Ronald Hanson

All Publications

• Measurement of hydrogen and nitrogen via collision-induced infrared absorption INTERNATIONAL JOURNAL OF HYDROGEN ENERGY Wei, C., Klingberg, A., Strand, C. L., Hanson, R. K. 2024; 93: 364-373

  View details for DOI 10.1016/j.ijhydene.2024.10.318

  View details for Web of Science ID 001350370000001

• Collisional broadening and pressure shift coefficients for the potassium D1 and D2 transitions in oxygen and carbon dioxide at high temperatures JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Vandervort, J. A., Kotsarinis, K., Barnes, S. C., Strand, C. L., Hanson, R. K. 2024; 328

  View details for DOI 10.1016/j.jqsrt.2024.109152

  View details for Web of Science ID 001299285700001

• New insights into the effect of molecular structure on stable intermediate formation during the pyrolysis of normal and branched alkanes - II: Impact of carbon number and degree of branching FUEL Boddapati, V., Biswas, P., Panda, A., Klingberg, A. R., Hanson, R. K. 2024; 373

  View details for DOI 10.1016/j.fuel.2024.132310

  View details for Web of Science ID 001260318500001

• New insights into the effect of molecular structure on stable intermediate formation during the pyrolysis of normal and branched alkanes - I: Multi-species time history measurements FUEL Boddapati, V., Biswas, P., Panda, A., Klingberg, A. R., Hanson, R. K. 2024; 373

  View details for DOI 10.1016/j.fuel.2024.132309

  View details for Web of Science ID 001260746500001

• Effect of elevated temperatures (550-860 K) on the laminar flame speeds of methane/hydrogen blends FUEL Figueroa-Labastida, M., Zheng, L., Streicher, J. W., Hanson, R. K. 2024; 372

  View details for DOI 10.1016/j.fuel.2024.132219

  View details for Web of Science ID 001254735300001

• Shock-Layer Measurements in T5 Shock Tunnel Hypersonic Flows Around a Cylinder Model AIAA JOURNAL Finch, P. M., Girard, J. J., Schwartz, T., Strand, C. L., Hanson, R. K., Yu, W. M., Austin, J. M., Hornung, H. G., Gross, T., Schwartzentruber, T. E. 2024

  View details for DOI 10.2514/1.J063877

  View details for Web of Science ID 001296258800001

• Experimental temperature- and pressure-dependent absorbance cross sections and a pseudo-line-list model for methyl formate near 5.7 . 7 μm JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Su, W., Ding, Y., Strand, C. L., Hanson, R. K. 2024; 327

  View details for DOI 10.1016/j.jqsrt.2024.109128

  View details for Web of Science ID 001293622800001

• Experimental measurements of<i> n</i>-heptane flame speeds behind reflected shock waves with variable extents of pre-flame auto-ignition chemistry COMBUSTION AND FLAME Zheng, L., Figueroa-Labastida, M., Streicher, J. W., Ferris, A. M., Hanson, R. K. 2024; 266

  View details for DOI 10.1016/j.combustflame.2024.113539

  View details for Web of Science ID 001325858900001

• A laser diagnostic for lineshape-based gas temperature and pressure measurements targeting a single atomic potassium absorption transition APPLIED PHYSICS B-LASERS AND OPTICS Vandervort, J. A., Schwartz, T., Barnes, S. C., Strand, C. L., Hanson, R. K. 2024; 130 (7)

  View details for DOI 10.1007/s00340-024-08252-7

  View details for Web of Science ID 001242906600001

• Ammonia/hydrogen laminar flame speed measurements at elevated temperatures INTERNATIONAL JOURNAL OF HYDROGEN ENERGY Figueroa-Labastida, M., Zheng, L., Streicher, J. W., Hanson, R. K. 2024; 63: 1137-1146

  View details for DOI 10.1016/j.ijhydene.2024.03.255

  View details for Web of Science ID 001285933700001

• Experimental and numerical investigation of shock wave-based methane pyrolysis for clean H₂ production SHOCK WAVES Ferris, A. M., Biswas, P., Choudhary, R., Hanson, R. K. 2024

  View details for DOI 10.1007/s00193-024-01159-4

  View details for Web of Science ID 001175260300001

• High-temperature laminar flame speed measurements of ammonia/ methane blends behind reflected shock waves COMBUSTION AND FLAME Figueroa-Labastida, M., Zheng, L., Streicher, J. W., Hanson, R. K. 2024; 261

  View details for DOI 10.1016/j.combustflame.2024.113314

  View details for Web of Science ID 001166346500001

• Measurements of methane laminar flame speeds at temperatures up to 1320 K COMBUSTION AND FLAME Figueroa-Labastida, M., Zheng, L., Streicher, J. W., Hanson, R. K. 2024; 261

  View details for DOI 10.1016/j.combustflame.2024.113312

  View details for Web of Science ID 001325824900001

• Shock-tube laminar flame speed measurements of ammonia/airgon mixtures at temperatures up to 771K COMBUSTION AND FLAME Figueroa-Labastida, M., Zheng, L., Ferris, A. M., Obrecht, N., Callu, C., Hanson, R. K. 2024; 260

  View details for DOI 10.1016/j.combustflame.2023.113256

  View details for Web of Science ID 001136587800001

• Development of a vapor-based method for seeding alkali metals in shock tube facilities SHOCK WAVES Vandervort, J. A., Barnes, S. C., Strand, C. L., Hanson, R. K. 2024; 34 (1): 61-67

  View details for DOI 10.1007/s00193-024-01165-6

  View details for Web of Science ID 001207728800004

• Predicting the physical and chemical properties of sustainable aviation fuels using elastic-net-regularized linear models based on extended-wavelength FTIR spectra FUEL Boddapati, V., Ferris, A. M., Hanson, R. K. 2024; 356

  View details for DOI 10.1016/j.fuel.2023.129557

  View details for Web of Science ID 001063638700001

• Measurements and a new correlation of methanol laminar flame speeds at temperatures up to 916 K and elevated pressures behind reflected shock waves PROCEEDINGS OF THE COMBUSTION INSTITUTE Zheng, L., Figueroa-Labastida, M., Streicher, J., Hanson, R. K. 2024; 40 (1-4)

  View details for DOI 10.1016/j.proci.2024.105192

  View details for Web of Science ID 001260451000001

• Simultaneous OH and OH* measurements during NH₃ oxidation in a shock tube PROCEEDINGS OF THE COMBUSTION INSTITUTE Clees, S., Rault, T. M., Zaczek, L. T., Hanson, R. K. 2024; 40 (1-4)

  View details for DOI 10.1016/j.proci.2024.105286

  View details for Web of Science ID 001258875400001

• Towards characterizing the effect of sustainable gasoline additives on the low-T reactivity of n-heptane using CO speciation in a shock tube PROCEEDINGS OF THE COMBUSTION INSTITUTE Biswas, P., Boddapati, V., Hanson, R. K. 2024; 40 (1-4)

  View details for DOI 10.1016/j.proci.2024.105484

  View details for Web of Science ID 001270258200001

• Understanding the impact of molecular structure on the formation of stable intermediates during the pyrolysis of monoalkylated cyclohexanes in a shock tube PROCEEDINGS OF THE COMBUSTION INSTITUTE Boddapati, V., Biswas, P., Panda, A., Klingberg, A. R., Hanson, R. K. 2024; 40 (1-4)

  View details for DOI 10.1016/j.proci.2024.105202

  View details for Web of Science ID 001253272200001

• Fiber-coupled optical probe for laser absorption diagnostics in shock tube experiments with high concentrations of non-monatomic species PROCEEDINGS OF THE COMBUSTION INSTITUTE Wei, C., Knubben, J. C., Strand, C. L., Hanson, R. K. 2024; 40 (1-4)

  View details for DOI 10.1016/j.proci.2024.105483

  View details for Web of Science ID 001273551200001

• Multi-speciation and ignition delay time measurements of ammonia oxidation behind reflected shock waves COMBUSTION AND FLAME Rault, T. M., Clees, S., Figueroa-Labastida, M., Barnes, S. C., Ferris, A. M., Obrecht, N., Callu, C., Hanson, R. K. 2024; 260

  View details for DOI 10.1016/j.combustflame.2023.113260

  View details for Web of Science ID 001147344300001

• Spectroscopic modeling and measurements of the CN Violet and Red systems for the development of nonequilibrium temperature and speciation diagnostics JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Krish, A., Finch, P. M., Merrell, D. P., Streicher, J. W., Hanson, R. K. 2023; 311

  View details for DOI 10.1016/j.jqsrt.2023.108772

  View details for Web of Science ID 001082226500001

• Laser Absorption Sensor Targeting Potassium for Hypersonic Velocity, Temperature, and Enthalpy Measurements AIAA JOURNAL Schwartz, T., Finch, P. M., Strand, C. L., Hanson, R. K., Luo, Y., Yu, W. M., Austin, J. M., Hornung, H. G. 2023

  View details for DOI 10.2514/1.J062620

  View details for Web of Science ID 001003665400001

• On the use of extended-wavelength FTIR spectra for the prediction of combustion properties of jet fuels and their constituent species PROCEEDINGS OF THE COMBUSTION INSTITUTE Boddapati, V., Ferris, A. M., Hanson, R. K. 2023; 39 (1): 1347-1355

  View details for DOI 10.1016/j.proci.2022.08.041

  View details for Web of Science ID 001021526000001

• Measurements of propane-O 2-Ar laminar flame speeds at temperatures exceeding 1000 K in a shock tube PROCEEDINGS OF THE COMBUSTION INSTITUTE Susa, A. J., Zheng, L., Hanson, R. K. 2023; 39 (2): 1793-1802

  View details for DOI 10.1016/j.proci.2022.07.191

  View details for Web of Science ID 001017295900001

• Simultaneous side-wall-schlieren and -emission imaging of autoignition phenomena in conventional and constrained-reaction-volume shock-tube experiments PROCEEDINGS OF THE COMBUSTION INSTITUTE Susa, A. J., Hanson, R. K. 2023; 39 (1): 1377-1386

  View details for DOI 10.1016/j.proci.2022.08.063

  View details for Web of Science ID 001016839400001

• Shock tube/laser absorption measurement of the rate constant of the reaction: H 2 O 2+CO 2 2OH+CO 2 PROCEEDINGS OF THE COMBUSTION INSTITUTE Shao, J., Choudhary, R., Davidson, D. F., Hanson, R. K. 2023; 39 (1): 735-743

  View details for DOI 10.1016/j.proci.2022.08.021

  View details for Web of Science ID 001017333600001

• Two-dimensional simulation of cool and double flame formation induced by the laser ignition under shock-tube conditions PROCEEDINGS OF THE COMBUSTION INSTITUTE Zhang, T., Susa, A. J., Hanson, R. K., Ju, Y. 2023; 39 (2): 2017-2025

  View details for DOI 10.1016/j.proci.2022.08.068

  View details for Web of Science ID 001019624300001

• Laser absorption study of the N-2 + O -> NO plus N and NO plus O -> O-2 + N Zeldovich reactions in shock-heated N2O mixtures PHYSICS OF FLUIDS Streicher, J. W., Krish, A., Hanson, R. K. 2023; 35 (4)

  View details for DOI 10.1063/5.0147764

  View details for Web of Science ID 001003916300002

• Atmospheric-pressure shock-tube measurements of high-temperature propane laminar flame speed across multiple equivalence ratios COMBUSTION AND FLAME Zheng, L., Nygaard, Z., Figueroa-Labastida, M., Susa, A. J., Ferris, A. M., Hanson, R. K. 2023; 251

  View details for DOI 10.1016/j.combustflame.2023.112726

  View details for Web of Science ID 000962386900001

• Low-temperature oxidation of n-octane and n-decane in shock tubes: Differences in time histories of key intermediates COMBUSTION AND FLAME Choudhary, R., Clees, S., Boddapati, V., Shao, J., Davidson, D. F., Hanson, R. K. 2023; 251

  View details for DOI 10.1016/j.combustflame.2023.112670

  View details for Web of Science ID 000955844400001

• NOx formation from ammonia, and its effects on oxy-combustion of hydrocarbon fuels under supercritical-CO2 conditions APPLICATIONS IN ENERGY AND COMBUSTION SCIENCE Gokulakrishnan, P., Shao, J., Klassen, M. S., Davidson, D. F., Hanson, R. K. 2023; 13

  View details for DOI 10.1016/j.jaecs.2022.100110

  View details for Web of Science ID 001044627300001

• Multiwavelength Speciation in Pyrolysis of n-Pentane and Experimental Determination of the Rate Coefficient of nC5H12 = nC3H7 + C2H5 in a Shock Tube. The journal of physical chemistry. A Biswas, P., Choudhary, R., Hanson, R. K. 2023

  Abstract

  We report the application of a multiwavelength speciation strategy to the study of n-pentane (nC5H12) pyrolysis behind reflected shock waves in a shock tube. Experiments were conducted with 2% nC5H12/0.8%CO2/Ar (by mole) between 1150 and 1520 K in the pressure range of 1-2 atm. Utilization of laser absorption spectroscopy at eight wavelengths allowed time-resolved measurements of n-pentane, ethylene, methane, heavy alkenes, and temperature. The measured time histories were compared against the predictions of four recently developed chemical kinetic models for heavy hydrocarbons. It was found that none of the models reconciled the measured species time histories simultaneously. Sensitivity analysis was conducted to identify key reactions influencing the evolution of ethylene and other major pyrolysis products. The analysis revealed that the unimolecular decomposition of n-pentane into n-propyl and ethyl radicals has a dominating influence over the evolution of ethylene in the temperature range of 1150-1450 K. The rate coefficient of this reaction was then adjusted to match the measured ethylene time histories for each experiment. The rate coefficients thus determined, were fit against temperature using an Arrhenius expression given by k1(T) = 3.5 × 1014 exp(-67.2 kcal/RT) s-1. The average overall 2σ uncertainty of the measured rate coefficient was found to be ±35%, resulting primarily from uncertainties in the rate coefficients of secondary reactions. The measured rate coefficient, when used with the models, leads to a significant improvement in the prediction of species time histories. Further improvements in the model are possible if the rate coefficients of relevant reactions pertaining to small hydrocarbon chemistry are determined with an improved accuracy, and less uncertainty. To the best knowledge of the authors, this is the first experimental determination of the rate coefficient of C5H12 → nC3H7 + C2H5.

  View details for DOI 10.1021/acs.jpca.2c07538

  View details for PubMedID 36852653

• Shock-Tube Measurements of Atomic Nitrogen Collisional Excitation in 8000-12000 K Partially Ionized Nitrogen-Argon Mixtures. The journal of physical chemistry. A Finch, P. M., Granowitz, Z. N., Streicher, J. W., Krish, A., Strand, C. L., Hanson, R. K. 2023

  Abstract

  We report on shock-tube experiments measuring the collisional excitation of atomic nitrogen using tunable diode laser absorption spectroscopy (TDLAS). Conditions behind the reflected shocks ranged from 8000 to 12000 K and 0.1 to 1.1 atm in mixtures of 1 or 2% molecular nitrogen (N2) in argon (Ar). Absorption from the transition between atomic nitrogen quantum states 4P to 4D at 868 nm was used to monitor the formation of electronically excited nitrogen. Population measurements of the 4P state were made at a rate of 50 kHz. In connection with these measurements, a multitemperature kinetic mechanism is proposed for nitrogen excitation. Measurements suggest a multistage process. In early test times, a period of induction due to N2 dissociation is followed by a rise via heavy particle excitation. The dominant channel causing this excitation is believed to be N + N N(4P) + N with a measured forward rate constant of 3.65 * 10-18 exp(-119892/T) [m3/s]. As test time evolves, the excitation of 4P, referred to as N*, is subsequently interrupted and then resumes, as the kinetic environment becomes increasingly electron-dominated. The most impactful reactions of the mechanism are optimized to reduce the residual between simulations and the measurements. The measured N* populations indicate strong, though indirect, sensitivity to adjacent processes, including the excitation of metastable nitrogen, and ionization channels.

  View details for DOI 10.1021/acs.jpca.2c07839

  View details for PubMedID 36745871

• Measurements of T5 Shock Tunnel Freestream Temperature, Velocity, and Composition AIAA JOURNAL Finch, P. M., Girard, J. J., Schwartz, T., Strand, C. L., Hanson, R. K., Yu, W. M., Austin, J. M., Hornung, H. G. 2023

  View details for DOI 10.2514/1.J062383

  View details for Web of Science ID 000924854700001

• Laminar flame speed measurements of ethanol, iso-octane, and their binary blends at temperatures up to 1020 K behind reflected shock waves FUEL Zheng, L., Figueroa-Labastida, M., Nygaard, Z., Ferris, A. M., Hanson, R. K. 2023; 356

  View details for DOI 10.1016/j.fuel.2023.129495

  View details for Web of Science ID 001062259200001

• Using shock tube species time-histories in Bayesian parameter estimation: Effective independent-data number and target selection PROCEEDINGS OF THE COMBUSTION INSTITUTE Chen, H., Ji, W., Cassady, S. J., Ferris, A. M., Hanson, R. K., Deng, S. 2023; 39 (4): 5299-5308

  View details for DOI 10.1016/j.proci.2022.08.118

  View details for Web of Science ID 001018617600001

• Shock tube and multi-species laser absorption measurements of rate constants for methanol pyrolysis PROCEEDINGS OF THE COMBUSTION INSTITUTE Wang, S., Ding, Y., Miao, J., Hanson, R. K. 2023; 39 (1): 755-763

  View details for DOI 10.1016/j.proci.2022.08.062

  View details for Web of Science ID 001019037800001

• A laser-absorption sensor for in situ detection of biofuel blend vapor in engine intakes PROCEEDINGS OF THE COMBUSTION INSTITUTE Clees, S., Cha, D. H., Biswas, P., Boddapati, V., Cassady, S. J., Strand, C. L., Hanson, R. K., French, B., Gilmour, A., Hawk, K. C., Stitt, J. M., Ferlet, X. 2023; 39 (1): 1307-1316

  View details for DOI 10.1016/j.proci.2022.07.110

  View details for Web of Science ID 001019044900001

• Application of Reflected Shock Wave Configuration to Validate Nonequilibrium Models of Reacting Air JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER Gimelshein, S. F., Streicher, J. W., Krish, A., Hanson, R. K., Wysong, I. J. 2022

  View details for DOI 10.2514/1.T6630

  View details for Web of Science ID 000891162900001

• Logistic-Regression-Based Meta-Analysis of Factors Affecting Flame Stability in a Shock Tube COMBUSTION SCIENCE AND TECHNOLOGY Susa, A. J., Ferris, A. M., Zheng, L., Hanson, R. K. 2022

  View details for DOI 10.1080/00102202.2022.2142046

  View details for Web of Science ID 000882871400001

• High-temperature vibrational relaxation and decomposition of shock-heated nitric oxide. I. Argon dilution from 2200 to 8700 K PHYSICS OF FLUIDS Streicher, J. W., Krish, A., Hanson, R. K. 2022; 34 (11)

  View details for DOI 10.1063/5.0109109

  View details for Web of Science ID 000882457400018

• Line mixing study of carbon monoxide near 4.7 mu m broadened by nitrogen, helium, and hydrogen JOURNAL OF MOLECULAR SPECTROSCOPY Su, W., Ding, Y., Strand, C. L., Hanson, R. K. 2022; 390

  View details for DOI 10.1016/j.jms.2022.111699

  View details for Web of Science ID 000904449500001

• A mid-IR laser absorption diagnostic for measuring formaldehyde at high pressures and its demonstration in shock tubes COMBUSTION AND FLAME Biswas, P., Choudhary, R., Panda, A., Davidson, D. F., Hanson, R. K. 2022; 245

  View details for DOI 10.1016/j.combustflame.2022.112366

  View details for Web of Science ID 000862966000011

• High-temperature vibrational relaxation and decomposition of shock-heated nitric oxide: II. Nitrogen dilution from 1900 to 8200 K PHYSICS OF FLUIDS Streicher, J. W., Krish, A., Hanson, R. K. 2022; 34 (11)

  View details for DOI 10.1063/5.0122787

  View details for Web of Science ID 000882457400010

• Shock Tube/Laser Absorption Measurements of Cyclopentadiene Pyrolysis. The journal of physical chemistry. A Johnson, S. E., Davidson, D. F., Hanson, R. K. 2022

  Abstract

  High-temperature cyclopentadiene pyrolysis was examined behind reflected shock waves in a heated shock tube using several laser absorption diagnostic schemes. A two-color, online-offline sensor near 3335 cm-1 was used to measure time histories of acetylene, while a three-color scheme of diagnostics at 10.532, 10.675, and 11.345 mum yielded measurements of cyclopentadiene and ethylene. Species time histories of cyclopentadiene decomposition and acetylene formation as well as ethylene yields are reported from 1319 to 1678 K at 1.2-1.5 atm. In addition, the overall decomposition rate of cyclopentadiene is reported, and comparisons are made to a number of kinetic models.

  View details for DOI 10.1021/acs.jpca.2c04381

  View details for PubMedID 35853207

• Collisional broadening and pressure shift of the potassium resonance doublets by nitrogen, helium, and hydrogen at high temperatures JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Ding, Y., Vandervort, J. A., Freedman, R. S., Strand, C. L., Marley, M. S., Hanson, R. K. 2022; 283

  View details for DOI 10.1016/j.jqsrt.2022.108149

  View details for Web of Science ID 000792886800015

• Methodology of designing compact schlieren systems using off-axis parabolic mirrors APPLIED OPTICS Zheng, L., Susa, A. J., Hanson, R. K. 2022; 61 (16): 4857-4864

  View details for DOI 10.1364/AO.457151

  View details for Web of Science ID 000808000800030

• Spectrally-resolved ultraviolet absorption measurements of shock-heated NO from 2000 K to 6000 K for the development of a two-color rotational temperature diagnostic JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Krish, A., Streicher, J. W., Hanson, R. K. 2022; 280

  View details for DOI 10.1016/j.jqsrt.2022.108073

  View details for Web of Science ID 000748572500001

• Shock tube/laser absorption measurements of the isomerization rates of allene and propyne COMBUSTION AND FLAME Johnson, S. E., Ding, Y., Davidson, D. F., Hanson, R. K. 2022; 238

  View details for DOI 10.1016/j.combustflame.2021.111962

  View details for Web of Science ID 000745063300002

• Distortion of expanding n-heptane flames at high unburned-gas temperatures behind reflected shocks COMBUSTION AND FLAME Susa, A. J., Hanson, R. K. 2022; 237

  View details for DOI 10.1016/j.combustflame.2021.111842

  View details for Web of Science ID 000719303400003

• Investigating Arcjet Mixing and Enthalpy Loss Using Atomic Oxygen Laser Absorption Spectroscopy AIAA JOURNAL Salazar, D., Strand, C. L., Hanson, R. K., MacDonald, M. E. 2022; 60 (2): 976-984

  View details for DOI 10.2514/1.J060274

  View details for Web of Science ID 000802220400034

• Line mixing study on the fundamental rovibrational band of nitric oxide near 5.3 mu m JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Su, W., Boulet, C., Almodovar, C. A., Ding, Y., Strand, C. L., Hanson, R. K. 2022; 278

  View details for DOI 10.1016/j.jqsrt.2021.107997

  View details for Web of Science ID 000748572100014

• Flame image velocimetry: seedless characterization of post-reflected-shock velocities in a shock-tube EXPERIMENTS IN FLUIDS Susa, A. J., Hanson, R. K. 2022; 63 (1)

  View details for DOI 10.1007/s00348-022-03388-8

  View details for Web of Science ID 000749223700001

• Measurements of Reflected Shock Tunnel Freestream Nitric Oxide Temperatures and Partial Pressure AIAA JOURNAL Girard, J. J., Finch, P. M., Strand, C. L., Hanson, R. K., Yu, W. M., Austin, J. M., Hornung, H. G. 2021; 59 (12): 5266-5275

  View details for DOI 10.2514/1.J060596

  View details for Web of Science ID 000800025200032

• Thermometry and speciation for high-temperature and -pressure methane pyrolysis using shock tubes and dual-comb spectroscopy MEASUREMENT SCIENCE AND TECHNOLOGY Pinkowski, N. H., Biswas, P., Shao, J., Strand, C. L., Hanson, R. K. 2021; 32 (12)

  View details for DOI 10.1088/1361-6501/ac22ef

  View details for Web of Science ID 000702061800001

• Line mixing in the nitric oxide R-branch near 5.2 mu m at high pressures and temperatures: Measurements and empirical modeling using energy gap fitting JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Almodovar, C. A., Su, W., Choudhary, R., Shao, J., Strand, C. L., Hanson, R. K. 2021; 276

  View details for DOI 10.1016/j.jqsrt.2021.107935

  View details for Web of Science ID 000709765300010

• Shock tube measurements of high-temperature argon broadening and shift parameters for the potassium D1 and D2 resonance transitions JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Ding, Y., Vandervort, J. A., Strand, C. L., Hanson, R. K. 2021; 275

  View details for DOI 10.1016/j.jqsrt.2021.107895

  View details for Web of Science ID 000704000000003

• Shock tube study of ethanol pyrolysis I: Multi-species time-history measurements COMBUSTION AND FLAME Choudhary, R., Boddapati, V., Clees, S., Girard, J. J., Peng, Y., Shao, J., Davidson, D. F., Hanson, R. K. 2021; 233

  View details for DOI 10.1016/j.combustflame.2021.111553

  View details for Web of Science ID 000718900500003

• Shock tube study of ethanol pyrolysis II: Rate constant measurements and modeling COMBUSTION AND FLAME Choudhary, R., Boddapati, V., Clees, S., Girard, J. J., Peng, Y., Shao, J., Davidson, D. F., Hanson, R. K. 2021; 233

  View details for DOI 10.1016/j.combustflame.2021.111554

  View details for Web of Science ID 000718900500002

• Spectrally-resolved absorption cross-section measurements of shock-heated O-2 for the development of a vibrational temperature diagnostic JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Krish, A., Streicher, J. W., Hanson, R. K. 2021; 270

  View details for DOI 10.1016/j.jqsrt.2021.107704

  View details for Web of Science ID 000670398200011

• Experimental and modeling of autoignition of gaseous hydrocarbon fuels in the presence of H2 and C2H4 FUEL Gokulakrishnan, P., Fuller, C., Klassen, M., Davidson, D., Hanson, R. 2021; 296

  View details for DOI 10.1016/j.fuel.2021.120713

  View details for Web of Science ID 000640935700003

• Collisional excitation kinetics for O(3s S-5(o)) and O(3p P-5(3)) states using laser absorption spectroscopy in shock-heated weakly ionized O-2-Ar mixture PHYSICAL REVIEW E Li, Y., Wang, Y., Davidson, D. F., Hanson, R. K. 2021; 103 (6)

  View details for DOI 10.1103/PhysRevE.103.063211

  View details for Web of Science ID 000664534100019

• Collisional excitation kinetics for O(3s^{5}S^{o}) and O(3p^{5}P_{3}) states using laser absorption spectroscopy in shock-heated weakly ionized O_{2}-Ar mixture. Physical review. E Li, Y., Wang, Y., Davidson, D. F., Hanson, R. K. 2021; 103 (6-1): 063211

  Abstract

  Collisional excitation kinetics for atomic oxygen is studied behind reflected shock waves in 1%O_{2}/Ar mixtures over 10 000-11 000K using laser absorption spectroscopy of the O(3s^{5}S^{o}) to O(3p^{5}P_{3}) transition at 777 nm and the O(3p^{5}P_{3}) to O(3d ^{5}D_{2,3,4}^{o}) transitions at 926 nm. Four time histories are inferred simultaneously from the absorbance of the two transitions: the population density of level 4 of atomic oxygen, i.e., the O(3s ^{5}S^{o}) state, n_{4}; the population density of level 6 of atomic oxygen, i.e., the O(3p^{5}P_{3}) state, n_{6}; the electron number density, n_{e}; and the heavy-particle translational temperature, T_{tr}. Atomic oxygen in the levels 4 and 6 are not in equilibrium with the ground-state atomic oxygen as the measurements of n_{4} and n_{6} are generally 3-20 times smaller than the corresponding values under Boltzmann equilibrium at T_{tr}. However, these two states are close to partial equilibrium with each other within the test time, indicating strong heavy-particle cross coupling between levels 4 and 6 of atomic oxygen. A simplified two-temperature collisional-radiative (CR) model is developed to study the thermal and chemical nonequilibrium of atomic oxygen following shock heating. The four measured time histories are used to optimize the 12 collisional rate constants in the CR model using a stochastic gradient descent (SGD) algorithm. The time-history results, diagnostic methods, and collisional-radiative model presented in the current study are potentially useful in studies of high-enthalpy air, plasma processing, or other applications involving weakly ionized oxygen.

  View details for DOI 10.1103/PhysRevE.103.063211

  View details for PubMedID 34271738

• Coupled vibration-dissociation time-histories and rate measurements in shock-heated, nondilute O-2 and O-2-Ar mixtures from 6000 to 14000K PHYSICS OF FLUIDS Streicher, J. W., Krish, A., Hanson, R. K. 2021; 33 (5)

  View details for DOI 10.1063/5.0048059

  View details for Web of Science ID 000677502500006

• Quantum-cascade-laser-based dual-comb thermometry and speciation at high temperatures MEASUREMENT SCIENCE AND TECHNOLOGY Pinkowski, N. H., Cassady, S. J., Strand, C. L., Hanson, R. K. 2021; 32 (3)

  View details for DOI 10.1088/1361-6501/abc029

  View details for Web of Science ID 000621888000001

• Development of a Stark shift measurement technique using excited-state oxygen atoms to determine electron number density in shock heated O-2/Ar above 10 000 K PLASMA SOURCES SCIENCE & TECHNOLOGY Li, Y., Wang, S., Strand, C. L., Hanson, R. K. 2021; 30 (2)

  View details for DOI 10.1088/1361-6595/abdd12

  View details for Web of Science ID 000625362300001

• High-speed imaging of n-heptane ignition in a high-pressure shock tube PROCEEDINGS OF THE COMBUSTION INSTITUTE Shao, J., Choudhary, R., Susa, A. J., Davidson, D. F., Hanson, R. K. 2021; 38 (1): 911-918

  View details for DOI 10.1016/j.proci.2020.06.158

  View details for Web of Science ID 000668626900021

• Studies of the dynamics of autoignition assisted outwardly propagating spherical cool and double flames under shock-tube conditions PROCEEDINGS OF THE COMBUSTION INSTITUTE Zhang, T., Susa, A. J., Hanson, R. K., Ju, Y. 2021; 38 (2): 2275-2283

  View details for DOI 10.1016/j.proci.2020.06.089

  View details for Web of Science ID 000651833400015

• An In Situ Laser-Absorption Sensor for Crank Angle-Resolved Temperature, Pressure, and Humidity in Intake-Runner Flows SAE INTERNATIONAL JOURNAL OF ENGINES Cassady, S. J., Cha, D. H., Pinkowski, N. H., Strand, C. L., Hanson, R. K., Ferlet, X., French, B., Mernone, B. J., Gilmour, A., Stitt, J. M. 2021; 14 (4): 551-568

  View details for DOI 10.4271/03-14-04-0034

  View details for Web of Science ID 000739430500007

• Time-resolved, single-ended laser absorption thermometry and H2O, CO2, and CO speciation in a H-2/C2H4-fueled rotating detonation engine PROCEEDINGS OF THE COMBUSTION INSTITUTE Cassady, S. J., Peng, W., Strand, C. L., Dausen, D. F., Codoni, J. R., Brophy, C. M., Hanson, R. K. 2021; 38 (1): 1719-1727

  View details for DOI 10.1016/j.proci.2020.06.125

  View details for Web of Science ID 000668887400018

• Measurement of time histories of stable intermediates during first stage ignition of n-heptane and its two isomers in a shock tube PROCEEDINGS OF THE COMBUSTION INSTITUTE Choudhary, R., Girard, J. J., Clees, S., Johnson, S. E., Shao, J., Davidson, D. F., Hanson, R. K., Aradi, A. A. 2021; 38 (1): 957-965

  View details for DOI 10.1016/j.proci.2020.06.296

  View details for Web of Science ID 000668626900026

• Thermal-pyrolysis induced over-driven flame and its potential role in the negative-temperature dependence of iso-octane flame speed at elevated temperatures COMBUSTION AND FLAME Yang, Q., Chen, Z., Susa, A. J., Hanson, R. K., Zhao, P. 2021; 223: 65–76

  View details for DOI 10.1016/j.combustflame.2020.09.027

  View details for Web of Science ID 000599715300006

• Temperature-dependent absorption cross section measurements for propene, 1-butene, cis-/trans-2-butene, isobutene and 1,3-butadiene in the spectral region 8.4-11.7 mu m JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Ding, Y., Su, W., Johnson, S. E., Strand, C. L., Hanson, R. K. 2020; 255

  View details for DOI 10.1016/j.jqsrt.2020.107240

  View details for Web of Science ID 000581971300017

• Shock-induced ignition and pyrolysis of high-pressure methane and natural gas mixtures COMBUSTION AND FLAME Shao, J., Ferris, A. M., Choudhary, R., Cassady, S. J., Davidson, D. F., Hanson, R. K. 2020; 221: 364–70

  View details for DOI 10.1016/j.combustflame.2020.08.010

  View details for Web of Science ID 000577974300035

• A physics-based approach to modeling real-fuel combustion chemistry - VI. Predictive kinetic models of gasoline fuels COMBUSTION AND FLAME Xu, R., Saggese, C., Lawson, R., Movaghar, A., Parise, T., Shao, J., Choudhary, R., Park, J., Lu, T., Hanson, R. K., Davidson, D. F., Egolfopoulos, F. N., Aradi, A., Prakash, A., Mohan, V., Cracknell, R., Wang, H. 2020; 220: 475–87

  View details for DOI 10.1016/j.combustflame.2020.07.020

  View details for Web of Science ID 000571428300009

• Vibrational relaxation time measurements in shock-heated oxygen and air from 2000 K to 9000 K using ultraviolet laser absorption PHYSICS OF FLUIDS Streicher, J. W., Krish, A., Hanson, R. K. 2020; 32 (8)

  View details for DOI 10.1063/5.0015890

  View details for Web of Science ID 000559819800001

• Shock-tube measurements of coupled vibration-dissociation time-histories and rate parameters in oxygen and argon mixtures from 5000 K to 10 000 K PHYSICS OF FLUIDS Streicher, J. W., Krish, A., Hanson, R. K., Hanquist, K. M., Chaudhry, R. S., Boyd, I. D. 2020; 32 (7)

  View details for DOI 10.1063/5.0012426

  View details for Web of Science ID 000547489500002

• The pyrolysis of propane INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Cassady, S. J., Choudhary, R., Boddapati, V., Pinkowski, N. H., Davidson, D. F., Hanson, R. K. 2020

  View details for DOI 10.1002/kin.21395

  View details for Web of Science ID 000540365200001

• Spectroscopic inference of alkane, alkene, and aromatic formation during high-temperature JP8, JP5, and Jet-A pyrolysis FUEL Pinkowski, N. H., Cassady, S. J., Davidson, D. F., Hanson, R. K. 2020; 269

  View details for DOI 10.1016/j.fuel.2020.117420

  View details for Web of Science ID 000520021800056

• Quantitative measurements of broad-band mid-infrared absorption spectra of formaldehyde, acetaldehyde, and acetone at combustion-relevant temperatures near 5.7 mu m JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Ding, Y., Peng, W. Y., Strand, C. L., Hanson, R. K. 2020; 248

  View details for DOI 10.1016/j.jqsrt.2020.106981

  View details for Web of Science ID 000539158500008

• Shock tube/laser absorption measurements of the pyrolysis of JP-10 fuel COMBUSTION AND FLAME Johnson, S. E., Davidson, D. F., Hanson, R. K. 2020; 216: 161–73

  View details for DOI 10.1016/j.combustflame.2019.11.026

  View details for Web of Science ID 000533624800016

• Ultraviolet absorption cross-section measurements of shock-heated O-2 from 2,000-8,400 K using a tunable laser JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Krish, A., Streicher, J. W., Hanson, R. K. 2020; 247

  View details for DOI 10.1016/j.jqsrt.2020.106959

  View details for Web of Science ID 000536179300015

• Two-color frequency-multiplexed IMS technique for gas thermometry at elevated pressures APPLIED PHYSICS B-LASERS AND OPTICS Wei, W., Peng, W., Wang, Y., Shao, J., Strand, C. L., Hanson, R. K. 2020; 126 (3)

  View details for DOI 10.1007/s00340-020-7396-4

  View details for Web of Science ID 000519937700002

• Collisional broadening and shift of five OH A(2)Sigma(+)<- X-2 Pi (0-0) transitions in the Q(1)-branch, by H2O, O-2, CO2, N-2 and Ar, at 1220K JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Girard, J. J., Clees, S., Hanson, R. K. 2020; 240

  View details for DOI 10.1016/j.jqsrt.2019.106681

  View details for Web of Science ID 000502881000004

• Two-temperature Collisional-radiative Modeling of Partially Ionized O2-Ar Mixtures over 8000-10,000 K Behind Reflected Shock Waves. The journal of physical chemistry. A Li, Y. n., Wang, S. n., Strand, C. L., Hanson, R. K. 2020

  Abstract

  The collisional excitation kinetics of atomic oxygen was studied behind reflected shock waves using tunable diode laser absorption spectroscopy. A test gas mixture of 1% O2/Ar was shock-heated to temperatures between 8000 and 10,000 K and pressures between 0.15 and 1 atm. The time evolution of the atomic oxygen population in the 3 s 5S0 state was monitored by laser absorption at 777.2 nm. The measured O(3 s 5S0) population revealed multistage behavior that was not observed in previous measurements over a temperature range of 5300-7200 K. To interpret the multistage behavior, a three-level collisional-radiative model for atomic oxygen excitation kinetics was developed. The model utilized two independent temperatures, that is, heavy particle translational temperature Ttr and electron translational temperature Te, to describe the fundamental rate constants of atomic oxygen excitation because of collisions with heavy particles and electrons, respectively. The heavy particle excitation rate was inferred from the early stage of the measurement to be k(3P →5S0) = 3.4 × 10-27 (T/K)0.5(1.061 × 105 + 2 (T/K)) exp(-1.061 × 105 K/T) ± 50% m3 s-1. The electron impact excitation rate constant of oxygen, electron impact, and heavy particle impact ionization rate constants of Argon were modified in the model to match the experimental population time histories. The modified rate parameters are also reported for the temperature range explored in the current study.

  View details for DOI 10.1021/acs.jpca.0c00466

  View details for PubMedID 32306734

• A new strategy of characterizing hydrocarbon fuels using FTIR spectra and generalized linear model with grouped-Lasso regularization Fuel Wang, Y., Wei, W., Zhang, Y., Hanson, R. K. 2020: 119419

  View details for DOI 10.1016/j.fuel.2020.119419

• Determination of the JP10 + OH → Product Reaction Rate with Measured Fuel Concentrations in Shock Tube Experiments. The journal of physical chemistry. A Zaczek, L. T., Davidson, D. F., Hanson, R. K. 2020

  Abstract

  The overall reaction rate for JP10 + OH → products was measured directly via laser absorption of OH in shock tube experiments from 931 to 1308 K and 0.94 to 1.44 atm. The JP10 concentration of test gas mixtures was measured in the shock tube for several experiments using a 3.39 μm laser fuel diagnostic. The measured JP10 concentrations indicated fuel losses due to adsorption of 11-31% compared to values calculated manometrically from mixture preparation. OH was generated via rapid thermal decomposition of tert-butyl hydroperoxide behind reflected shock waves, and post-shock OH profiles were measured via laser absorption at 308.6 nm. The measured OH profiles were fit with a chemical kinetic model for JP10 chemistry to determine the overall JP10 + OH reaction rate. A recommendation is made for the JP10 + OH overall reaction rate over the temperature range explored in this study as k1 (931-1308 K) = 1.622 × 1014 exp(-1826/T [K]) ± 12%. To the authors' knowledge, these data are the first direct measurements of the overall reaction rate for JP10 + OH.

  View details for DOI 10.1021/acs.jpca.0c00065

  View details for PubMedID 32178517

• The Thermal Decomposition of Ethane Fuel Cassady, S. J., Choudhary, R., Pinkowski, N. H., Shao, J., Davidson, D. F., Hanson, R. K. 2020

  View details for DOI 10.1016/j.fuel.2020.117409

• Dual-comb Spectroscopy for High-temperature Reaction Kinetics Measurement Science and Technology Pinkowski, N. H., Ding, Y., Strand, C. L., Horvath, R., Geiser, M. 2020

  View details for DOI 10.1088/1361-6501/ab6ecc

• Analysis of laser absorption gas sensors employing scanned-wavelength modulation spectroscopy with 1f-phase detection APPLIED PHYSICS B-LASERS AND OPTICS Peng, W., Strand, C. L., Hanson, R. K. 2020; 126 (1)

  View details for DOI 10.1007/s00340-019-7369-7

  View details for Web of Science ID 000503696100001

• R-branch line intensities and temperature-dependent line broadening and shift coefficients of the nitric oxide fundamental rovibrational band JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Almodovar, C. A., Su, W., Strand, C. L., Hanson, R. K. 2019; 239

  View details for DOI 10.1016/j.jqsrt.2019.106612

  View details for Web of Science ID 000504780100002

• Tunable laser-based detection of benzene using spectrally narrow absorption features APPLIED PHYSICS B-LASERS AND OPTICS Sur, R., Ding, Y., Jackson, R. B., Hanson, R. K. 2019; 125 (11)

  View details for DOI 10.1007/s00340-019-7311-z

  View details for Web of Science ID 000488964100001

• Shock Tube Measurement of the CH3 + C2H6 CH4 + C2H5 Rate Constant. The journal of physical chemistry. A Shao, J., Wei, W., Choudhary, R., Davidson, D. F., Hanson, R. K. 2019

  Abstract

  The rate constant for the CH3 + C2H6 CH4 + C2H5 reaction was studied behind reflected shock waves at temperatures between 1369 and 1626 K and pressures from 8.6 to 47.4 atm in mixtures of methane, ethane, and argon. Ethylene time histories were measured using laser absorption of radiation from a carbon dioxide gas laser near 10.532 mum. The resulting rate constant data can be represented by the Arrhenius equation k (T) = 3.90 * 1013 exp(-16670 cal/mol/RT) cm3 mol-1 s-1. We believe this is the first study to extend experimental data for this rate constant to temperatures above 1400 K. The overall 2sigma uncertainty of the current data is +18%/-21% resulting primarily from uncertainties associated with the influence of secondary reactions and the fitting of rapidly changing species time histories at the higher temperatures.

  View details for DOI 10.1021/acs.jpca.9b07691

  View details for PubMedID 31557027

• Experimental Observation of Negative Temperature Dependence in iso-Octane Burning Velocities Susa, A. J., Ferris, A. M., Davidson, D. E., Hanson, R. K. AMER INST AERONAUTICS ASTRONAUTICS. 2019: 4476–81

  View details for DOI 10.2514/1.J058530

  View details for Web of Science ID 000493056400033

• Gravity-current-induced test gas stratification and its prevention in constrained reaction volume shock-tube experiments SHOCK WAVES Susa, A. J., Davidson, D. F., Hanson, R. K. 2019; 29 (7): 969–84

  View details for DOI 10.1007/s00193-019-00894-3

  View details for Web of Science ID 000482832300006

• High-temperature laminar flame speed measurements in a shock tube COMBUSTION AND FLAME Ferris, A. M., Susa, A. J., Davidson, D. F., Hanson, R. K. 2019; 205: 241–52

  View details for DOI 10.1016/j.combustflame.2019.04.007

  View details for Web of Science ID 000471742000023

• High-pressure, high-temperature optical cell for mid-infrared spectroscopy JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Almodovar, C. A., Su, W., Strand, C. L., Sur, R., Hanson, R. K. 2019; 231: 69–78

  View details for DOI 10.1016/j.jqsrt.2019.04.014

  View details for Web of Science ID 000469898100009

• Multi-wavelength speciation of high-temperature 1-butene pyrolysis FUEL Pinkowski, N. H., Cassady, S. J., Davidson, D. F., Hanson, R. K. 2019; 244: 269–81

  View details for DOI 10.1016/j.fuel.2019.01.154

  View details for Web of Science ID 000459434500027

• A shock tube study of n-heptane, iso-octane, n-dodecane and iso-octane/n-dodecane blends oxidation at elevated pressures and intermediate temperatures FUEL Shao, J., Choudhary, R., Peng, Y., Davidson, D. F., Hanson, R. K. 2019; 243: 541–53

  View details for DOI 10.1016/j.fuel.2019.01.152

  View details for Web of Science ID 000459431800059

• Measurement of the reaction rate of H + O-2 + M -> HO2 + M, for M=Ar, N-2, CO2, at high temperature with a sensitive OH absorption diagnostic COMBUSTION AND FLAME Choudhary, R., Girard, J. J., Peng, Y., Shao, J., Davidson, D. F., Hanson, R. K. 2019; 203: 265–78

  View details for DOI 10.1016/j.combustflame.2019.02.017

  View details for Web of Science ID 000464628700024

• A new method of estimating derived cetane number for hydrocarbon fuels FUEL Wang, Y., Cao, Y., Wei, W., Davidson, D. F., Hanson, R. K. 2019; 241: 319–26

  View details for DOI 10.1016/j.fuel.2018.12.027

  View details for Web of Science ID 000458760500032

• A two-wavelength ethylene-absorption temperature diagnostic MEASUREMENT SCIENCE AND TECHNOLOGY Cassady, S. J., Susa, A. J., Ferris, A. M., Strand, C. L., Hanson, R. K. 2019; 30 (3)

  View details for DOI 10.1088/1361-6501/ab02cf

  View details for Web of Science ID 000459139700001

• A multi-wavelength speciation framework for high-temperature hydrocarbon pyrolysis JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Pinkowski, N. H., Ding, Y., Johnson, S. E., Wang, Y., Parise, T. C., Davidson, D. F., Hanson, R. K. 2019; 225: 180–205

  View details for DOI 10.1016/j.jqsrt.2018.12.038

  View details for Web of Science ID 000460495100018

• High-temperature mid-infrared absorption spectra of methanol (CH3OH) and ethanol (C2H5OH) between 930 and 1170 cm(-1) JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Ding, Y., Strand, C. L., Hanson, R. K. 2019; 224: 396–402

  View details for DOI 10.1016/j.jqsrt.2018.11.034

  View details for Web of Science ID 000456754800044

• Quantitative 2-D OH thermometry using spectrally resolved planar laser-induced fluorescence OPTICS LETTERS Wang, S., Hanson, R. K. 2019; 44 (3): 578–81

  Abstract

  A novel method is presented for quantitative two-dimensional temperature measurement in combustion gases. This method, namely spectrally resolved planar laser-induced fluorescence thermometry, utilizes a high-power, wavelength-tunable and narrow-linewidth CW laser to access the spectral lineshapes of a key combustion intermediate, the hydroxyl radical (OH), and enables high-fidelity and calibration-free quantification of non-uniform temperature fields in complex reacting flows. Specifically, the R1(11)/R1(7) line pair of the OH A2Σ+-X2Π(0,0) rovibronic band was probed with laser radiation near 306.5 nm, and their fluorescence ratios were used to infer temperature. Preliminary demonstrations of this thermometry method were performed in a series of burner-stabilized CH4-air flames.

  View details for DOI 10.1364/OL.44.000578

  View details for Web of Science ID 000457292400029

  View details for PubMedID 30702683

• Shock Tube Measurement of the C2H4 + H double left right arrow C2H3 + H-2 Rate Constant JOURNAL OF PHYSICAL CHEMISTRY A Shao, J., Choudhary, R., Peng, Y., Davidson, D. F., Hanson, R. K. 2019; 123 (1): 15–20

  Abstract

  The rate constant for the reaction C2H4+H⇒C2H3+H2 was studied behind reflected shock waves at temperatures between 1619 and 1948 K and pressures near 10 atm in a mixture of C2H4, CH4, H2, and argon. C2H4 time-histories were measured using laser absorption of a CO2 gas laser near 10.53 microns. Experimental mixtures were designed to optimize sensitivity to the title reaction with only weak sensitivity to secondary reactions. Two mechanisms, FFCM1 and ARAMCO v2, are used for data analysis. The well-selected operating conditions and Monte-Carlo Sampling data analysis procedure resulted in mechanism independent reaction rate constant measurements with 2σ uncertainty of +/-35 %. The current data disagree with a broadly used theoretical calculation (Knyazev et al. (1996)), but they are in good consensus with one of the review studies (Baulch et al. (2005)), k=3.9×1022T3.62exp(-5670/T) cm3molecule-1s-1. To the best of our knowledge, this work provides the first high temperature study of C2H4+H⇒C2H3+H2 reaction rate constant with well-defined uncertainty.

  View details for PubMedID 30537818

• A streamlined approach to hybrid-chemistry modeling for a low cetane-number alternative jet fuel Combustion and Flame Pinkowski, N. H., Wang, Y., Cassady, S. J., Davidson, D. F., Hanson, R. K. 2019; 208: 15-26

  View details for DOI 10.1016/j.combustflame.2019.06.024

• On estimating physical and chemical properties of hydrocarbon fuels using mid-infrared FTIR spectra and regularized linear models Fuel Wang, Y., Ding, Y., Wei, W., Cao, Y., Davidson, D. F., Hanson, R. K. 2019; 255: 115715

  View details for DOI 10.1016/j.fuel.2019.115715

• Sensitive and Interference-Immune Formaldehyde Diagnostic for High-Temperature Reacting Gases Using Two-Color Laser Absorption Near 5.6 Microns Combustion and Flame Ding, Y., Wang, S., Hanson, R. K. 2019

  View details for DOI 10.1016/j.combustflame.2019.11.042

• High-Temperature Laminar Burning Velocity Experiments in a Shock Tube: LBV, Temperature and Species Measurements European Workshop on Flame Speed Measurements Ferris, A. M., Susa, A. J., Girard, J. J., Davidson, D. F., Hanson, R. K. 2019
• Experimental Measurement of Laminar Burning Velocity of n-Heptane at Variable Extents of Reaction in a Shock Tube Proc. of the 32nd International Symposium on Shock Waves (ISSW32) Susa, A. J., Ferris, A. M., Davidson, D. F., Hanson, R. K. 2019

  View details for DOI 10.3850/978-981-11-2730-4_0149-cd

• Measurement of the mid-infrared absorption spectra of ethylene (C2H4) and other molecules at high temperatures and pressures JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Strand, C. L., Ding, Y., Johnson, S. E., Hanson, R. K. 2019; 222: 122–29

  View details for DOI 10.1016/j.jqsrt.2018.10.030

  View details for Web of Science ID 000452576800012

• Shock Tube/Laser Absorption Measurements of the Pyrolysis of JP-10 Fuel AIAA SciTech Forum Johnson, S. E., Davidson, D. F., Hanson, R. K. 2019

  View details for DOI 10.2514/6.2019-0575

• Multi-wavelength speciation of high-temperature alternative and conventional jet fuel pyrolysis AIAA SciTech Forum Pinkowski, N. H., Davidson, D. F., Hanson, R. K. 2019

  View details for DOI 10.2514/6.2019-1769

• Experimental Shock Tube Measurements of Laminar Burning Velocity of n-Heptane and iso-Octane in the Negative Temperature Coefficient Regime AIAA SciTech Forum Susa, A. J., Ferris, A. M., Davidson, D. F., Hanson, R. K. 2019

  View details for DOI 10.2514/6.2019-0460

• Shock tube techniques for kinetic target data to improve reaction models Mathematical Modelling of Gas-Phase Complex Reaction Systems: Pyrolysis and Combustion, Volume 45 Wang, S., Davidson, D. F., Hanson, R. K. Elsevier. 2019

  View details for DOI https://doi.org/10.1016/B978-0-444-64087-1.00003-6

• Dual-comb Spectroscopy in Shock tubes: Mid-infrared Microsecond-resolved Spectrometer 11th Int. Conf. on Chemical Kinetics Hugi, A., Geiser, M., Horvath, R., Strand, C. L., Pinkowski, N. H., Ding, Y., Hanson, R. K. 2019
• Spectroscopic Applications of Quantum Cascade Laser Frequency Combs International Conference on Advanced Vibrational Spectroscopy Horvath, R., Mangold, M., Strand, C. L., Pinkowski, N. H., Ding, Y., Hanson, R. K. 2019
• n-Heptane Ignition: High-Speed Imaging in a High-Pressure Shock Tube Proceedings of the 27th International Colloquium on the Dynamics of Explosions and Reactive Systems Shao, J., Choudhary, R., Susa, A. J., Davidson, D. F., Hanson, R. K. 2019
• Measurements of Laminar Burning Velocity in a Shock Tube Proceedings of the 27th International Colloquium on the Dynamics of Explosions and Reactive Systems Susa, A. J., Ferris, A. M., Davidson, D. F., Hanson, R. K. 2019
• Multi-species time history measurements during ethanol pyrolysis behind reflected shock waves 11th U. S. National Combustion Meeting Choudhary, R., Peng, Y., Shao, J., Davidson, D. F. 2019
• Time-resolved Speciation of iso-Octane First-stage Ignition Products at Elevated Effective Pressures 11th U. S. National Combustion Meeting Susa, A. J., Davidson, D. F., Hanson, R. K. 2019
• Temperature, Species, and Laminar flame Speed Measurements in High-temperature, Premixed Ethane-Air Flames 11th U. S. National Combustion Meeting Ferris, A. M., Girard, J. J., Susa, A. J., Davidson, D. F., Hanson, R. K. 2019
• Information-driven Experiment Design for Shock Tube Kinetic Studies 11th U. S. National Combustion Meeting Wang, S., Davidson, D. F., Hanson, R. K. 2019
• Dual-comb Spectroscopy in Shock Tubes: Mid-Infrared Microsecond-resolved Spectrometer Proc. of the 32nd International Symposium on Shock Waves (ISSW32) Geiser, M., Horvath, R., Strand, C. L., Pinkowski, N. H., Ding, Y., Hanson, R. K. 2019

  View details for DOI 10.3850/978-981-11-2730-4_0303-cd

• Dual-comb Measurements behind Reflected Shock Waves Proc. of the 32nd International Symposium on Shock Waves (ISSW32) Pinkowski, N. H., Strand, C. L., Ding, Y., Hanson, R. K., Horvath, R., Geiser, M. 2019

  View details for DOI 10.3850/978-981-11-2730-4_0475-cd

• TDLAS Measurements of the Underexpanded Exhaust Plume from a Solid Propellant Gas Generator AIAA SciTech Forum Almodovar, C. A., Salazar, D. V., Strand, C. L., Hanson, R. K., Wright, R. G., Brophy, C. M. 2019

  View details for DOI 10.2514/6.2019-0028

• Measurements of Oxygen Vibrational Relaxation and Dissociation using Ultraviolet Laser Absorption in Shock Tube Experiments AIAA SciTech Forum Streicher, J. W., Krish, A., Wang, S., Davidson, D. F., Hanson, R. K. 2019

  View details for DOI 10.2514/6.2019-0795

• High-speed Imaging of Homogeneous and Inhomogeneous Ignition in a High-pressure Shock Tube AIAA SciTech Forum Shao, J., Choudhary, R., Susa, A. J., Peng, Y., Davidson, D. F., Hanson, R. K. 2019

  View details for DOI 10.2514/6.2019-1771

• Spectrally-resolved Absorption and Laser-induced Fluorescence of High-temperature Gases AIAA SciTech Forum Wang, S., Strand, C. L., Hanson, R. K. 2019

  View details for DOI 10.2514/6.2019-1612

• Direct Measurement of the JP-10+OH=Products Reaction Rate in Shock Tube Experiments AIAA SciTech Forum Zaczek, L. T., Hanson, R. K. 2019

  View details for DOI 10.2514/6.2019-2367

• A Single-ended, Mid-IR Sensor for Time—resolved Temperature and Species Measurements in a Hydrogen/Ethylene-fueled Rotating Detonation Engine AIAA SciTech Forum Cassady, S. J., Peng, W. Y., Strand, C. L., Jeffries, J. B., Hanson, R. K., Dausen, D. F., Brophy, C. M. 2019

  View details for DOI 10.2514/6.2019-0027

• Ignition Delay Time Measurements for Distillate and synthetic Jet Fuels AIAA SciTech Forum Wang, Y., Cao, Y., Davidson, D. F., Hanson, R. K. 2019

  View details for DOI 10.2514/6.2019-2248

• Demonstration of non-absorbing interference rejection using wavelength modulation spectroscopy in high-pressure shock tubes APPLIED PHYSICS B-LASERS AND OPTICS Wei, W., Peng, W., Wang, Y., Choudhary, R., Wang, S., Shao, J., Hanson, R. K. 2019; 125 (1)

  View details for DOI 10.1007/s00340-018-7118-3

  View details for Web of Science ID 000452951800001

• Single-ended mid-infrared laser-absorption sensor for time-resolved measurements of water concentration and temperature within the annulus of a rotating detonation engine PROCEEDINGS OF THE COMBUSTION INSTITUTE Peng, W., Cassady, S. J., Strand, C. L., Goldenstein, C. S., Spearrin, R., Brophy, C. M., Jeffries, J. B., Hanson, R. K. 2019; 37 (2): 1435–43

  View details for DOI 10.1016/j.proci.2018.05.021

  View details for Web of Science ID 000456621500020

• Ignition delay times of methane and hydrogen highly diluted in carbon dioxide at high pressures up to 300 atm PROCEEDINGS OF THE COMBUSTION INSTITUTE Shao, J., Choudhary, R., Davidson, D. E., Hanson, R. K., Barak, S., Vasu, S. 2019; 37 (4): 4555–62

  View details for DOI 10.1016/j.proci.2018.08.002

  View details for Web of Science ID 000457095600028

• Ignition delay time measurements and modeling for gasoline at very high pressures PROCEEDINGS OF THE COMBUSTION INSTITUTE Davidson, D. F., Shao, J. K., Choudhary, R., Mehl, M., Obrecht, N., Hanson, R. K. 2019; 37 (4): 4885–92

  View details for DOI 10.1016/j.proci.2018.08.032

  View details for Web of Science ID 000457095600064

• Cavity-enhanced absorption spectroscopy for shocktubes: Design and optimization PROCEEDINGS OF THE COMBUSTION INSTITUTE Chao, X., Shen, G., Sun, K., Wang, Z., Meng, Q., Wang, S., Hanson, R. K. 2019; 37 (2): 1345–53

  View details for DOI 10.1016/j.proci.2018.06.230

  View details for Web of Science ID 000456621500010

• Single-Ended Sensor for Thermometry and Speciation in Shock Tubes Using Native Surfaces IEEE Sensors Journal Peng, W. Y., Wang, Y., Cassady, S. J., Strand, C. L., Hanson, R. K. 2019

  View details for DOI 10.1109/JSEN.2019.2903989

• A comparative laser absorption and gas chromatography study of low-temperature n-heptane oxidation intermediates PROCEEDINGS OF THE COMBUSTION INSTITUTE Ferris, A. M., Susa, A. J., Davidson, D. F., Hanson, R. K. 2019; 37 (1): 249–57

  View details for DOI 10.1016/j.proci.2018.05.018

  View details for Web of Science ID 000456612200019

• Shock tube measurements of OH concentration time-histories in benzene, toluene, ethylbenzene and xylene oxidation PROCEEDINGS OF THE COMBUSTION INSTITUTE Wang, S., Davidson, D. F., Hanson, R. K. 2019; 37 (1): 163–70

  View details for DOI 10.1016/j.proci.2018.06.116

  View details for Web of Science ID 000456612200009

• Shock tube study of the rate constants for H +O-2 + M -> HO2 +M (M = Ar, H2O, CO2, N-2) at elevated pressures PROCEEDINGS OF THE COMBUSTION INSTITUTE Shao, J., Choudhary, R., Susa, A., Davidson, D. F., Hanson, R. K. 2019; 37 (1): 145–52

  View details for DOI 10.1016/j.proci.2018.05.077

  View details for Web of Science ID 000456612200007

• Temperature-dependent line parameter study of acetylene transitions near 3 mu m JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Cassady, S. J., Peng, W., Hanson, R. K. 2018; 221: 172–82

  View details for DOI 10.1016/j.jqsrt.2018.09.031

  View details for Web of Science ID 000452576900020

• Collisional-induced broadening and shift parameters of OH with Ar and N-2 near 308.6 nm, measured at T=1300-2000 K and P=20-100 atm JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Girard, J. J., Choudhary, R., Hanson, R. K. 2018; 221: 194–201

  View details for DOI 10.1016/j.jqsrt.2018.10.007

  View details for Web of Science ID 000452576900022

• Shock tube study of normal heptane first-stage ignition near 3.5 atm COMBUSTION AND FLAME Campbell, M. F., Wang, S., Davidson, D. F., Hanson, R. K. 2018; 198: 376–92

  View details for DOI 10.1016/j.combustflame.2018.08.008

  View details for Web of Science ID 000452581400033

• A physics based approach to modeling real-fuel combustion chemistry - IV. HyChem modeling of combustion kinetics of a bio-derived jet fuel and its blends with a conventional Jet A COMBUSTION AND FLAME Wang, K., Xu, R., Parise, T., Shao, J., Movaghar, A., Lee, D., Park, J., Gao, Y., Lu, T., Egolfopoulos, F. N., Davidson, D. F., Hanson, R. K., Bowman, C. T., Wang, H. 2018; 198: 477–89

  View details for DOI 10.1016/j.combustflame.2018.07.012

  View details for Web of Science ID 000452581400040

• A Physics-based approach to modeling real-fuel combustion chemistry - III. Reaction kinetic model of JP10 COMBUSTION AND FLAME Tao, Y., Xu, R., Wang, K., Shao, J., Johnson, S. E., Movaghar, A., Han, X., Park, J., Lu, T., Brezinsky, K., Egolfopoulos, F. N., Davidson, D. F., Hanson, R. K., Bowman, C. T., Wang, H. 2018; 198: 466–76

  View details for DOI 10.1016/j.combustflame.2018.08.022

  View details for Web of Science ID 000452581400039

• A combined laser absorption and gas chromatography sampling diagnostic for speciation in a shock tube COMBUSTION AND FLAME Ferris, A. M., Davidson, D. E., Hanson, R. K. 2018; 195: 40–49

  View details for DOI 10.1016/j.combustflame.2018.04.032

  View details for Web of Science ID 000440118500005

• High-speed imaging of inhomogeneous ignition in a shock tube Tulgestke, A. M., Johnson, S. E., Davidson, D. F., Hanson, R. K. SPRINGER. 2018: 1089–95

  View details for DOI 10.1007/s00193-018-0824-2

  View details for Web of Science ID 000444734200014

• A shock tube study of jet fuel pyrolysis and ignition at elevated pressures and temperatures FUEL Shao, J., Zhu, Y., Wang, S., Davidson, D. F., Hanson, R. K. 2018; 226: 338–44

  View details for DOI 10.1016/j.fuel.2018.04.028

  View details for Web of Science ID 000432923300038

• A shock tube study of ignition delay times in diluted methane, ethylene, propene and their blends at elevated pressures FUEL Shao, J., Davidson, D. F., Hanson, R. K. 2018; 225: 370–80

  View details for DOI 10.1016/j.fuel.2018.03.146

  View details for Web of Science ID 000432922400038

• Ultra-sensitive spectroscopy of OH radical in high-temperature transient reactions OPTICS LETTERS Wang, S., Hanson, R. K. 2018; 43 (15): 3518–21

  Abstract

  The hydroxyl (OH) radical is arguably the most important transient radical in high-temperature gas-phase combustion reactions, yet it is very difficult to measure because of its high reactivity and, thus, short lifetime and low concentration. This work reports the development of a novel method for ultra-sensitive, quantitative, and microsecond-resolved detection of OH based on UV frequency-modulation spectroscopy (FMS). To the best of the authors' knowledge, this is the first FMS demonstration in the near-UV spectral region for detection of short-lived radical species. Shot-noise-limited detection was achieved at an optical power of 25 mW. A proof-of-concept experiment in a tabletop H2O/He microwave discharge cell has reached a 1σ minimum detectable absorbance (MDA) of less than 2×10-4 over 1 MHz measurement bandwidth. High-temperature OH measurement was demonstrated in a 15 cm diameter shock tube, where a typical MDA of 3.0×10-4 was achieved at 1330 K, 0.38 atm, and 1 MHz. These preliminary results have outperformed the previous best MDA by more than a factor of 3; further improvement by another order of magnitude is anticipated, following the strategies outlined at the end of this Letter. The current method paves the path to parts per billion (ppb) -level OH detection capability and offers prospects to significantly advance fundamental combustion research by enabling direct observation of OH formation and scavenging kinetics during key stages of fuel oxidation that were inaccessible with previous methods.

  View details for DOI 10.1364/OL.43.003518

  View details for Web of Science ID 000440405900016

  View details for PubMedID 30067624

• A physics-based approach to modeling real-fuel combustion chemistry - II. Reaction kinetic models of jet and rocket fuels COMBUSTION AND FLAME Xu, R., Wang, K., Banerjee, S., Shao, J., Parise, T., Zhu, Y., Wang, S., Movaghar, A., Lee, D., Zhao, R., Han, X., Gao, Y., Lu, T., Brezinsky, K., Egolfopoulos, F. N., Davidson, D. F., Hanson, R. K., Bowman, C. T., Wang, H. 2018; 193: 520–37

  View details for DOI 10.1016/j.combustflame.2018.03.021

  View details for Web of Science ID 000436899700042

• A physics-based approach to modeling real-fuel combustion chemistry - I. Evidence from experiments, and thermodynamic, chemical kinetic and statistical considerations COMBUSTION AND FLAME Wang, H., Xu, R., Wang, K., Bowman, C. T., Hanson, R. K., Davidson, D. F., Brezinsky, K., Egolfopoulos, F. N. 2018; 193: 502–19

  View details for DOI 10.1016/j.combustflame.2018.03.019

  View details for Web of Science ID 000436899700041

• Development of a two-wavelength IR laser absorption diagnostic for propene and ethylene MEASUREMENT SCIENCE AND TECHNOLOGY Parise, T. C., Davidson, D. F., Hanson, R. K. 2018; 29 (5)

  View details for DOI 10.1088/1361-6501/aab02b

  View details for Web of Science ID 000428312700002

• High-sensitivity 308.6-nm laser absorption diagnostic optimized for OH measurement in shock tube combustion studies APPLIED PHYSICS B-LASERS AND OPTICS Wang, S., Hanson, R. K. 2018; 124 (3)

  View details for DOI 10.1007/s00340-018-6902-4

  View details for Web of Science ID 000427524300001

• Design and implementation of a laser-based absorption spectroscopy sensor for in situ monitoring of biomass gasification MEASUREMENT SCIENCE AND TECHNOLOGY Salazar, D., Goldenstein, C. S., Jeffries, J. B., Seiser, R., Cattolica, R. J., Hanson, R. K. 2017; 28 (12)

  View details for DOI 10.1088.1361-6501/aa8cf6

  View details for Web of Science ID 000416029100001

• A new diagnostic for hydrocarbon fuels using 3.41-mu m diode laser absorption COMBUSTION AND FLAME Wang, S., Parise, T., Johnson, S. E., Davidson, D. F., Hanson, R. K. 2017; 186: 129–39

  View details for DOI 10.1016/j.combustflame.2017.07.026

  View details for Web of Science ID 000413134100010

• Two-color laser absorption near 5 mu m for temperature and nitric oxide sensing in high-temperature gases JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Almodovar, C. A., Spearrin, R., Hanson, R. K. 2017; 203: 572–81

  View details for DOI 10.1016/j.jqsrt.2017.03.003

  View details for Web of Science ID 000414107400050

• Shock Tube and Laser Absorption Study of CH2O Oxidation via Simultaneous Measurements of OH and CO. The journal of physical chemistry. A Wang, S., Davidson, D. F., Hanson, R. K. 2017; 121 (45): 8561-8568

  Abstract

  The oxidation of Ar-diluted stoichiometric CH2O-O2 mixtures was studied behind reflected shock waves over temperatures of 1332-1685 K, at pressures of about 1.5 atm and initial CH2O mole fractions of 500, 1500, and 5000 ppm. Quantitative and time-resolved concentration histories of OH and CO (at both v″ = 0 and v″ = 1) were measured by narrow-linewidth laser absorption at 306.7 and 4854 nm, respectively. A time delay was observed between the formation of v″ = 0 and v″ = 1 states of CO, suggesting that CO was kinetically generated primarily in the ground state and then collisionally relaxed toward vibrational equilibrium. The measured CO and OH time-histories were used to evaluate the performance of four detailed reaction mechanisms regarding the oxidation chemistry of CH2O. Further analyses of these time-history data have also led to improved determination for the rate constants of two key reactions, namely H + O2 = O + OH (R1) and OH + CO = CO2 + H (R2), as follows: k1 = 8.04 × 1013 exp(-7370 K/T) cm3 mol-1 s-1, k2 = 1.90 × 1012 exp(-2760 K/T) cm3 mol-1 s-1; both expressions are valid over 1428-1685 K and have 1σ uncertainties of approximately ±10%.

  View details for DOI 10.1021/acs.jpca.7b09362

  View details for PubMedID 29065683

• Characterization of a Large-Scale Arcjet Facility Using Tunable Diode Laser Absorption Spectroscopy Nations, M., Chang, L. S., Jeffries, J. B., Hanson, R. K., MacDonald, M. E., Nawaz, A., Taunk, J. S., Goekcen, T., Raiche, G. AMER INST AERONAUTICS ASTRONAUTICS. 2017: 3757–66

  View details for DOI 10.2514/1.J056011

  View details for Web of Science ID 000413944800012

• Chemical kinetic modeling and shock tube study of methyl propanoate decomposition COMBUSTION AND FLAME Ning, H., Wu, J., Ma, L., Ren, W., Davidson, D. F., Hanson, R. K. 2017; 184: 30–40

  View details for DOI 10.1016/j.combustflame.2017.06.001

  View details for Web of Science ID 000408518600004

• Toward a better understanding of 2-butanone oxidation: Detailed species measurements and kinetic modeling COMBUSTION AND FLAME Hemken, C., Burke, U., Lam, K., Davidson, D. F., Hanson, R. K., Heufer, K., Kohse-Hoeinghaus, K. 2017; 184: 195–207

  View details for DOI 10.1016/j.combustflame.2017.06.007

  View details for Web of Science ID 000408518600016

• Large meta-analysis of genome-wide association studies identifies five loci for lean body mass NATURE COMMUNICATIONS Zillikens, M., Demissie, S., Hsu, Y., Yerges-Armstrong, L. M., Chou, W., Stolk, L., Livshits, G., Broer, L., Johnson, T., Koller, D. L., Kutalik, Z., Luan, J., Malkin, I., Ried, J. S., Smith, A. V., Thorleifsson, G., Vandenput, L., Zhao, J., Zhang, W., Aghdassi, A., Akesson, K., Amin, N., Baier, L. J., Barroso, I., Bennett, D. A., Bertram, L., Biffar, R., Bochud, M., Boehnke, M., Borecki, I. B., Buchman, A. S., Byberg, L., Campbell, H., Obanda, N., Cauley, J. A., Cawthon, P. M., Cederberg, H., Chen, Z., Cho, N. H., Choi, H., Claussnitzer, M., Collins, F., Cummings, S. R., De Jager, P. L., Demuth, I., Dhonukshe-Rutten, R. M., Diatchenko, L., Eiriksdottir, G., Enneman, A. W., Erdos, M., Eriksson, J. G., Eriksson, J., Estrada, K., Evans, D. S., Feitosa, M. F., Fu, M., Garcia, M., Gieger, C., Girke, T., Glazer, N. L., Grallert, H., Grewal, J., Han, B., Hanson, R. L., Hayward, C., Hofman, A., Hoffman, E. P., Homuth, G., Hsueh, W., Hubal, M. J., Hubbard, A., Huffman, K. M., Husted, L. B., Illig, T., Ingelsson, E., Ittermann, T., Jansson, J., Jordan, J. M., Jula, A., Karlsson, M., Khaw, K., Kilpainen, T. O., Klopp, N., Kloth, J. L., Koistinen, H. A., Kraus, W. E., Kritchevsky, S., Kuulasmaa, T., Kuusisto, J., Laakso, M., Lahti, J., Lang, T., Langdahl, B. L., Launer, L. J., Lee, J., Lerch, M. M., Lewis, J. R., Lind, L., Lindgren, C., Liu, Y., Liu, T., Liu, Y., Ljunggren, O., Lorentzon, M., Luben, R. N., Maixner, W., McGuigan, F. E., Medina-Gomez, C., Meitinger, T., Melhus, H., Mellstrom, D., Melov, S., Michaelsson, K., Mitchell, B. D., Morris, A. P., Mosekilde, L., Newman, A., Nielson, C. M., O'Connell, J. R., Oostra, B. A., Orwoll, E. S., Palotie, A., Parker, S., Peacock, M., Perola, M., Peters, A., Polasek, O., Prince, R. L., Raikkonen, K., Ralston, S. H., Ripatti, S., Robbins, J. A., Rotter, J. I., Rudan, I., Salomaa, V., Satterfield, S., Schadt, E. E., Schipf, S., Scott, L., Sehmi, J., Shen, J., Shin, C., Sigurdsson, G., Smith, S., Soranzo, N., Stancakova, A., Steinhagen-Thiessen, E., Streeten, E. A., Styrkarsdottir, U., Swart, K. A., Tan, S., Tarnopolsky, M. A., Thompson, P., Thomson, C. A., Thorsteinsdottir, U., Tikkanen, E., Tranah, G. J., Tuomilehto, J., van Schoor, N. M., Verma, A., Vollenweider, P., Voelzke, H., Wactawski-Wende, J., Walker, M., Weedon, M. N., Welch, R., Wichman, H., Widen, E., Williams, F. K., Wilson, J. F., Wright, N. C., Xie, W., Yu, L., Zhou, Y., Chambers, J. C., Doring, A., van Duijn, C. M., Econs, M. J., Gudnason, V., Kooner, J. S., Psaty, B. M., Spector, T. D., Stefansson, K., Rivadeneira, F., Uitterlinden, A. G., Wareham, N. J., Ossowski, V., Waterworth, D., Loos, R. F., Karasik, D., Harris, T. B., Ohlsson, C., Kiel, D. P. 2017; 8: 80

  Abstract

  Lean body mass, consisting mostly of skeletal muscle, is important for healthy aging. We performed a genome-wide association study for whole body (20 cohorts of European ancestry with n = 38,292) and appendicular (arms and legs) lean body mass (n = 28,330) measured using dual energy X-ray absorptiometry or bioelectrical impedance analysis, adjusted for sex, age, height, and fat mass. Twenty-one single-nucleotide polymorphisms were significantly associated with lean body mass either genome wide (p < 5 × 10-8) or suggestively genome wide (p < 2.3 × 10-6). Replication in 63,475 (47,227 of European ancestry) individuals from 33 cohorts for whole body lean body mass and in 45,090 (42,360 of European ancestry) subjects from 25 cohorts for appendicular lean body mass was successful for five single-nucleotide polymorphisms in/near HSD17B11, VCAN, ADAMTSL3, IRS1, and FTO for total lean body mass and for three single-nucleotide polymorphisms in/near VCAN, ADAMTSL3, and IRS1 for appendicular lean body mass. Our findings provide new insight into the genetics of lean body mass.Lean body mass is a highly heritable trait and is associated with various health conditions. Here, Kiel and colleagues perform a meta-analysis of genome-wide association studies for whole body lean body mass and find five novel genetic loci to be significantly associated.

  View details for PubMedID 28724990

• Dependence of Calculated Postshock Thermodynamic Variables on Vibrational Equilibrium and Input Uncertainty JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER Campbell, M. F., Owen, K. G., Davidson, D. F., Hanson, R. K. 2017; 31 (3): 586–608

  View details for DOI 10.2514/1.T4952

  View details for Web of Science ID 000405487900009

• Infrared laser-absorption sensing for combustion gases PROGRESS IN ENERGY AND COMBUSTION SCIENCE Goldenstein, C. S., Spearrin, R. M., Jeffries, J. B., Hanson, R. K. 2017; 60: 132-176

  View details for DOI 10.1016/j.pecs.2016.12.002

  View details for Web of Science ID 000398225200005

• Compact optical probe for flame temperature and carbon dioxide using interband cascade laser absorption near 4.2 mu m COMBUSTION AND FLAME Girard, J. J., Spearrin, R. M., Goldenstein, C. S., Hanson, R. K. 2017; 178: 158-167

  View details for DOI 10.1016/j.combustflame.2017.01.007

  View details for Web of Science ID 000397073200013

• Time-resolved sub-ppm CH3 detection in a shock tube using cavity-enhanced absorption spectroscopy with a ps-pulsed UV laser PROCEEDINGS OF THE COMBUSTION INSTITUTE Wang, S., Davidson, D. F., Jeffries, J. B., Hanson, R. K. 2017; 36 (3): 4549-4556

  View details for DOI 10.1016/j.proci.2016.08.012

  View details for Web of Science ID 000393412600137

• Combined Ab Initio, Kinetic Modeling, and Shock Tube Study of the Thermal Decomposition of Ethyl Formate. The journal of physical chemistry. A Ning, H. n., Wu, J. n., Ma, L. n., Ren, W. n., Davidson, D. F., Hanson, R. K. 2017; 121 (35): 6568–79

  Abstract

  The potential energy surfaces (PESs) and reaction rate constants of the unimolecular decomposition of ethyl formate (EF) were investigated using high-precision theoretical methods at the CCSD(T)/CBS(T-Q)//M06-2X/6-311++G(d,p) level of theory. The calculated PESs of EF dissociation and molecular decomposition reactions indicate that the intramolecular H-shift to produce formic acid and ethylene is the dominant decomposition pathway. A detailed chemical kinetic mechanism for EF pyrolysis was constructed by incorporating the important reactions of EF and its radicals into an existing mechanism previously developed for small methyl esters. The updated mechanism was first used to reproduce CO, CO2, and H2O concentration time histories during EF pyrolysis in the shock tube reported by Ren et al. [ Ren , W. , Mitchell Spearrin , R. , Davidson , D. F. , and Hanson , R. K. J. Phys. Chem. A 2014 , 118 , 1785 - 1798 ]. The rate of production and sensitivity analyses show that the competing dehydration and decarboxylation channels of the intermediate formic acid control the final product yields of EF pyrolysis. The EF mechanism was further validated against the shock tube data of OH, CO, CO2, and H2O time histories measured during EF oxidation (equivalence ratio Φ = 1.0) at 1331-1615 K and 1.52-1.74 atm. This revised EF mechanism captured all of the species' time histories over the entire temperature range. Such modeling capability was due to the more accurate rate constants of EF reactions determined by high-precision theoretical calculations and a high-fidelity C0-C2 basis mechanism.

  View details for PubMedID 28792750

• Shock tube/laser absorption measurements of the pyrolysis of a bimodal test fuel PROCEEDINGS OF THE COMBUSTION INSTITUTE Parise, T., Davidson, D. F., Hanson, R. K. 2017; 36 (1): 281-288

  View details for DOI 10.1016/j.proci.2016.07.081

  View details for Web of Science ID 000397464200023

• Pyrolysis and oxidation of methyl acetate in a shock tube: A multi-species time-history study PROCEEDINGS OF THE COMBUSTION INSTITUTE Ren, W., Lam, K., Davidson, D. F., Hanson, R. K., Yang, X. 2017; 36 (1): 255-264

  View details for DOI 10.1016/j.proci.2016.05.002

  View details for Web of Science ID 000397464200020

• Rate constants of long, branched, and unsaturated aldehydes with OH at elevated temperatures PROCEEDINGS OF THE COMBUSTION INSTITUTE Wang, S., Davidson, D. F., Hanson, R. K. 2017; 36 (1): 151-160

  View details for DOI 10.1016/j.proci.2016.06.017

  View details for Web of Science ID 000397464200008

• Ignition delay time correlations for distillate fuels FUEL Davidson, D. F., Zhu, Y., Shao, J., Hanson, R. K. 2017; 187: 26-32

  View details for DOI 10.1016/j.fuel.2016.09.047

  View details for Web of Science ID 000386187100004

• Mid-infrared laser absorption spectroscopy of NO2 at elevated temperatures JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Sur, R., Peng, W. Y., Strand, C., Spearrin, R. M., Jeffries, J. B., Hanson, R. K., Bekal, A., Haider, P., Poonacha, S. P., Vartak, S., Sridharan, A. K. 2017; 187: 364-374

  View details for DOI 10.1016/j.jqsrt.2016.10.016

  View details for Web of Science ID 000391899300036

• Single-ended mid-infrared laser-absorption sensor for simultaneous in situ measurements of H2O, CO2, CO, and temperature in combustion flows APPLIED OPTICS Peng, W. Y., Goldenstein, C. S., Spearrin, M., Jeffries, J. B., Hanson, R. K. 2016; 55 (33): 9347-9359

  View details for DOI 10.1364/AO.55.009347

  View details for Web of Science ID 000388936300003

• Kinetics of Excited Oxygen Formation in Shock-Heated O-2-Ar Mixtures JOURNAL OF PHYSICAL CHEMISTRY A Nations, M., Wang, S., Goldenstein, C. S., Davidson, D. F., Hanson, R. K. 2016; 120 (42): 8234-8243

  View details for DOI 10.1021/acs.jpca.6b07274

  View details for Web of Science ID 000386641400003

• Oxygen Vibrational Relaxation Times: Shock Tube/Laser Absorption Measurements JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER Owen, K. G., Davidson, D. F., Hanson, R. K. 2016; 30 (4): 791-798

  View details for DOI 10.2514/1.T4505

  View details for Web of Science ID 000387338000001

• Shock Tube Measurement for the Dissociation Rate Constant of Acetaldehyde Using Sensitive CO Diagnostics. journal of physical chemistry. A Wang, S., Davidson, D. F., Hanson, R. K. 2016; 120 (35): 6895-6901

  Abstract

  The rate constant of acetaldehyde thermal dissociation, CH3CHO = CH3 + HCO, was measured behind reflected shock waves at temperatures of 1273-1618 K and pressures near 1.6 and 0.34 atm. The current measurement utilized sensitive CO diagnostics to track the dissociation of CH3CHO via oxygen atom balance and inferred the title rate constant (k1) from CO time histories obtained in pyrolysis experiments of 1000 and 50 ppm of CH3CHO/Ar mixtures. By using dilute test mixtures, the current study successfully suppressed the interferences from secondary reactions and directly determined the title rate constant as k1(1.6 atm) = 1.1 × 10(14) exp(-36 700 K/T) s(-1) over 1273-1618 K and k1(0.34 atm) = 5.5 × 10(12) exp(-32 900 K/T) s(-1) over 1377-1571 K, with 2σ uncertainties of approximately ±30% for both expressions. Example simulations of existing reaction mechanisms updated with the current values of k1 demonstrated substantial improvements with regards to the acetaldehyde pyrolysis chemistry.

  View details for DOI 10.1021/acs.jpca.6b03647

  View details for PubMedID 27523494

• Improved Shock Tube Measurement of the CH4 + Ar = CH3 + H + Ar Rate Constant using UV Cavity-Enhanced Absorption Spectroscopy of CH3. journal of physical chemistry. A Wang, S., Davidson, D. F., Hanson, R. K. 2016; 120 (28): 5427-5434

  Abstract

  We report an improved measurement for the rate constant of methane dissociation in argon (CH4 + Ar = CH3 + H + Ar) behind reflected shock waves. The experiment was conducted using a sub-parts per million sensitivity CH3 diagnostic recently developed in our laboratory based on ultraviolet cavity-enhanced absorption spectroscopy. The high sensitivity of this diagnostic allowed for measurements of quantitatively resolved CH3 time histories during the initial stage of CH4 pyrolysis, where the reaction system is clean and free from influences of secondary reactions and temperature change. This high sensitivity also allowed extension of our measurement range to much lower temperatures (<1500 K). The current-reflected shock measurements were performed at temperatures between 1487 and 1866 K and pressures near 1.7 atm, resulting in the following Arrhenius rate constant expression for the title reaction: k(1.7 atm) = 3.7 × 10(16) exp(-42 200 K/T) cm(3)/mol·s, with a 2σ uncertainty factor of 1.25. The current data are in good consensus with various theoretical and review studies, but at the low temperature end they suggest a slightly higher (up to 35%) rate constant compared to these previous results. A re-evaluation of previous and current experimental data in the falloff region was also performed, yielding updated expressions for both the low-pressure limit and the high-pressure limit rate constants and improved agreement with all existing data.

  View details for DOI 10.1021/acs.jpca.6b02572

  View details for PubMedID 27380878

• AEROFROSH: a shock condition calculator for multi-component fuel aerosol-laden flows SHOCK WAVES Campbell, M. F., Haylett, D. R., Davidson, D. F., Hanson, R. K. 2016; 26 (4): 429-447

  View details for DOI 10.1007/s00193-015-0582-3

  View details for Web of Science ID 000382401300007

• High-sensitivity in situ QCLAS-based ammonia concentration sensor for high-temperature applications APPLIED PHYSICS B-LASERS AND OPTICS Peng, W. Y., Sur, R., Strand, C. L., Spearrin, R. M., Jeffries, J. B., Hanson, R. K. 2016; 122 (7)

  View details for DOI 10.1007/s00340-016-6464-2

  View details for Web of Science ID 000380265200008

• Line intensities and temperature-dependent line broadening coefficients of Q-branch transitions in the v(2) band of ammonia near 10.4 mu m JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Sur, R., Spearrin, R. M., Peng, W. Y., Strand, C. L., Jeffries, J. B., Enns, G. M., Hanson, R. K. 2016; 175: 90-99

  View details for DOI 10.1016/j.jqsrt.2016.02.002

  View details for Web of Science ID 000373542700009

• Line intensities and temperature-dependent line broadening coefficients of Q-branch transitions in the v2 band of ammonia near 10.4 μm. Journal of quantitative spectroscopy & radiative transfer Sur, R., Spearrin, R. M., Peng, W. Y., Strand, C. L., Jeffries, J. B., Enns, G. M., Hanson, R. K. 2016; 175: 90-99

  Abstract

  We report measured line intensities and temperature-dependent broadening coefficients of NH3 with Ar, N2, O2, CO2, H2O, and NH3 for nine sQ(J,K) transitions in the ν2 fundamental band in the frequency range 961.5-967.5 cm-1. This spectral region was chosen due to the strong NH3 absorption strength and lack of spectral interference from H2O and CO2 for laser-based sensing applications. Spectroscopic parameters were determined by multi-line fitting using Voigt lineshapes of absorption spectra measured with two quantum cascade lasers in thermodynamically-controlled optical cells. The temperature dependence of broadening was measured over a range of temperatures between 300 and 600 K. These measurements aid the development of mid-infrared NH3 sensors for a broad range of gas mixtures and at elevated temperatures.

  View details for DOI 10.1016/j.jqsrt.2016.02.002

  View details for PubMedID 29225373

  View details for PubMedCentralID PMC5722251

• Measurements of Oxygen Dissociation Using Laser Absorption JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER Owen, K. G., Davidson, D. F., Hanson, R. K. 2016; 30 (2): 274-278

  View details for DOI 10.2514/1.T4506

  View details for Web of Science ID 000374863100003

• High-speed OH* chemiluminescence imaging of ignition through a shock tube end-wall APPLIED PHYSICS B-LASERS AND OPTICS Troutman, V. A., Strand, C. L., Campbell, M. F., Tulgestke, A. M., Miller, V. A., Davidson, D. F., Hanson, R. K. 2016; 122 (3)

  View details for DOI 10.1007/s00340-016-6326-y

  View details for Web of Science ID 000372282600011

• Fiber-coupled diode-laser sensors for calibration-free stand-off measurements of gas temperature, pressure, and composition APPLIED OPTICS Goldenstein, C. S., Spearrin, R. M., Hanson, R. K. 2016; 55 (3): 479-484

  Abstract

  A fiber-coupled near-infrared diode-laser sensor for stand-off measurements of gas temperature, pressure, and composition is presented. This sensor utilizes a fiber bundle with six multimode catch fibers surrounding one single-mode pitch fiber to transmit and receive backscattered laser light in a handheld transmitter/receiver. Scanned-wavelength-modulation spectroscopy with 1f-normalized 2f-detection and fast (80-200 kHz) wavelength modulation were used to provide calibration-free measurements and reduce the influence of spurious cavity noise formed by the overlapping transmitted and reflected laser light. Demonstrations include two-color measurements of temperature, pressure, and H(2)O near 1.4 μm in a propane flame at 2 kHz (SNR=200) and measurements of CH(4) near 1.65 μm (SNR=20 to 1500) at stand-off distances of 15 cm and 10 m, respectively. The fraction of photons collected ranged from 10(4) to 1 parts per million at stand-off distances from 10 cm to 10 m, respectively, and is similar for aluminum and paper reflectors.

  View details for DOI 10.1364/AO.55.000479

  View details for Web of Science ID 000369055100033

  View details for PubMedID 26835920

• Scaling relation for high-temperature biodiesel surrogate ignition delay times FUEL Campbell, M. F., Davidson, D. F., Hanson, R. K. 2016; 164: 151-159

  View details for DOI 10.1016/j.fuel.2015.09.078

  View details for Web of Science ID 000363476000019

• Cavity-enhanced absorption spectroscopy with a ps-pulsed UV laser for sensitive, high-speed measurements in a shock tube OPTICS EXPRESS Wang, S., Sun, K., Davidson, D. F., Jeffries, J. B., Hanson, R. K. 2016; 24 (1): 308-318

  View details for DOI 10.1364/OE.24.000308

  View details for Web of Science ID 000368004800031

• Strategies for obtaining long constant-pressure test times in shock tubes SHOCK WAVES Campbell, M. F., Parise, T., Tulgestke, A. M., Spearrin, R. M., Davidson, D. F., Hanson, R. K. 2015; 25 (6): 651-665

  View details for DOI 10.1007/s00193-015-0596-x

  View details for Web of Science ID 000363060300007

• Shock-tube measurements of excited oxygen atoms using cavity-enhanced absorption spectroscopy APPLIED OPTICS Nations, M., Wang, S., Goldenstein, C. S., Sun, K., Davidson, D. F., Jeffries, J. B., Hanson, R. K. 2015; 54 (29): 8766-8775

  Abstract

  We report the use of cavity-enhanced absorption spectroscopy (CEAS) using two distributed feedback diode lasers near 777.2 and 844.6 nm for sensitive, time-resolved, in situ measurements of excited-state populations of atomic oxygen in a shock tube. Here, a 1% O₂/Ar mixture was shock-heated to 5400-8000 K behind reflected shock waves. The combined use of a low-finesse cavity, fast wavelength scanning of the lasers, and an off-axis alignment enabled measurements with 10 μs time response and low cavity noise. The CEAS absorption gain factors of 104 and 142 for the P₃5←S520 (777.2 nm) and P_0,1,23←S310 (844.6 nm) atomic oxygen transitions, respectively, significantly improved the detection sensitivity over conventional single-pass measurements. This work demonstrates the potential of using CEAS to improve shock-tube studies of nonequilibrium electronic-excitation processes at high temperatures.

  View details for DOI 10.1364/AO.54.008766

  View details for Web of Science ID 000362667200028

  View details for PubMedID 26479817

• Quantification of Supersonic Impulse Flow Conditions via High-Bandwidth Wavelength Modulation Absorption Spectroscopy AIAA JOURNAL Strand, C. L., Hanson, R. K. 2015; 53 (10): 2978-2987

  View details for DOI 10.2514/1.J053842

  View details for Web of Science ID 000361468800014

• The hidden complexities of the simple match PHYSICS OF FLUIDS Miller, V. A., Tilghman, M., Hanson, R. K. 2015; 27 (9)

  View details for DOI 10.1063/1.4930906

  View details for Web of Science ID 000362570800004

• Shock Tube Measurement of the High-Temperature Rate Constant for OH + CH3 -> Products JOURNAL OF PHYSICAL CHEMISTRY A Wang, S., Li, S., Davidson, D. F., Hanson, R. K. 2015; 119 (33): 8799-8805

  View details for DOI 10.1021/acs.jpca.5b05725

  View details for Web of Science ID 000360026500004

• Shock Tube Measurement of the High-Temperature Rate Constant for OH + CH3 → Products. The journal of physical chemistry. A Wang, S., Li, S., Davidson, D. F., Hanson, R. K. 2015; 119 (33): 8799-805

  Abstract

  The reaction between hydroxyl (OH) and methyl radicals (CH3) is critical to hydrocarbon oxidation. Motivated by the sparseness of its high-temperature rate constant data and the large uncertainties in the existing literature values, the current study has remeasured the overall rate constant of the OH + CH3 reaction and extended the measurement temperature range to 1214-1933 K, using simultaneous laser absorption diagnostics for OH and CH3 radicals behind incident and reflected shock waves. tert-Butyl hydroperoxide and azomethane were used as pyrolytic sources for the OH and CH3 radicals, respectively. The current study bridged the temperature ranges of existing experimental data, and good agreement is seen between the current measurement and some previous experimental and theoretical high-temperature studies. A recommendation for the rate constant expression of the title reaction, based on the weighted average of the high-temperature data from selected studies, is given by k1 = 4.19 × 10(1)(T/K)(3.15) exp(5270 K/T) cm(3) mol(-1) s(-1) ±30%, which is valid over 1000-2500 K.

  View details for DOI 10.1021/acs.jpca.5b05725

  View details for PubMedID 26230910

• Temperature and number density measurement in non-uniform supersonic flowfields undergoing mixing using toluene PLIF thermometry APPLIED PHYSICS B-LASERS AND OPTICS Gamba, M., Miller, V. A., Mungal, M. G., Hanson, R. K. 2015; 120 (2): 285-304

  View details for DOI 10.1007/s00340-015-6136-7

  View details for Web of Science ID 000358544600013

• Infrared planar laser-induced fluorescence with a CW quantum-cascade laser for spatially resolved CO2 and gas properties APPLIED PHYSICS B-LASERS AND OPTICS Goldenstein, C. S., Miller, V. A., Hanson, R. K. 2015; 120 (2): 185-199

  View details for DOI 10.1007/s00340-015-6167-0

  View details for Web of Science ID 000358544600001

• Shock-Tube Measurement of Acetone Dissociation Using Cavity-Enhanced Absorption Spectroscopy of CO. journal of physical chemistry. A Wang, S., Sun, K., Davidson, D. F., Jeffries, J. B., Hanson, R. K. 2015; 119 (28): 7257-7262

  Abstract

  A direct measurement for the rate constant of the acetone dissociation reaction (CH3COCH3 = CH3CO + CH3) was conducted behind reflected shock wave, utilizing a sub-ppm sensitivity CO diagnostic achieved by cavity-enhanced absorption spectroscopy (CEAS). The current experiment eliminated the influence from secondary reactions and temperature change by investigating the clean pyrolysis of <20 ppm acetone in argon. For the first time, the acetone dissociation rate constant (k1) was directly measured over 5.5 orders of magnitude with a high degree of accuracy: k1 (1004-1494 K, 1.6 atm) = 4.39 × 10(55) T(-11.394) exp(-52 140K/T) ± 24% s(-1). This result was seen to agree with most previous studies and has bridged the gap between their temperature and pressure conditions. The current work also served as an example demonstration of the potential of using the CEAS technique in shock-tube kinetics studies.

  View details for DOI 10.1021/jp511642a

  View details for PubMedID 25659401

• Scanned-wavelength-modulation-spectroscopy sensor for CO, CO2, CH4 and H2O in a high-pressure engineering-scale transport-reactor coal gasifier FUEL Sur, R., Sun, K., Jeffries, J. B., Socha, J. G., Hanson, R. K. 2015; 150: 102-111

  View details for DOI 10.1016/j.fuel.2015.02.003

  View details for Web of Science ID 000351710400013

• High-sensitivity interference-free diagnostic for measurement of methane in shock tubes JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Sur, R., Wang, S., Sun, K., Davidson, D. F., Jeffries, J. B., Hanson, R. K. 2015; 156: 80-87

  View details for DOI 10.1016/j.jqsrt.2015.01.023

  View details for Web of Science ID 000351969700009

• Shock tube and modeling study of 2,7-dimethyloctane pyrolysis and oxidation COMBUSTION AND FLAME Li, S., Sarathy, S. M., Davidson, D. F., Hanson, R. K., Westbrook, C. K. 2015; 162 (5): 2296-2306

  View details for DOI 10.1016/j.combustflame.2015.01.027

  View details for Web of Science ID 000358561500057

• An experimental and modeling study of propene oxidation. Part 2: Ignition delay time and flame speed measurements COMBUSTION AND FLAME Burke, S. M., Burke, U., Mc Donagh, R., Mathieu, O., Osorio, I., Keesee, C., Morones, A., Petersen, E. L., Wang, W., DeVerter, T. A., Oehlschlaeger, M. A., Rhodes, B., Hanson, R. K., Davidson, D. F., Weber, B. W., Sung, C., Santner, J., Ju, Y., Haas, F. M., Dryer, F. L., Volkov, E. N., Nilsson, E. J., Konnov, A. A., Alrefae, M., Khaled, F., Farooq, A., Dirrenberger, P., Glaude, P., Battin-Leclerc, F., Curran, H. J. 2015; 162 (2): 296-314

  View details for DOI 10.1016/j.combustflame.2014.07.032

  View details for Web of Science ID 000348411900003

• Diode-laser measurements of linestrength and temperature-dependent lineshape parameters for H2O transitions near 1.4 mu m using Voigt, Rautian, Galatry, and speed-dependent Voigt profiles JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Goldenstein, C. S., Hanson, R. K. 2015; 152: 127-139

  View details for DOI 10.1016/j.jqsrt.2014.11.008

  View details for Web of Science ID 000348959700011

• High temperature measurements for the rate constants of C-1-C-4 aldehydes with OH in a shock tube PROCEEDINGS OF THE COMBUSTION INSTITUTE Wang, S., Davidson, D. F., Hanson, R. K. 2015; 35: 473-480

  View details for DOI 10.1016/j.proci.2014.06.112

  View details for Web of Science ID 000348047500044

• Shock Tube/Laser Absorption Measurements of Jet Fuel Pyrolysis and Oxidation 53rd AIAA Aerospace Sciences Meeting Zhu, Y., Hanson, R. K., Davidson, D. F. 2015

  View details for DOI 10.2514/6.2015-1158

• Laser Absorption Diagnostics for Aldehydes in Shock Tube Kinetics Studies 29th International Symposium on Shock Waves Wang, S., Davidson, D. F., Hanson, R. K. 2015: 155–160

  View details for DOI 10.1007/978-3-319-16835-7_22

• Constrained Reaction Volume: A New Approach to Studying Reactive Systems in Shock Tubes 29th International Symposium on Shock Waves Hanson, R. K., Chakraborty, S., Pang, G. A., Ren, W., Wang, S., Davidson, D. F. 2015: 149–154

  View details for DOI 10.1007/978-3-319-16835-7_21

• Constrained reaction volume shock tube study of n-heptane oxidation: Ignition delay times and time-histories of multiple species and temperature PROCEEDINGS OF THE COMBUSTION INSTITUTE Campbell, M. F., Wang, S., Goldenstein, C. S., Spearrin, R. M., Tulgestke, A. M., Zaczek, L. T., Davidson, D. F., Hanson, R. K. 2015; 35: 231-239

  View details for DOI 10.1016/j.proci.2014.05.001

  View details for Web of Science ID 000348047500016

• Ignition delay times of conventional and alternative fuels behind reflected shock waves PROCEEDINGS OF THE COMBUSTION INSTITUTE Zhu, Y., Li, S., Davidson, D. F., Hanson, R. K. 2015; 35: 241-248

  View details for DOI 10.1016/j.proci.2014.05.034

  View details for Web of Science ID 000348047500017

• Shock Tube Study of Dimethylamine Oxidation INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Li, S., Davidson, D. F., Hanson, R. K. 2015; 47 (1): 19-26

  View details for DOI 10.1002/kin.20888

  View details for Web of Science ID 000345572600003

• High-temperature iso-butene absorption diagnostic for shock tube kinetics using a pulsed quantum cascade laser near 11.3 mu m PROCEEDINGS OF THE COMBUSTION INSTITUTE Spearrin, R. M., Li, S., Davidson, D. F., Jeffries, J. B., Hanson, R. K. 2015; 35: 3645-3651

  View details for DOI 10.1016/j.proci.2014.04.002

  View details for Web of Science ID 000348049500134

• A shock tube study of CH3OH + OH -> Products using OH laser absorption PROCEEDINGS OF THE COMBUSTION INSTITUTE Zaczek, L. T., Lam, K. Y., Davidson, D. F., Hanson, R. K. 2015; 35: 377-384

  View details for DOI 10.1016/j.proci.2014.05.051

  View details for Web of Science ID 000348047500033

• Infrared laser absorption sensors for multiple performance parameters in a detonation PROCEEDINGS OF THE COMBUSTION INSTITUTE Goldenstein, C. S., Spearrin, R. M., Jeffries, J. B., Hanson, R. K. 2015; 35: 3739-3747

  View details for DOI 10.1016/j.proci.2014.05.027

  View details for Web of Science ID 000348049500145

• Laser absorption of nitric oxide for thermometry in high-enthalpy air MEASUREMENT SCIENCE & TECHNOLOGY Spearrin, R. M., Schultz, I. A., Jeffries, J. B., Hanson, R. K. 2014; 25 (12)

  View details for DOI 10.1088/0957-0233/25/12/125103

  View details for Web of Science ID 000345286800013

• Reaction Rate Constant of CH2O + H = HCO + H-2 Revisited: A Combined Study of Direct Shock Tube Measurement and Transition State Theory Calculation JOURNAL OF PHYSICAL CHEMISTRY A Wang, S., Dames, E. E., Davidson, D. F., Hanson, R. K. 2014; 118 (44): 10201-10209

  View details for DOI 10.1021/jp5085795

  View details for Web of Science ID 000344579100005

• Reaction rate constant of CH2O + H = HCO + H2 revisited: a combined study of direct shock tube measurement and transition state theory calculation. The journal of physical chemistry. A Wang, S., Dames, E. E., Davidson, D. F., Hanson, R. K. 2014; 118 (44): 10201-9

  Abstract

  The rate constant of the H-abstraction reaction of formaldehyde (CH2O) by hydrogen atoms (H), CH2O + H = H2 + HCO, has been studied behind reflected shock waves with use of a sensitive mid-IR laser absorption diagnostic for CO, over temperatures of 1304-2006 K and at pressures near 1 atm. C2H5I was used as an H atom precursor and 1,3,5-trioxane as the CH2O precursor, to generate a well-controlled CH2O/H reacting system. By designing the experiments to maintain relatively constant H atom concentrations, the current study significantly boosted the measurement sensitivity of the target reaction and suppressed the influence of interfering reactions. The measured CH2O + H rate constant can be expressed in modified Arrhenius from as kCH2O+H(1304-2006 K, 1 atm) = 1.97 × 10(11)(T/K)(1.06) exp(-3818 K/T) cm(3) mol(-1)s(-1), with uncertainty limits estimated to be +18%/-26%. A transition-state-theory (TST) calculation, using the CCSD(T)-F12/VTZ-F12 level of theory, is in good agreement with the shock tube measurement and extended the temperature range of the current study to 200-3000 K, over which a modified Arrhenius fit of the rate constant can be expressed as kCH2O+H(200-3000 K) = 5.86 × 10(3)(T/K)(3.13) exp(-762 K/T) cm(3) mol(-1)s(-1).

  View details for DOI 10.1021/jp5085795

  View details for PubMedID 25319141

• Simultaneous sensing of temperature, CO, and CO2 in a scramjet combustor using quantum cascade laser absorption spectroscopy APPLIED PHYSICS B-LASERS AND OPTICS Spearrin, R. M., Goldenstein, C. S., Schultz, I. A., Jeffries, J. B., Hanson, R. K. 2014; 117 (2): 689-698

  View details for DOI 10.1007/s00340-014-5884-0

  View details for Web of Science ID 000343717300021

• Hypersonic Scramjet Testing via Diode Laser Absorption in a Reflected Shock Tunnel JOURNAL OF PROPULSION AND POWER Schultz, I. A., Goldenstein, C. S., Strand, C. L., Jeffries, J. B., Hanson, R. K., Goyne, C. P. 2014; 30 (6): 1586-1594

  View details for DOI 10.2514/1.B35220

  View details for Web of Science ID 000344145000018

• Multispecies Midinfrared Absorption Measurements in a Hydrocarbon-Fueled Scramjet Combustor JOURNAL OF PROPULSION AND POWER Schultz, I. A., Goldenstein, C. S., Spearrin, R. M., Jeffries, J. B., Hanson, R. K., Rockwell, R. D., Goyne, C. P. 2014; 30 (6): 1595-1604

  View details for DOI 10.2514/1.B35261

  View details for Web of Science ID 000344145000019

• A scanned-wavelength-modulation absorption-spectroscopy sensor for temperature and H2O in low-pressure flames MEASUREMENT SCIENCE & TECHNOLOGY Smith, C. H., Goldenstein, C. S., Hanson, R. K. 2014; 25 (11)

  View details for DOI 10.1088/0957-0233/25/11/115501

  View details for Web of Science ID 000343940800027

• Spatially Resolved Water Measurements in a Scramjet Combustor Using Diode Laser Absorption JOURNAL OF PROPULSION AND POWER Schultz, I. A., Goldenstein, C. S., Jeffries, J. B., Hanson, R. K., Rockwell, R. D., Goyne, C. P. 2014; 30 (6): 1551-1558

  View details for DOI 10.2514/1.B35219

  View details for Web of Science ID 000344145000014

• A comparative study of the chemical kinetics of methyl and ethyl propanoate FUEL Farooq, A., Davidson, D. F., Hanson, R. K., Westbrook, C. K. 2014; 134: 26-38

  View details for DOI 10.1016/j.fuel.2014.05.035

  View details for Web of Science ID 000340304100004

• Time-resolved in situ detection of CO in a shock tube using cavity-enhanced absorption spectroscopy with a quantum-cascade laser near 4.6 mu m OPTICS EXPRESS Sun, K., Wang, S., Sur, R., Chao, X., Jeffries, J. B., Hanson, R. K. 2014; 22 (20): 24559-24565

  View details for DOI 10.1364/OE.22.024559

  View details for Web of Science ID 000342757000079

• Application of wavelength-scanned wavelength-modulation spectroscopy H2O absorption measurements in an engineering-scale high-pressure coal gasifier APPLIED PHYSICS B-LASERS AND OPTICS Sun, K., Sur, R., Jeffries, J. B., Hanson, R. K., Clark, T., Anthony, J., Machovec, S., Northington, J. 2014; 117 (1): 411-421

  View details for DOI 10.1007/s00340-014-5850-x

  View details for Web of Science ID 000342225300048

• Recent advances in laser absorption and shock tube methods for studies of combustion chemistry PROGRESS IN ENERGY AND COMBUSTION SCIENCE Hanson, R. K., Davidson, D. F. 2014; 44: 103-114

  View details for DOI 10.1016/j.pecs.2014.05.001

  View details for Web of Science ID 000340340800004

• 20 kHz toluene planar laser-induced fluorescence imaging of a jet in nearly sonic crossflow APPLIED PHYSICS B-LASERS AND OPTICS Miller, V. A., Troutman, V. A., Mungal, M. G., Hanson, R. K. 2014; 117 (1): 401-410

  View details for DOI 10.1007/s00340-014-5849-3

  View details for Web of Science ID 000342225300047

• Shock tube study of ethylamine pyrolysis and oxidation COMBUSTION AND FLAME Li, S., Davidson, D. F., Hanson, R. K. 2014; 161 (10): 2512-2518

  View details for DOI 10.1016/j.combustflame.2014.04.002

  View details for Web of Science ID 000341905200004

• High-bandwidth scanned-wavelength-modulation spectroscopy sensors for temperature and H2O in a rotating detonation engine MEASUREMENT SCIENCE & TECHNOLOGY Goldenstein, C. S., Almodovar, C. A., Jeffries, J. B., Hanson, R. K., Brophy, C. M. 2014; 25 (10)

  View details for DOI 10.1088/0957-0233/25/10/105104

  View details for Web of Science ID 000342357400015

• Pyrolysis study of conventional and alternative fuels behind reflected shock waves FUEL Li, S., Zhu, Y., Davidson, D. F., Hanson, R. K. 2014; 132: 170-177

  View details for DOI 10.1016/j.fuel.2014.04.077

  View details for Web of Science ID 000336669500023

• FTIR measurements of mid-IR absorption spectra of gaseous fatty acid methyl esters at T=25-500 degrees C JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Campbell, M. F., Freeman, K. G., Davidson, D. F., Hanson, R. K. 2014; 145: 57-73

  View details for DOI 10.1016/j.jqsrt.2014.04.017

  View details for Web of Science ID 000338821700007

• Multi-band infrared CO2 absorption sensor for sensitive temperature and species measurements in high-temperature gases APPLIED PHYSICS B-LASERS AND OPTICS Spearrin, R. M., Ren, W., Jeffries, J. B., Hanson, R. K. 2014; 116 (4): 855-865

  View details for DOI 10.1007/s00340-014-5772-7

  View details for Web of Science ID 000341369600011

• Scanned-wavelength-modulation spectroscopy near 2.5 mu m for H2O and temperature in a hydrocarbon-fueled scramjet combustor APPLIED PHYSICS B-LASERS AND OPTICS Goldenstein, C. S., Schultz, I. A., Spearrin, R. M., Jeffries, J. B., Hanson, R. K. 2014; 116 (3): 717-727

  View details for DOI 10.1007/s00340-013-5755-0

  View details for Web of Science ID 000340492400024

• Wavelength-modulation spectroscopy near 2.5 mu m for H2O and temperature in high-pressure and -temperature gases APPLIED PHYSICS B-LASERS AND OPTICS Goldenstein, C. S., Spearrin, R. M., Jeffries, J. B., Hanson, R. K. 2014; 116 (3): 705-716

  View details for DOI 10.1007/s00340-013-5754-1

  View details for Web of Science ID 000340492400023

• Shock Tube Measurements of Ignition Delay Times for the Butanol Isomers Using the Constrained-Reaction-VolumeStrategy INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Bec, I. L., Zhu, Y., Davidson, D. F., Hanson, R. K. 2014; 46 (8): 433-442

  View details for DOI 10.1002/kin.20859

  View details for Web of Science ID 000338008900002

• TDLAS-based sensors for in situ measurement of syngas composition in a pressurized, oxygen-blown, entrained flow coal gasifier APPLIED PHYSICS B-LASERS AND OPTICS Sur, R., Sun, K., Jeffries, J. B., Hanson, R. K., Pummill, R. J., Waind, T., Wagner, D. R., Whitty, K. J. 2014; 116 (1): 33-42

  View details for DOI 10.1007/s00340-013-5644-6

  View details for Web of Science ID 000337498500006

• Near-kHz 3D tracer-based LIF imaging of a co-flow jet using toluene MEASUREMENT SCIENCE & TECHNOLOGY Miller, V. A., Troutman, V. A., Hanson, R. K. 2014; 25 (7)

  View details for DOI 10.1088/0957-0233/25/7/075403

  View details for Web of Science ID 000338634700033

• Laser absorption diagnostic for measuring acetylene concentrations in shock tubes JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Stranic, I., Hanson, R. K. 2014; 142: 58-65

  View details for DOI 10.1016/j.jqsrt.2014.03.024

  View details for Web of Science ID 000336706300007

• Ignition delay times of very-low-vapor-pressure biodiesel surrogates behind reflected shock waves FUEL Campbell, M. F., Davidson, D. F., Hanson, R. K. 2014; 126: 271-281

  View details for DOI 10.1016/j.fuel.2014.02.050

  View details for Web of Science ID 000333978500033

• Diode Laser Absorption Sensor for Combustion Progress in a Model Scramjet JOURNAL OF PROPULSION AND POWER Schultz, I. A., Goldenstein, C. S., Jeffries, J. B., Hanson, R. K., Rockwell, R. D., Goyne, C. P. 2014; 30 (3): 550-557

  View details for DOI 10.2514/1.B34905

  View details for Web of Science ID 000336353500004

• A second-generation constrained reaction volume shock tube. Review of scientific instruments Campbell, M. F., Tulgestke, A. M., Davidson, D. F., Hanson, R. K. 2014; 85 (5): 055108-?

  Abstract

  We have developed a shock tube that features a sliding gate valve in order to mechanically constrain the reactive test gas mixture to an area close to the shock tube endwall, separating it from a specially formulated non-reactive buffer gas mixture. This second-generation Constrained Reaction Volume (CRV) strategy enables near-constant-pressure shock tube test conditions for reactive experiments behind reflected shocks, thereby enabling improved modeling of the reactive flow field. Here we provide details of the design and operation of the new shock tube. In addition, we detail special buffer gas tailoring procedures, analyze the buffer/test gas interactions that occur on gate valve opening, and outline the size range of fuels that can be studied using the CRV technique in this facility. Finally, we present example low-temperature ignition delay time data to illustrate the CRV shock tube's performance.

  View details for DOI 10.1063/1.4875056

  View details for PubMedID 24880416

• Wavelength-modulation spectroscopy near 1.4 mu m for measurements of H2O and temperature in high-pressure and-temperature gases MEASUREMENT SCIENCE & TECHNOLOGY Goldenstein, C. S., Spearrin, R. M., Schultz, I. A., Jeffries, J. B., Hanson, R. K. 2014; 25 (5)

  View details for DOI 10.1088/0957-0233/25/5/055101

  View details for Web of Science ID 000334352000009

• An improved kinetic mechanism for 3-pentanone pyrolysis and oxidation developed using multispecies time histories in shock-tubes COMBUSTION AND FLAME Dames, E. E., Lam, K., Davidson, D. F., Hanson, R. K. 2014; 161 (5): 1135-1145

  View details for DOI 10.1016/j.combustflame.2013.11.010

  View details for Web of Science ID 000334654000001

• Sensitive and rapid laser diagnostic for shock tube kinetics studies using cavity-enhanced absorption spectroscopy OPTICS EXPRESS Sun, K., Wang, S., Sur, R., Chao, X., Jeffries, J. B., Hanson, R. K. 2014; 22 (8): 9291-9300

  Abstract

  We report the first application of cavity-enhanced absorption spectroscopy (CEAS) using a coherent light source for sensitive and rapid gaseous species time-history measurements in a shock tube. Off-axis alignment and fast scanning of the laser wavelength were used to minimize coupling noise in a low-finesse cavity. An absorption gain factor of 83 with a measurement time resolution of 20 µs was demonstrated for C2H2 detection using a near-infrared transition near 1537 nm, corresponding to a noise-equivalent detection limit of 20 ppm at 296 K and 76 ppm at 906 K at 50 kHz. This substantial gain in signal, relative to conventional single-pass absorption, will enable ultra-sensitive species detection in shock tube kinetics studies, particularly useful for measurements of minor species and for studies of dilute reactive systems.

  View details for DOI 10.1364/OE.22.009291

  View details for Web of Science ID 000335902200046

  View details for PubMedID 24787817

• Multi-species laser absorption sensors for in situ monitoring of syngas composition APPLIED PHYSICS B-LASERS AND OPTICS Sur, R., Sun, K., Jeffries, J. B., Hanson, R. K. 2014; 115 (1): 9-24

  View details for DOI 10.1007/s00340-013-5567-2

  View details for Web of Science ID 000332853000002

• Quantum cascade laser absorption sensor for carbon monoxide in high-pressure gases using wavelength modulation spectroscopy APPLIED OPTICS Spearrin, R. M., Goldenstein, C. S., Jeffries, J. B., Hanson, R. K. 2014; 53 (9): 1938-1946

  Abstract

  A tunable quantum cascade laser sensor, based on wavelength modulation absorption spectroscopy near 4.8 μm, was developed to measure CO concentration in harsh, high-pressure combustion gases. The sensor employs a normalized second harmonic detection technique (WMS-2f/1f) at a modulation frequency of 50 kHz. Wavelength selection at 2059.91  cm^-1 targets the P(20) transition within the fundamental vibrational band of CO, chosen for absorption strength and relative isolation from infrared water and carbon dioxide absorption. The CO spectral model is defined by the Voigt line-shape function, and key line-strength and line-broadening spectroscopic parameters were taken from the literature or measured. Sensitivity analysis identified the CO-N₂ collisional broadening coefficient as most critical for uncertainty mitigation in hydrocarbon/air combustion exhaust measurements, and this parameter was experimentally derived over a range of combustion temperatures (1100-2600 K) produced in a shock tube. Accuracy of the wavelength-modulation-spectroscopy-based sensor, using the refined spectral model, was validated at pressures greater than 40 atm in nonreactive shock-heated gas mixtures. The laser was then free-space coupled to an indium-fluoride single-mode fiber for remote light delivery. The fiber-coupled sensor was demonstrated on an ethylene/air pulse detonation combustor, providing time-resolved (∼20  kHz), in situ measurements of CO concentration in a harsh flow field.

  View details for DOI 10.1364/AO.53.001938

  View details for Web of Science ID 000333343900028

  View details for PubMedID 24663473

• Experimental and Modeling Study of the Thermal Decomposition of C3-C5 Ethyl Esters Behind Reflected Shock Waves JOURNAL OF PHYSICAL CHEMISTRY A Ren, W., Spearrin, R. M., Davidson, D. F., Hanson, R. K. 2014; 118 (10): 1785-1798

  Abstract

  The thermal decomposition of three ethyl esters, ethyl formate (C3H6O2), ethyl acetate (C4H8O2), and ethyl propanoate (C5H10O2), was studied behind reflected shock waves using laser absorption to measure concentration time-histories of H2O, CO2, and CO. Experimental conditions covered temperatures of 1301-1636 K, pressures of 1.48-1.72 atm, and reactant concentrations of 2000 ppm in argon. Recently developed mid-infrared laser diagnostics for H2O (2.5 μm), CO2 (4.3 μm), and CO (4.6 μm) provide orders-of-magnitude greater detectivity compared to previous near-infrared absorption sensors. The experimental results have highlighted significant differences among these three ethyl esters: negligible CO2 production during ethyl formate pyrolysis, quite slow CO formation rate during ethyl acetate pyrolysis, and nearly equal formation rate of H2O, CO2, and CO during ethyl propanoate pyrolysis. Detailed kinetic modeling was performed to understand the destruction pathways of these three ethyl esters with different alkyl chain lengths. Rate of production and sensitivity analyses were also carried out to interpret the experimental results and to identify the key reactions affecting experimental results.

  View details for DOI 10.1021/jp411766b

  View details for Web of Science ID 000333006100005

  View details for PubMedID 24450585

• 1-Butanol ignition delay times at low temperatures: An application of the constrained-reaction-volume strategy COMBUSTION AND FLAME Zhu, Y., Davidson, D. F., Hanson, R. K. 2014; 161 (3): 634-643

  View details for DOI 10.1016/j.combustflame.2013.06.028

  View details for Web of Science ID 000331428100002

• Shock Tube Measurements of the Rate Constant for the Reaction Ethanol plus OH JOURNAL OF PHYSICAL CHEMISTRY A Stranic, I., Pang, G. A., Hanson, R. K., Golden, D. M., Bowmant, C. T. 2014; 118 (5): 822-828

  Abstract

  The overall rate constant for the reaction ethanol + OH → products was determined experimentally from 900 to 1270 K behind reflected shock waves. Ethan(18)ol was utilized for these measurements in order to avoid the recycling of OH radicals following H-atom abstraction at the β-site of ethanol. Similar experiments were also performed with unlabeled ethan(16)ol in order to infer the rate constant that excludes reactivity at the β-site. The two data sets were used to directly infer the branching ratio for the reaction at the β-site. Experimental data in the current study and in previous low-temperature studies for the overall rate constant are best fit by the expression koverall = 5.07 × 10(5) T[K](2.31) exp(608/T[K]) cm(3) mol(-1) s(-1), valid from 300 to 1300 K. Measurements indicate that the branching ratio of the β-site is between 20 and 25% at the conditions studied. Pseudo-first-order reaction conditions were generated using tert-butylhydroperoxide (TBHP) as a fast source of (16)OH with ethanol in excess. (16)OH mole fraction time-histories were measured using narrow-line width laser absorption near 307 nm. Measurements were performed at the linecenter of the R22(5.5) transition in the A-X(0,0) band of (16)OH that does not overlap with any absorption features of (18)OH, thus producing a measurement of the (16)OH mole fraction that is insensitive to the presence of (18)OH.

  View details for DOI 10.1021/jp410853f

  View details for Web of Science ID 000331153400004

• Pyrolysis and oxidation of decalin at elevated pressures: A shock-tube study COMBUSTION AND FLAME Zhu, Y., Davidson, D. F., Hanson, R. K. 2014; 161 (2): 371-383

  View details for DOI 10.1016/j.combustflame.2013.09.005

  View details for Web of Science ID 000330094800001

• Secondary Diaphragm Thickness Effects and Improved Pressure Measurements in an Expansion Tube AIAA JOURNAL Miller, V. A., Gamba, M., Mungal, M. G., Hanson, R. K. 2014; 52 (2): 451-455

  View details for DOI 10.2514/1.J052767

  View details for Web of Science ID 000337804700019

• Shock tube measurements of branched alkane ignition delay times FUEL Li, S., Campos, A., Davidson, D. F., Hanson, R. K. 2014; 118: 398-405

  View details for DOI 10.1016/j.fuel.2013.11.028

  View details for Web of Science ID 000329116600050

• Fitting of calibration-free scanned-wavelength-modulation spectroscopy spectra for determination of gas properties and absorption lineshapes APPLIED OPTICS Goldenstein, C. S., Strand, C. L., Schultz, I. A., Sun, K., Jeffries, J. B., Hanson, R. K. 2014; 53 (3): 356-367

  Abstract

  The development and initial demonstration of a scanned-wavelength, first-harmonic-normalized, wavelength-modulation spectroscopy with nf detection (scanned-WMS-nf/1f) strategy for calibration-free measurements of gas conditions are presented. In this technique, the nominal wavelength of a modulated tunable diode laser (TDL) is scanned over an absorption transition to measure the corresponding scanned-WMS-nf/1f spectrum. Gas conditions are then inferred from least-squares fitting the simulated scanned-WMS-nf/1f spectrum to the measured scanned-WMS-nf/1f spectrum, in a manner that is analogous to widely used scanned-wavelength direct-absorption techniques. This scanned-WMS-nf/1f technique does not require prior knowledge of the transition linewidth for determination of gas properties. Furthermore, this technique can be used with any higher harmonic (i.e., n>1), modulation depth, and optical depth. Selection of the laser modulation index to maximize both signal strength and sensitivity to spectroscopic parameters (i.e., gas conditions), while mitigating distortion, is described. Last, this technique is demonstrated with two-color measurements in a well-characterized supersonic flow within the Stanford Expansion Tube. In this demonstration, two frequency-multiplexed telecommunication-grade TDLs near 1.4 μm were scanned at 12.5 kHz (i.e., measurement repetition rate of 25 kHz) and modulated at 637.5 and 825 kHz to determine the gas temperature, pressure, H₂O mole fraction, velocity, and absorption transition lineshape. Measurements are shown to agree within uncertainty (1%-5%) of expected values.

  View details for DOI 10.1364/AO.53.000356

  View details for Web of Science ID 000330172300007

  View details for PubMedID 24514120

• High-Temperature Measurements of the Reactions of OH with Ethylamine and Dimethylamine JOURNAL OF PHYSICAL CHEMISTRY A Li, S., Dames, E., Davidson, D. F., Hanson, R. K. 2014; 118 (1): 70-77

  View details for DOI 10.1021/jp411141w

  View details for Web of Science ID 000329678100008

• High-temperature measurements of the reactions of OH with ethylamine and dimethylamine. The journal of physical chemistry. A Li, S., Dames, E., Davidson, D. F., Hanson, R. K. 2014; 118 (1): 70-7

  Abstract

  The overall rate constants of hydroxyl radicals (OH) with ethylamine (EA: CH3CH2NH2) and dimethylamine (DMA: CH3NHCH3) were investigated behind reflected shock waves using UV laser absorption of OH radicals near 306.7 nm. tert-Butyl hydroperoxide (TBHP) was used as the fast source of OH at elevated temperatures. Test gas mixtures of individual amines and TBHP, diluted in argon, were shock-heated to temperatures from 901 to 1368 K at pressures near 1.2 atm. The overall rate constants were determined by fitting the measured OH time-histories with the computed profiles using a detailed mechanism developed by Lucassen et al. (Combust. Flame 2012, 159, 2254-2279). Over the temperature range studied, the measured rate constants can be expressed as kEA+OH = 1.10 × 10(7)·T(1.93) exp(1450/T) cm(3) mol(-1) s(-1), and kDMA+OH = 2.26 × 10(4)·T(2.69) exp(1797/T) cm(3) mol(-1) s(-1). Detailed error analyses were performed to estimate the overall uncertainties of the measured reaction rate constants, and the estimated (2σ) uncertainties were found to be ±31% at 901 K and ±22% at 1368 K for kEA+OH, and ±29% at 925 K and ±21% at 1307 K for kDMA+OH. Variational transition state theory was used to compute the H-abstraction rates by OH for ethylamine and dimethylamine, with the potential energy surface, geometries, frequencies, and electronic energies calculated by Galano and Alvarez-Idaboy (J. Chem. Theory Comput. 2008, 4, 322-327) at CCSD(T)/6-311++G(2d,2p) level of theory. The calculated reaction rate constants are in good agreement with the experimental data.

  View details for DOI 10.1021/jp411141w

  View details for PubMedID 24328257

• Uncertainty-quantification analysis of the effects of residual impurities on hydrogen-oxygen ignition in shock tubes COMBUSTION AND FLAME Urzay, J., Kseib, N., Davidson, D. F., Iaccarino, G., Hanson, R. K. 2014; 161 (1): 1-15

  View details for DOI 10.1016/j.combustflame.2013.08.012

  View details for Web of Science ID 000327419300001

• Mid-infrared Absorption Sensor for Measurements of CO and CO2 in Propulsion Flows 52nd Aerospace Sciences Meeting Spearrin, R. M., Jeffries, J. B., Hanson, R. K. 2014

  View details for DOI 10.2514/6.2014-0390

• Hypersonic scramjet testing via TDLAS measurements of temperature and column density in a reflected shock tunnel 52nd Aerospace Sciences Meeting Schultz, I. A., Goldenstein, C. S., Strand, C. L., Jeffries, J. B., Hanson, R. K., Goyne, C. P. 2014

  View details for DOI 10.2514/6.2014-0389

• 20 kHz tracer-based PLIF of a jet in crossflow in an expansion tube 17th International Symposium on Applications of Laser Techniques to Fluid Mechanics Miller, V. A., Troutman, V. A., Mungal, M. G., Hanson, R. K. 2014
• Spatially-resolved TDLAS measurements of temperature, H2O column density, and velocity in a direct-connect scramjet combustor 52nd Aerospace Sciences Meeting Schultz, I. A., Goldenstein, C. S., Jeffries, J. B., Hanson, R. K., Rockwell, R. D., Goyne, C. P. 2014

  View details for DOI 10.2514/6.2014-1241

• Shock tube study of the pressure dependence of monomethylhydrazine pyrolysis COMBUSTION AND FLAME Li, S., Davidson, D. F., Hanson, R. K. 2014; 161 (1): 16-22

  View details for DOI 10.1016/j.combustflame.2013.07.023

  View details for Web of Science ID 000327419300002

• Laser-absorption sensing of gas composition of products from coal gasification Conference on Micro- and Nanotechnology Sensors, Systems, and Applications VI Jeffries, J. B., Sur, R., Sun, K., Hanson, R. K. SPIE-INT SOC OPTICAL ENGINEERING. 2014

  View details for DOI 10.1117/12.2049788

  View details for Web of Science ID 000342426300017

• Shock tube study of methanol, methyl formate pyrolysis: CH3OH and CO time-history measurements COMBUSTION AND FLAME Ren, W., Dames, E., Hyland, D., Davidson, D. F., Hanson, R. K. 2013; 160 (12): 2669-2679

  View details for DOI 10.1016/j.combustflame.2013.06.016

  View details for Web of Science ID 000326061700004

• Analysis of calibration-free wavelength-scanned wavelength modulation spectroscopy for practical gas sensing using tunable diode lasers MEASUREMENT SCIENCE & TECHNOLOGY Sun, K., Chao, X., Sur, R., Goldenstein, C. S., Jeffries, J. B., Hanson, R. K. 2013; 24 (12)

  View details for DOI 10.1088/0957-0233/24/12/125203

  View details for Web of Science ID 000327597700022

• Two-color absorption spectroscopy strategy for measuring the column density and path average temperature of the absorbing species in nonuniform gases APPLIED OPTICS Goldenstein, C. S., Schultz, I. A., Jeffries, J. B., Hanson, R. K. 2013; 52 (33): 7950-7962

  Abstract

  A two-color absorption spectroscopy strategy has been developed for measuring the column density and density-weighted path-average temperature of the absorbing species in nonuniform gases. This strategy uses two transitions with strengths that scale nearly linearly with temperature. In addition, measured lineshapes are used to accurately model absorbance spectra. As a result, the column density and density-weighted path-average temperature of the absorbing species can be inferred from a comparison of signals measured across a nonuniform line of sight (LOS) with simulated signals calculated using a uniform LOS. This strategy is demonstrated with simulations of water-vapor absorption across a nonuniform LOS with temperature and composition gradients comparable to those in hydrogen-air diffusion flames. In this demonstration, both the column density and density-weighted path-average temperature of water vapor are recovered to within 0.5%.

  View details for DOI 10.1364/AO.52.007950

  View details for Web of Science ID 000327467200014

  View details for PubMedID 24513746

• Diode laser measurements of linestrength and temperature-dependent lineshape parameters of H2O-, CO2-, and N-2-perturbed H2O transitions near 2474 and 2482 nm JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Goldenstein, C. S., Jeffries, J. B., Hanson, R. K. 2013; 130: 100-111

  View details for DOI 10.1016/j.jqsrt.2013.06.008

  View details for Web of Science ID 000326482100007

• High-temperature laser absorption diagnostics for CH2O and CH3CHO and their application to shock tube kinetic studies COMBUSTION AND FLAME Wang, S., Davidson, D. F., Hanson, R. K. 2013; 160 (10): 1930-1938

  View details for DOI 10.1016/j.combustflame.2013.05.004

  View details for Web of Science ID 000322848200002

• Shock tube measurements of the rate constant for the reaction cyclohexene -> ethylene+1,3-butadiene CHEMICAL PHYSICS LETTERS Stranic, I., Davidson, D. F., Hanson, R. K. 2013; 584: 18-23

  View details for DOI 10.1016/j.cplett.2013.07.067

  View details for Web of Science ID 000324860000004

• Shock tube measurements and model development for morpholine pyrolysis and oxidation at high pressures COMBUSTION AND FLAME Li, S., Davidson, D. F., Hanson, R. K., Labbe, N. J., Westmoreland, P. R., Osswald, P., Kohse-Hoeinghaus, K. 2013; 160 (9): 1559-1571

  View details for DOI 10.1016/j.combustflame.2013.03.027

  View details for Web of Science ID 000321234600003

• Constrained reaction volume approach for studying chemical kinetics behind reflected shock waves COMBUSTION AND FLAME Hanson, R. K., Pang, G. A., Chakraborty, S., Ren, W., Wang, S., Davidson, D. F. 2013; 160 (9): 1550-1558

  View details for DOI 10.1016/j.combustflame.2013.03.026

  View details for Web of Science ID 000321234600002

• Shock Tube Measurements of the tert-Butanol + OH Reaction Rate and the tert-C4H8OH Radical ß-Scission Branching Ratio Using Isotopic Labeling. journal of physical chemistry. A Stranic, I., Pang, G. A., Hanson, R. K., Golden, D. M., Bowman, C. T. 2013; 117 (23): 4777-4784

  Abstract

  The overall rate constant for the reaction tert-butanol + OH → products was determined experimentally behind reflected shock waves by using (18)O-substituted tert-butanol (tert-butan(18)ol) and tert-butyl hydroperoxide (TBHP) as a fast source of (16)OH. The data were acquired from 900 to 1200 K near 1.1 atm and are best fit by the Arrhenius expression 1.24 × 10(-10) exp(-2501/T [K]) cm(3) molecule(-1) s(-1). The products of the title reaction include the tert-C4H8OH radical that is known to have two major β-scission decomposition channels, one of which produces OH radicals. Experiments with the isotopically labeled tert-butan(18)ol also lead to an experimental determination of the branching ratio for the β-scission pathways of the tert-C4H8OH radical by comparing the measured pseudo-first-order decay rate of (16)OH in the presence of excess tert-butan(16)ol with the respective decay rate of (16)OH in the presence of excess tert-butan(18)ol. The two decay rates of (16)OH as a result of reactions with the two forms of tert-butanol differ by approximately a factor of 5 due to the absence of (16)OH-producing pathways in experiments with tert-butan(18)ol. This indicates that 80% of the (16)OH molecules that react with tert-butan(16)ol will reproduce another (16)OH molecule through β-scission of the resulting tert-C4H8(16)OH radical. (16)OH mole fraction time histories were measured using narrow-line-width laser absorption near 307 nm. Measurements were performed at the line center of the R22(5.5) transition in the A-X(0,0) band of (16)OH, a transition that does not overlap with any absorption features of (18)OH, hence yielding a measurement of (16)OH mole fraction that is insensitive to any production of (18)OH.

  View details for DOI 10.1021/jp402176e

  View details for PubMedID 23683356

• Methane and ethylene time-history measurements in n-butane and n-heptane pyrolysis behind reflected shock waves FUEL Pyun, S. H., Ren, W., Davidson, D. F., Hanson, R. K. 2013; 108: 557-564

  View details for DOI 10.1016/j.fuel.2012.12.034

  View details for Web of Science ID 000317565100065

• Single- and dual-band collection toluene PLIF thermometry in supersonic flows EXPERIMENTS IN FLUIDS Miller, V. A., Gamba, M., Mungal, M. G., Hanson, R. K. 2013; 54 (6)

  View details for DOI 10.1007/s00348-013-1539-x

  View details for Web of Science ID 000321262300019

• A Shock Tube Study of H-2+OH -> H2O+H Using OH Laser Absorption INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Lam, K., Davidson, D. F., Hanson, R. K. 2013; 45 (6): 363-373

  View details for DOI 10.1002/kin.20771

  View details for Web of Science ID 000318176700003

• Multi-species measurements in 2-butanol and i-butanol pyrolysis behind reflected shock waves COMBUSTION AND FLAME Stranic, I., Pyun, S. H., Davidson, D. F., Hanson, R. K. 2013; 160 (6): 1012-1019

  View details for DOI 10.1016/j.combustflame.2013.01.015

  View details for Web of Science ID 000317701100003

• Fiber-coupled 2.7 mu m laser absorption sensor for CO2 in harsh combustion environments MEASUREMENT SCIENCE & TECHNOLOGY Spearrin, R. M., Goldenstein, C. S., Jeffries, J. B., Hanson, R. K. 2013; 24 (5)

  View details for DOI 10.1088/0957-0233/24/5/055107

  View details for Web of Science ID 000317585600019

• Shock tube measurements of methane, ethylene and carbon monoxide time-histories in DME pyrolysis COMBUSTION AND FLAME Pyun, S. H., Ren, W., Lam, K., Davidson, D. F., Hanson, R. K. 2013; 160 (4): 747-754

  View details for DOI 10.1016/j.combustflame.2012.12.004

  View details for Web of Science ID 000315762800001

• Real-time, in situ, continuous monitoring of CO in a pulverized-coal-fired power plant with a 2.3 mu m laser absorption sensor APPLIED PHYSICS B-LASERS AND OPTICS Chao, X., Jeffries, J. B., Hanson, R. K. 2013; 110 (3): 359-365

  View details for DOI 10.1007/s00340-012-5262-8

  View details for Web of Science ID 000316198700013

• Wavelength modulation diode laser absorption spectroscopy for high-pressure gas sensing APPLIED PHYSICS B-LASERS AND OPTICS Sun, K., Chao, X., Sur, R., Jeffries, J. B., Hanson, R. K. 2013; 110 (4): 497-508

  View details for DOI 10.1007/s00340-012-5286-0

  View details for Web of Science ID 000316339600010

• TDL absorption sensors for gas temperature and concentrations in a high-pressure entrained-flow coal gasifier PROCEEDINGS OF THE COMBUSTION INSTITUTE Sun, K., Sur, R., Chao, X., Jeffries, J. B., Hanson, R. K., Pummill, R. J., Whitty, K. J. 2013; 34: 3593-3601

  View details for DOI 10.1016/j.proci.2012.05.018

  View details for Web of Science ID 000313131800193

• In situ Measurements of Syngas Temperature, Water Vapor and Carbon Dioxide in an Engineering Scale Liquefied Coal Gasifier 8th U.S. National Combustion Meeting Sun, K., Sur, R., Jeffries, J. B., Hanson, R. K., Clark, T., Anthony, J., Machovec, S., Northington, J. 2013
• Monitoring temperature in high enthalpy arc-heated plasma flows using tunable diode laser absorption spectroscopy 44th AIAA Plasmadynamics and Lasers Conference Martin, M. N., Chang, L. S., Jeffries, J. B., Hanson, R. K., Nawaz, A., Taunk, J., Driver, D. M., Raiche, G. 2013

  View details for DOI 10.2514/6.2013-2761

• Laser measurements of bacterial endospore destruction from shock waves Conference on Micro/Nano Materials, Devices, and Systems Lappas, P. P., McCartt, A. D., Gates, S. D., Jeffries, J. B., Hanson, R. K. SPIE-INT SOC OPTICAL ENGINEERING. 2013

  View details for DOI 10.1117/12.2033936

  View details for Web of Science ID 000333057400028

• TDLAS-based in situ Monitoring of Syngas Composition from an Oxygen-Blown, Down-Fired Coal Gasifier 8th U.S. National Combustion Meeting Sur, R., Sun, K., Jeffries, J. B., Hanson, R. K., Pummill, R. S., Whitty, K. 2013
• Shock Tube Study of Ethylamine Pyrolysis and Oxidation 8th U.S. National Combustion Meeting Li, S., Davidson, D. F., Hanson, R. K., Moshammer, K., Kohse-Höinghaus, K. 2013
• Combustion Kinetic Modeling using Multispecies Time-histories in Shock Tube Pyrolisis and Oxidation of 3-pentanone 8th U.S. National Combustion Meeting Lam, K. Y., Davidson, D. F., Hanson, R. K. 2013
• Diode Laser Measurements of Temperature and H2O for Monitoring Pulse Detonation Combustor Performance 24th International Colloquium on Dynamics of Explosive and Reactive Systems Goldenstein, C. S., Schultz, I. A., Spearin, R. M., Jeffries, J. B., Hanson, R. K. 2013
• Ignition Delay Times of Very-Low-Vapor-Pressure Biodiesel Surrogate behind Reflected Shock Waves 8th U.S. National Combustion Meeting Campbell, M. A., Davidson, D. F., Hanson, R. K. 2013
• Thermal Decomposition of C3-C5 Ethyl Esters: CO CO2 and H2O Time-history Measurements behind Reflected Shock Waves 8th U.S. National Combustion Meeting Ren, W., Spearrin, R. M., Davidson, D. F., Hanson, R. K. 2013
• On the rate constants of OH + HO2 and HO2 + HO2: A comprehensive study of H2O2 thermal decomposition using multi-species laser absorption PROCEEDINGS OF THE COMBUSTION INSTITUTE Hong, Z., Lam, K., Sur, R., Wang, S., Davidson, D. F., Hanson, R. K. 2013; 34: 565-571

  View details for DOI 10.1016/j.proci.2012.06.108

  View details for Web of Science ID 000313125400050

• Multi-species time-history measurements during n-hexadecane oxidation behind reflected shock waves PROCEEDINGS OF THE COMBUSTION INSTITUTE Haylett, D. R., Davidson, D. F., Cook, R. D., Hong, Z., Ren, W., Pyun, S. H., Hanson, R. K. 2013; 34: 369-376

  View details for DOI 10.1016/j.proci.2012.06.014

  View details for Web of Science ID 000313125400028

• Multi-species time-history measurements during high-temperature acetone and 2-butanone pyrolysis PROCEEDINGS OF THE COMBUSTION INSTITUTE Lam, K., Ren, W., Pyun, S. H., Farooq, A., Davidson, D. F., Hanson, R. K. 2013; 34: 607-615

  View details for DOI 10.1016/j.proci.2012.06.009

  View details for Web of Science ID 000313125400055

• Development of laser absorption techniques for real-time, in-situ dual-species monitoring (NO/NH3, CO/O-2) in combustion exhaust PROCEEDINGS OF THE COMBUSTION INSTITUTE Chao, X., Jeffries, J. B., Hanson, R. K. 2013; 34: 3583-3592

  View details for DOI 10.1016/j.proci.2012.05.024

  View details for Web of Science ID 000313131800192

• Fuel and Ethylene Measurements during n-dodecane, methylcyclohexane, and iso-cetane pyrolysis in shock tubes FUEL MacDonald, M. E., Ren, W., Zhu, Y., Davidson, D. F., Hanson, R. K. 2013; 103: 1060-1068

  View details for DOI 10.1016/j.fuel.2012.09.068

  View details for Web of Science ID 000311932200132

• Formulation of an RP-1 pyrolysis surrogate from shock tube measurements of fuel and ethylene time histories FUEL MacDonald, M. E., Davidson, D. F., Hanson, R. K., Pitz, W. J., Mehl, M., Westbrook, C. K. 2013; 103: 1051-1059

  View details for DOI 10.1016/j.fuel.2012.10.008

  View details for Web of Science ID 000311932200131

• Ignition delay times of methyl oleate and methyl linoleate behind reflected shock waves PROCEEDINGS OF THE COMBUSTION INSTITUTE Campbell, M. F., Davidson, D. F., Hanson, R. K., Westbrook, C. K. 2013; 34: 419-425

  View details for DOI 10.1016/j.proci.2012.05.084

  View details for Web of Science ID 000313125400034

• Shock tube/laser absorption studies of the decomposition of methyl formate PROCEEDINGS OF THE COMBUSTION INSTITUTE Ren, W., Lam, K., Pyun, S. H., Farooq, A., Davidson, D. F., Hanson, R. K. 2013; 34: 453-461

  View details for DOI 10.1016/j.proci.2012.05.071

  View details for Web of Science ID 000313125400038

• High-Temperature Measurements of the Reactions of OH with Small Methyl Esters: Methyl Formate, Methyl Acetate, Methyl Propanoate, and Methyl Butanoate JOURNAL OF PHYSICAL CHEMISTRY A Lam, K., Davidson, D. F., Hanson, R. K. 2012; 116 (50): 12229-12241

  Abstract

  The overall rate constants for the reactions of hydroxyl radicals (OH) with four small methyl esters, namely methyl formate (CH(3)OCHO), methyl acetate (CH(3)OC(O)CH(3)), methyl propanoate (CH(3)OC(O)C(2)H(5)), and methyl butanoate (CH(3)OC(O)C(3)H(7)), were investigated behind reflected shock waves using UV laser absorption of OH radicals near 306.69 nm. Test gas mixtures of individual methyl esters and tert-butyl hydroperoxide (TBHP), a fast source of OH at elevated temperatures, diluted in argon were shock-heated to temperatures spanning from 876 to 1371 K at pressures near 1.5 atm. The overall rate constants were determined by matching the measured OH time-histories with the computed profiles from the comprehensive chemical kinetic mechanisms of Dooley et al. (2010) and Dooley et al. (2008), which were originally developed for the oxidation of methyl formate and methyl butanoate, respectively. These measured values can be expressed in Arrhenius form as k(CH(3)OCHO+OH) = 2.56 × 10(13) exp(-2026/T) cm(3) mol(-1) s(-1), k(CH(3)OC(O)CH(3)+OH) = 3.59 × 10(13) exp(-2438/T) cm(3) mol(-1) s(-1), k(CH(3)OC(O)C(2)H(5)+OH) = 6.65 × 10(13) exp(-2539/T) cm(3) mol(-1) s(-1), and k(CH(3)OC(O)C(3)H(7)+OH) = 1.13 × 10(14) exp(-2515/T) cm(3) mol(-1) s(-1) over the temperature ranges studied. Detailed error analyses were performed to estimate the overall uncertainties of these reactions, and the estimated (2σ) uncertainties were found to be ±29% at 913 K and ±18% at 1289 K for k(CH(3)OCHO+OH), ± 29% at 930 K and ±17% at 1299 K for k(CH(3)OC(O)CH(3)+OH), ± 25% at 909 K and ±17% at 1341 K for k(CH(3)OC(O)C2H(5)+OH), and ±24% at 925 K and ±16% at 1320 K for k(CH(3)OC(O)C(3)H(7)+OH). We believe these are the first direct high-temperature rate constant measurements for the reactions of OH with these small methyl esters. These measured rate constants were also compared with the estimated values employed in different comprehensive kinetic mechanisms. Additionally, the structure-activity relationship from Kwok and Atkinson (1995) was used to estimate these four rate constants, and the estimations from this group-additivity model are in good agreement with the measurements (within ~25%) at the present experimental conditions.

  View details for DOI 10.1021/jp310256j

  View details for Web of Science ID 000312519800005

  View details for PubMedID 23194350

• Shock tube studies of methyl butanoate pyrolysis with relevance to biodiesel COMBUSTION AND FLAME Farooq, A., Ren, W., Lam, K. Y., Davidson, D. F., Hanson, R. K., Westbrook, C. K. 2012; 159 (11): 3235-3241

  View details for DOI 10.1016/j.combustflame.2012.05.013

  View details for Web of Science ID 000309622900001

• Second-generation aerosol shock tube: an improved design SHOCK WAVES Haylett, D. R., Davidson, D. F., Hanson, R. K. 2012; 22 (6): 483-493

  View details for DOI 10.1007/s00193-012-0383-x

  View details for Web of Science ID 000310326900001

• Multi-species measurements in 1-butanol pyrolysis behind reflected shock waves COMBUSTION AND FLAME Stranic, I., Pyun, S. H., Davidson, D. F., Hanson, R. K. 2012; 159 (11): 3242-3250

  View details for DOI 10.1016/j.combustflame.2012.06.005

  View details for Web of Science ID 000309622900002

• Shock tube measurements of 3-pentanone pyrolysis and oxidation COMBUSTION AND FLAME Lam, K., Ren, W., Hong, Z., Davidson, D. F., Hanson, R. K. 2012; 159 (11): 3251-3263

  View details for DOI 10.1016/j.combustflame.2012.06.012

  View details for Web of Science ID 000309622900003

• Experimental Determination of the High-Temperature Rate Constant for the Reaction of OH with sec-Butanol JOURNAL OF PHYSICAL CHEMISTRY A Pang, G. A., Hanson, R. K., Golden, D. M., Bowman, C. T. 2012; 116 (39): 9607-9613

  Abstract

  The overall rate constant for the reaction of OH with sec-butanol [CH(3)CH(OH)CH(2)CH(3)] was determined from measurements of the near-first-order OH decay in shock-heated mixtures of tert-butylhydroperoxide (as a fast source of OH) with sec-butanol in excess. Three kinetic mechanisms from the literature describing sec-butanol combustion were used to examine the sensitivity of the rate constant determination to secondary kinetics. The overall rate constant determined can be described by the Arrhenius expression 6.97 × 10(-11) exp(-1550/T[K]) cm(3) molecule(-1) s(-1), valid over the temperature range of 888-1178 K. Uncertainty bounds of ±30% were found to adequately account for the uncertainty in secondary kinetics. To our knowledge, the current data represent the first efforts toward an experimentally determined rate constant for the overall reaction of OH with sec-butanol at combustion-relevant temperatures. A rate constant predicted using a structure-activity relationship from the literature was compared to the current data and previous rate constant measurements for the title reaction at atmospheric-relevant temperatures. The structure-activity relationship was found to be unable to correctly predict the measured rate constant at all temperatures where experimental data exist. We found that the three-parameter fit of 4.95 × 10(-20)T(2.66) exp(+1123/T[K]) cm(3) molecule(-1) s(-1) better describes the overall rate constant for the reaction of OH with sec-butanol from 263 to 1178 K.

  View details for DOI 10.1021/jp306977e

  View details for Web of Science ID 000309375300002

  View details for PubMedID 22946741

• A shock tube study of the rate constants of HO2 and CH3 reactions COMBUSTION AND FLAME Hong, Z., Davidson, D. F., Lam, K., Hanson, R. K. 2012; 159 (10): 3007-3013

  View details for DOI 10.1016/j.combustflame.2012.04.009

  View details for Web of Science ID 000308619100002

• High-Temperature Measurements of the Reactions of OH with a Series of Ketones: Acetone, 2-Butanone, 3-Pentanone, and 2-Pentanone JOURNAL OF PHYSICAL CHEMISTRY A Lam, K., Davidson, D. F., Hanson, R. K. 2012; 116 (23): 5549-5559

  Abstract

  The overall rate constants for the reactions of hydroxyl radicals (OH) with a series of ketones, namely, acetone (CH(3)COCH(3)), 2-butanone (C(2)H(5)COCH(3)), 3-pentanone (C(2)H(5)COC(2)H(5)), and 2-pentanone (C(3)H(7)COCH(3)), were studied behind reflected shock waves over the temperature range of 870-1360 K at pressures of 1-2 atm. OH radicals were produced by rapid thermal decomposition of the OH precursor tert-butyl hydroperoxide (TBHP) and were monitored by the narrow line width ring dye laser absorption of the well-characterized R(1)(5) line in the OH A-X (0, 0) band near 306.69 nm. The overall rate constants were inferred by comparing the measured OH time histories with the simulated profiles from the detailed mechanisms of Pichon et al. (2009) and Serinyel et al. (2010). These measured values can be expressed in Arrhenius form as k(CH3COCH3+OH) = 3.30 × 10(13) exp(-2437/T) cm(3) mol(-1) s(-1), k(C2H5COCH3+OH )= 6.35 × 10(13) exp(-2270/T) cm(3) mol(-1) s(-1), k(C2H5COC2H5+OH) = 9.29 × 10(13) exp(-2361/T) cm(3) mol(-1) s(-1), and k(C3H7COCH3+OH) = 7.06 × 10(13) exp(-2020/T) cm(3) mol(-1) s(-1). The measured rate constant for the acetone + OH reaction from the current study is consistent with three previous experimental studies from Bott and Cohen (1991), Vasudevan et al. (2005), and Srinivasan et al. (2007), within ±20%. Here, we also present the first direct high-temperature rate constant measurements of 2-butanone + OH, 3-pentanone + OH, and 2-pentanone + OH reactions. The measured values for the 2-butanone + OH reaction are in close accord with the theoretical calculation from Zhou et al. (2011), and the measured values for the 3-pentanone + OH reaction are in excellent agreement with the estimates (by analogy with the H-atom abstraction rate constants from alkanes) from Serinyel et al. Finally, the structure-activity relationship from Kwok and Atkinson (1995) was used to estimate these four rate constants, and the estimated values from this group-additivity model show good agreement with the measurements (within ~25%) at the present experimental conditions.

  View details for DOI 10.1021/jp303853h

  View details for Web of Science ID 000305355900004

  View details for PubMedID 22607582

• CO concentration and temperature sensor for combustion gases using quantum-cascade laser absorption near 4.7 mu m APPLIED PHYSICS B-LASERS AND OPTICS Ren, W., Farooq, A., Davidson, D. F., Hanson, R. K. 2012; 107 (3): 849-860

  View details for DOI 10.1007/s00340-012-5046-1

  View details for Web of Science ID 000305226700046

• IR laser absorption diagnostic for C2H4 in shock tube kinetics studies INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Ren, W., Davidson, D. F., Hanson, R. K. 2012; 44 (6): 423-432

  View details for DOI 10.1002/kin.20599

  View details for Web of Science ID 000303042600007

• High-Temperature Rate Constant Determination for the Reaction of OH with iso-Butanol JOURNAL OF PHYSICAL CHEMISTRY A Pang, G. A., Hanson, R. K., Golden, D. M., Bowman, C. T. 2012; 116 (19): 4720-4725

  Abstract

  This work presents the first direct experimental study of the rate constant for the reaction of OH with iso-butanol (2-methyl-1-propanol) at temperatures from 907 to 1147 K at near-atmospheric pressures. OH time-histories were measured behind reflected shock waves using a narrow-linewidth laser absorption method during reactions of dilute mixtures of tert-butylhydroperoxide (as a fast source of OH) with iso-butanol in excess. The title reaction's overall rate constant (OH + iso-butanol →(k(overall)) all products) minus the rate constant for the β-radical-producing channel (OH + iso-butanol →(k(β)) 1-hydroxy-2-methyl-prop-2-yl radical + H(2)O) was determined from the pseudo-first-order rate of OH decay. A two-parameter Arrhenius fit of the experimentally determined rate constant in the current temperature range yields the expression (k(overall) - k(β)) = 1.84 × 10(-10) exp(-2350/T[K]) cm(3) molecule(-1) s(-1). A recommendation for the overall rate constant, including k(β), is made, and comparisons of the results to rate constant recommendations from the literature are discussed.

  View details for DOI 10.1021/jp302719j

  View details for Web of Science ID 000304073200005

  View details for PubMedID 22515280

• Multispecies laser measurements of n-butanol pyrolysis behind reflected shock waves INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Cook, R. D., Davidson, D. F., Hanson, R. K. 2012; 44 (5): 303-311

  View details for DOI 10.1002/kin.20713

  View details for Web of Science ID 000302072400003

• Rate Constant Measurements for the Overall Reaction of OH+1-Butanol -> Products from 900 to 1200 K JOURNAL OF PHYSICAL CHEMISTRY A Pang, G. A., Hanson, R. K., Golden, D. M., Bowman, C. T. 2012; 116 (10): 2475-2483

  Abstract

  The rate constant for the overall reaction OH + 1-butanol → products was determined in the temperature range 900 to 1200 K from measurements of OH concentration time histories in reflected shock wave experiments of tert-butyl hydroperoxide (TBHP) as a fast source of OH radicals with 1-butanol in excess. Narrow-linewidth laser absorption was employed for the quantitative OH concentration measurement. A detailed kinetic mechanism was constructed that includes updated rate constants for 1-butanol and TBHP kinetics that influence the near-first-order OH concentration decay under the present experimental conditions, and this mechanism was used to facilitate the rate constant determination. The current work improves upon previous experimental studies of the title rate constant by utilizing a rigorously generated kinetic model to describe secondary reactions. Additionally, the current work extends the temperature range of experimental data in the literature for the title reaction under combustion-relevant conditions, presenting the first measurements from 900 to 1000 K. Over the entire temperature range studied, the overall rate constant can be expressed in Arrhenius form as 3.24 × 10(-10) exp(-2505/T [K]) cm(3) molecule(-1) s(-1). The influence of secondary reactions on the overall OH decay rate is discussed, and a detailed uncertainty analysis is performed yielding an overall uncertainty in the measured rate constant of ±20% at 1197 K and ±23% at 925 K. The results are compared with previous experimental and theoretical studies on the rate constant for the title reaction and reasonable agreement is found when the earlier experimental data were reinterpreted.

  View details for DOI 10.1021/jp211885p

  View details for Web of Science ID 000301509400010

  View details for PubMedID 22352920

• Determination of fluorescence and non-radiative de-excitation rates of excited 3-pentanone at low pressures Spring Meeting of the German-Physical-Society Cheung, B. H., Hanson, R. K. SPRINGER. 2012: 741–53

  View details for DOI 10.1007/s00340-011-4817-4

  View details for Web of Science ID 000300733900033

• 3-pentanone fluorescence yield measurements and modeling at elevated temperatures and pressures Spring Meeting of the German-Physical-Society Cheung, B. H., Hanson, R. K. SPRINGER. 2012: 755–68

  View details for DOI 10.1007/s00340-012-4901-4

  View details for Web of Science ID 000300733900034

• Wavelength-modulation-spectroscopy for real-time, in situ NO detection in combustion gases with a 5.2 mu m quantum-cascade laser APPLIED PHYSICS B-LASERS AND OPTICS Chao, X., Jeffries, J. B., Hanson, R. K. 2012; 106 (4): 987-997

  View details for DOI 10.1007/s00340-011-4839-y

  View details for Web of Science ID 000302946600032

• In situ optical measurements of bacterial endospore breakdown in a shock tube Spring Meeting of the German-Physical-Society McCartt, A. D., Gates, S., Lappas, P., Jeffries, J. B., Hanson, R. K. SPRINGER. 2012: 769–74

  View details for DOI 10.1007/s00340-011-4844-1

  View details for Web of Science ID 000300733900035

• Ignition delay times of low-vapor-pressure fuels measured using an aerosol shock tube COMBUSTION AND FLAME Haylett, D. R., Davidson, D. F., Hanson, R. K. 2012; 159 (2): 552-561

  View details for DOI 10.1016/j.combustflame.2011.08.021

  View details for Web of Science ID 000299068200009

• Shock tube measurements of ignition delay times for the butanol isomers COMBUSTION AND FLAME Stranic, I., Chase, D. P., Harmon, J. T., Yang, S., Davidson, D. F., Hanson, R. K. 2012; 159 (2): 516-527

  View details for DOI 10.1016/j.combustflame.2011.08.014

  View details for Web of Science ID 000299068200006

• Boundary Layer Effects Behind Incident and Reflected Shock Waves in a Shock Tube 28th International Symposium on Shock Waves Li, S., Ren, W., Davidson, D. F., Hanson, R. K. 2012

  View details for DOI 10.1007/978-3-642-25685-1_71

• Measurement of Non-uniform Temperature Distributions Using Line-of-sight Absorption Spectroscopy 44th AIAA Aerospace Sciences Meeting and Exhibit Liu, X., Jeffries, J. B., Hanson, R. K. 2012

  View details for DOI 10.2514/6.2006-834

• Combustion characteristics of an inlet/supersonic combustor model 50th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition Gamba, M., Miller, V., Mungal, G. M., Hanson, R. K. 2012

  View details for DOI 10.2514/6.2012-612

• Cinematographic PLIF imaging of Toluene using CW excitation 16th International Symposium on Applications of Laser Techniques to Fluid Mechanics Gamba, M., Hanson, R. K. 2012
• OH PLIF imaging of the reaction zone in combusting transverse jets in supersonic crossflow 16th International Symposium on Applications of Laser Techniques to Fluid Mechanics Gamba, M., Mungal, M. G., Hanson, R. K. 2012
• Toluene PLIF Thermometry in Supersonic Flows 42nd AIAA Fluid Dynamics Conference and Exhibit Miller, V., Gamba, M., Mungal, M. G., Hanson, R. K. 2012

  View details for DOI 10.2514/6.2012-2828

• Experimental Database for Development of a HiFiRE JP-7 Surrogate Fuel Mechanism 50th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition Davidson, D. F., Ren, W., Hanson, R. K. 2012

  View details for DOI 10.2514/6.2012-620

• Hypervelocity Testing of a Dual-mode Scramjet 50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition Smayda, M. G., Vogel, P. D., Schultz, I. A., Hanson, R. K., Foelsche, R., Tsai, C. Y., Cresci, D., Goyne, C. P. 2012

  View details for DOI 10.2514/6.2012-481

• TDL Absorption Sensor for Temperature Measurements in High-Pressure and High-Temperature Gases 50th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition Goldenstein, C. S., Schultz, I. A., Jeffries, J. B., Hanson, R. K. 2012

  View details for DOI 10.2514/6.2012-1061

• A Second-Generation Aerosol Shock Tube and Its Use in Studying Ignition Delay Times of Large Biodiesel Surrogates 28th International Symposium on Shock Waves Campbell, M. F., Davidson, D. F., Hanson, R. K. 2012

  View details for DOI 10.1007/978-3-642-25688-2_79

• TDL Absorption Sensor for In Situ Determination of Combustion Progress in Scramjet Ground Testing 28th Aerodynamic Measurement Technology, Ground Testing, and Flight Testing Conference Schultz, I. A., Goldenstein, C. S., Jeffries, J. B., Hanson, R. K., Rockwell Jr., R. D., Goyne, C. P. 2012

  View details for DOI 10.2514/6.2012-2654

• OH PLIF of the Reaction Zone in Combusting Transverse Jets in Supersonic Crossflow 16th Int. Symp. On Applications of Laser Techniques to Fluid Mechanics Gamba, M., Mungal, M. G., Hanson, R. K. 2012
• Multi-species Measurements of n-Butanol Pyrolysis Behind Reflected Shock Waves 28th International Symposium on Shock Waves Cook, R. D., Davidson, D. F., Hanson, R. K. 2012: 451–56

  View details for DOI 10.1007/978-3-642-25688-2_69

• Experimental Database for Development of a Hi Fire JP-7 Surrogate Fuel Mechanism 50th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition Davidson, D. F., Ren, W., Hanson, R. K., 2012

  View details for DOI 10.2514/6.2012-620

• Two-camera Dual-band Collection Toluene PLIF Thermometry in Supersonic Flows 16th International Symposium on Applications of Laser Techniques to Fluid Mechanics Miller, V. A., Gamba, M., Mungal, M. G., Hanson, R. K. 2012
• Development of laser absorption techniques for real-time, in-situ dual-species monitoring (NO/NH3, CO/O2) in combustion exhaust Proceedings of the Combustion Institute Chao, X., Jeffries, J. B., Hanson, R. K. 2012: 3583–92

  View details for DOI 10.1016/j.proci.2012.05.024

• Supersonic Mass-Flux Measurements via Tunable Diode Laser Absorption and Nonuniform Flow Modeling 49th AIAA Aerospace Sciences Meeting / New Horizons Forum and Aerospace Exposition Chang, L. S., Strand, C. L., Jeffries, J. B., Hanson, R. K., Diskin, G. S., Gaffney, R. L., Capriotti, D. P. AMER INST AERONAUT ASTRONAUT. 2011: 2783–91

  View details for DOI 10.2514/1.J051118

  View details for Web of Science ID 000297968200017

• H2O temperature sensor for low-pressure flames using tunable diode laser absorption near 2.9 mu m MEASUREMENT SCIENCE & TECHNOLOGY Li, S., Farooq, A., Hanson, R. K. 2011; 22 (12)

  View details for DOI 10.1088/0957-0233/22/12/125301

  View details for Web of Science ID 000298148200023

• Near-wall imaging using toluene-based planar laser-induced fluorescence in shock tube flow SHOCK WAVES Yoo, J., Mitchell, D., Davidson, D. F., Hanson, R. K. 2011; 21 (6): 523-532

  View details for DOI 10.1007/s00193-011-0338-7

  View details for Web of Science ID 000296472000004

• Broad-linewidth laser absorption measurements of oxygen between 211 and 235 nm at high temperatures JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Hong, Z., Lam, K., Davidson, D. F., Hanson, R. K. 2011; 112 (17): 2698-2703

  View details for DOI 10.1016/j.jqsrt.2011.08.003

  View details for Web of Science ID 000296165000005

• Measurement of Water Vapor Levels for Investigating Vitiation Effects on Scramjet Performance JOURNAL OF PROPULSION AND POWER Rockwell, R. D., Goyne, C. P., Haw, W., McDaniel, J. C., Goldenstein, C. S., Schultz, I. A., Jeffries, J. B., Hanson, R. K. 2011; 27 (6): 1315-1317

  View details for DOI 10.2514/1.B34270

  View details for Web of Science ID 000297141100019

• Extension of Bacillus endospore gas dynamic heating studies to multiple species and test conditions JOURNAL OF APPLIED MICROBIOLOGY Gates, S. D., McCartt, A. D., Jeffries, J. B., Hanson, R. K., Hokama, L. A., Mortelmans, K. E. 2011; 111 (4): 925-931

  Abstract

  Shock wave-induced damage to a variety of Bacillus endospore species is studied for a wide range of postshock temperatures and test times in oxidative and non-oxidative gas environments.Bacillus atrophaeus and Bacillus subtilis endospores are nebulized into an aqueous aerosol, loaded into the Stanford aerosol shock tube (SAST) and subjected to shock waves of controlled strength. Endospores experience uniform test temperatures between 500 and 1000 K and pressures ranging from 2 to 7 atm, for either a short test time (∼2·5 ms) or a relatively long test time (∼45 ms). During this process, the bioaerosol is observed using in situ laser absorption and scattering diagnostics. Additionally, shock-treated samples are extracted for ex situ analysis including viability plating and flow cytometry. For short test times, results are consistent with previous studies; all endospore species begin to lose the ability to form colonies when shock-heated to temperatures above 500 K, while significant breakdown in morphology is observed for postshock temperatures above 700 K. Oxidative bath gases did not affect viability losses or morphological breakdown rates. Experiments with extended postshock test time showed increased viability loss with minimal morphological damage for shocks between 600 and 700 K.Genetic differences between B. subtilis and B. atrophaeus endospores do not confer noticeable gains in resistance to shock heating. Oxidative environments do not exacerbate shock-induced damage to endospores. Extended test time experiments reinforce our hypothesis that a temperature/time-dependent inactivation mechanism that does not involve morphological breakdown exists at low-to-moderate postshock temperatures.The methodology and experiments described in this paper extend the study of the interactions of endospores with shock/blast waves to new species and environmental conditions.

  View details for DOI 10.1111/j.1365-2672.2011.05090.x

  View details for Web of Science ID 000295429200014

  View details for PubMedID 21707883

• Decomposition Measurements of RP-1, RP-2, JP-7, n-Dodecane, and Tetrahydroquinoline in Shock Tubes 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit MacDonald, M. E., Davidson, D. F., Hanson, R. K. AMER INST AERONAUT ASTRONAUT. 2011: 981–89

  View details for DOI 10.2514/1.B34204

  View details for Web of Science ID 000295705700007

• A comparative study of the oxidation characteristics of cyclohexane, methylcyclohexane, and n-butylcyclohexane at high temperatures COMBUSTION AND FLAME Hong, Z., Lam, K., Davidson, D. F., Hanson, R. K. 2011; 158 (8): 1456-1468

  View details for DOI 10.1016/j.combustflame.2010.12.019

  View details for Web of Science ID 000292074900003

• An improved H-2/O-2 mechanism based on recent shock tube/laser absorption measurements COMBUSTION AND FLAME Hong, Z., Davidson, D. F., Hanson, R. K. 2011; 158 (4): 633-644

  View details for DOI 10.1016/j.combustflame.2010.10.002

  View details for Web of Science ID 000288291000005

• Shock tube measurements of species time-histories in monomethyl hydrazine pyrolysis COMBUSTION AND FLAME Cook, R. D., Pyun, S. H., Cho, J., Davidson, D. F., Hanson, R. K. 2011; 158 (4): 790-795

  View details for DOI 10.1016/j.combustflame.2011.01.001

  View details for Web of Science ID 000288291000016

• Reactions of OH with Butene Isomers: Measurements of the Overall Rates and a Theoretical Study JOURNAL OF PHYSICAL CHEMISTRY A Vasu, S. S., Lam K Huynh, K. H., Davidson, D. F., Hanson, R. K., Golden, D. M. 2011; 115 (12): 2549-2556

  View details for DOI 10.1021/jp112294h

  View details for Web of Science ID 000288644600013

• Shock Tube Study of Syngas Ignition in Rich CO2 Mixtures and Determination of the Rate of H + O-2 + CO2 -> HO2 + CO2 ENERGY & FUELS Vasu, S. S., Davidson, D. F., Hanson, R. K. 2011; 25 (3): 990-997

  View details for DOI 10.1021/ef1015928

  View details for Web of Science ID 000289613300016

• Mid-infrared laser-absorption diagnostic for vapor-phase fuel mole fraction and liquid fuel film thickness APPLIED PHYSICS B-LASERS AND OPTICS Porter, J. M., Jeffries, J. B., Hanson, R. K. 2011; 102 (2): 345-355

  View details for DOI 10.1007/s00340-010-3942-9

  View details for Web of Science ID 000287200800009

• Interference-free mid-IR laser absorption detection of methane MEASUREMENT SCIENCE & TECHNOLOGY Pyun, S. H., Cho, J., Davidson, D. F., Hanson, R. K. 2011; 22 (2)

  View details for DOI 10.1088/0957-0233/22/2/025303

  View details for Web of Science ID 000286311200031

• A new shock tube study of the H + O-2 -> OH plus O reaction rate using tunable diode laser absorption of H2O near 2.5 mu m PROCEEDINGS OF THE COMBUSTION INSTITUTE Hong, Z., Davidson, D. F., Barbour, E. A., Hanson, R. K. 2011; 33: 309-316

  View details for DOI 10.1016/j.proci.2010.05.101

  View details for Web of Science ID 000285780200025

• Fuel and Ethylene Measurements during n-Dodecane, Methylcyclohexane, and iso-Cetane Decomposition in Shock Tubes 47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit MacDonald, M. E., Ren, W., Davidson, D. F., Hanson, R. K. 2011

  View details for DOI 10.2514/6.2011-5854

• Supersonic Mass Flux Measurements via Tunable Diode Laser Absorption and Non-Uniform Flow Modeling 49th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition Chang, L. S., Strand, C. L., Jeffries, J. B., Hanson, R. K., Diskin, G. S., Gaffney, R. L., Capriotti, D. P. 2011

  View details for DOI 10.2514/6.2011-1093

• Tunable Diode Laser Absorption Sensor for Measurements of Temperature and Water Concentration in Supersonic Flows 49th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition Goldenstein, C. S., Schultz, I. A., Jeffries, J. B., Hanson, R. K. 2011

  View details for DOI 10.2514/6.2011-1094

• Thermometry and Velocimetry in Supersonic Flows via Scanned Wavelength-Modulation Absorption Spectroscopy 47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Strand, C. L., Hanson, R. K. 2011

  View details for DOI 10.2514/6.2011-5600

• Toluene Laser-induced Fluorescence Imaging of Compressible Flows in an Expansion Tube 64th Annual Meeting of the APS Division of Fluid Dynamics Miller, V. A., Gamba, M., Mungal, M. G., Hanson, R. K., Mohri, K., Schulz, C. 2011
• RP-Fuel and Surrogate Pyrolysis: Multi-species Time-history Measurements using Shock Tube/Laser Absorption JANNAF Meeting Davidson, D. F., MacDonald, M. E., Hanson, R. K. 2011
• MMH Pyrolysis and Oxidation: Species Time-History Measurements behind Reflected Shock Waves 23rd ICDERS Cook, R. D., Davidson, D. F., Pyun, S. H., Hanson, R. K. 2011
• Development of a Model Scramjet Combustor 49th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition Miller, V. A., Gamba, M., Mungal, M. G., Hanson, R. K. 2011

  View details for DOI 10.2514/6.2011-320

• Temperature Measurements in an Entrained Flow, Slagging, Coal Gasifier using Laser Absorption of Water Vapor 28th Annual International Pittsburgh Coal Conference Sun, K., Sur, R., Chao, X., Jeffries, J. B., Hanson, R. K., Pummill, R. J., Wagner, D. A., Whitty, K. J., Steele, R. C. 2011
• Shock Tube Measurements of Ethylene Concentration Time-histories during Ethylene, n-Heptane and methylcyclohexane Pyrolysis 7th U.S. National Combustion Meeting Ren, W., Davidson, D. F., Hanson, R. K. 2011
• Temperature Time-history Measurements in a Shock Tube using Diode Laser Absorption of CO2 near 2.7 μm 23rd ICDERS Ren, W., Li, S., Davidson, D. F., Hanson, R. K. 2011
• Ignition and Near-Wall Burning in Transverse Hydrogen Jets in Supersonic Crossflow 49th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition Gamba, M., Mungal, M. G., Hanson, R. K. 2011

  View details for DOI 10.2514/6.2011-319

• Shock Tube Measurements of Ignition Delay Times and OH and H2O Species Time-histories in 3-pentanone/O2 /Ar Mixtures 7th International Conference on Chemical Kinetics Lam, K. Y., Hong, Z., Durrstein, S. W., Davidson, D. F., Hanson, R. K., Schulz, C. 2011
• Ignition and Flame Structure in a Compact Inlet/Scramjet Combustor 17th AIAA International Space Planes and Hypersonic Systems and Technologies Conference Miller, V. A., Mungal, M. G., Hanson, R. K. 2011

  View details for DOI 10.2514/6.2011-2366

• High-temperature Reactions of OH with Linear Alkenes up to C4 7th International Conference on Chemical Kinetics Harper, M. R., Green, W. H., Van Geem, K. M., Weber, B. W., Sung, C., Stranic, I., Davidson, D. F., Hanson, R. K. 2011
• Combustion of the Butanol Isomers: Reaction Pathways at Elevated Pressures from Low to High Temperatures 7th International Conference on Chemical Kinetics Harper, M. R., Green, W. H., Van Geem, K. M., Weber, B. W., Hanson, R. K. 2011
• Shock Tube/Laser Absorption Measurements of JP-8 Ignition Delay Times and Multi-species Time-histories JANNAF Meeting Davidson, D. F., Li, S., Lam, K. Y., Stranic, I., Hanson, R. K. 2011
• Multi-Species Measurements of n-Butanol Pyrolysis behind Reflected Shock Waves 7th International Conference on Chemical Kinetics Cook, R. D., Sur, R., Stranic, I., Davidson, D. F., Hanson, R. K., Harper, M. R., Green, W. H. 2011
• Tunable Diode Laser Absorption Diagnostic for Scramjet Combustion Flows 7th U.S. National Combustion Meeting Schultz, I. A., Goldenstein, C. S., Jeffries, J. B., Hanson, R. K. 2011
• Shock Tube/Laser Absorption Database for the Oxidation of Hi Fire JP-7 Surrogate Fuel JANNAF Meeting Davidson, D. F., Hanson, R. K., Ren, W. 2011
• Ignition and Flame Structure in a Compact Inlet/Scramjet Combustor Model 17th AIAA International Space Planes and Hypersonic Systems and Technologies Conference Gamba, M., Miller, V. A., Mungal, M. G., Hanson, R. K. 2011

  View details for DOI 10.2514/6.2011-2366

• Shock tube/laser absorption measurements of ethylene time-histories during ethylene and n-heptane pyrolysis PROCEEDINGS OF THE COMBUSTION INSTITUTE Pilla, G. L., Davidson, D. F., Hanson, R. K. 2011; 33: 333-340

  View details for DOI 10.1016/j.proci.2010.06.146

  View details for Web of Science ID 000285780200028

• Applications of quantitative laser sensors to kinetics, propulsion and practical energy systems PROCEEDINGS OF THE COMBUSTION INSTITUTE Hanson, R. K. 2011; 33: 1-40

  View details for DOI 10.1016/j.proci.2010.09.007

  View details for Web of Science ID 000285780200001

• Response of Bacillus thuringiensis Al Hakam Endospores to Gas Dynamic Heating in a Shock Tube ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS McCartt, A. D., Gates, S. D., Jeffries, J. B., Hanson, R. K., Joubert, L. M., Buhr, T. L. 2011; 225 (11-12): 1367-1377

  View details for DOI 10.1524/zpch.2011.0183

  View details for Web of Science ID 000299393700012

• Multi-species time-history measurements during n-dodecane oxidation behind reflected shock waves PROCEEDINGS OF THE COMBUSTION INSTITUTE Davidson, D. F., Hong, Z., Pilla, G. L., Farooq, A., Cook, R. D., Hanson, R. K. 2011; 33: 151-157

  View details for DOI 10.1016/j.proci.2010.05.104

  View details for Web of Science ID 000285780200006

• Shock tube ignition delay time measurements in propane/O-2/argon mixtures at near-constant-volume conditions PROCEEDINGS OF THE COMBUSTION INSTITUTE Lam, K., Hong, Z., Davidson, D. F., Hanson, R. K. 2011; 33: 251-258

  View details for DOI 10.1016/j.proci.2010.06.131

  View details for Web of Science ID 000285780200018

• OH and C2H4 species time-histories during hexadecane and diesel ignition behind reflected shock waves PROCEEDINGS OF THE COMBUSTION INSTITUTE Haylett, D. R., Cook, R. D., Davidson, D. F., Hanson, R. K. 2011; 33: 167-173

  View details for DOI 10.1016/j.proci.2010.05.053

  View details for Web of Science ID 000285780200008

• High-Temperature Measurements of the Rate Constants for Reactions of OH with a Series of Large Normal Alkanes: n-Pentane, n-Heptane, and n-Nonane ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS Pang, G. A., Hanson, R. K., Golden, D. M., Bowman, C. T. 2011; 225 (11-12): 1157-1178

  View details for DOI 10.1524/zpch.2011.0156

  View details for Web of Science ID 000299393700002

• In situ absorption sensor for NO in combustion gases with a 5.2 mu m quantum-cascade laser PROCEEDINGS OF THE COMBUSTION INSTITUTE Chao, X., Jeffries, J. B., Hanson, R. K. 2011; 33: 725-733

  View details for DOI 10.1016/j.proci.2010.05.014

  View details for Web of Science ID 000285780200075

• Temperature and pressure imaging using infrared planar laser-induced fluorescence APPLIED OPTICS Rothamer, D. A., Hanson, R. K. 2010; 49 (33): 6436-6447

  Abstract

  A new diagnostic technique for measurements of temperature and pressure distribution in gaseous flows has been developed. The technique, based on infrared planar laser-induced fluorescence (IR-PLIF), is applicable to all IR-active species. A simple two-line excitation approach is used for measurements of temperature, while pressure measurements utilize online excitation on one rotational line and offline excitation on another. A demonstration of the technique in a supersonic underexpanded jet of 30% CO2 and 70% N2 was performed, and the results are, to the best of our knowledge, the first demonstration of temperature and pressure imaging using IR-PLIF. The developed diagnostic shows potential for single-shot two-dimensional measurements of temperature and pressure in gaseous flows.

  View details for Web of Science ID 000284396500010

  View details for PubMedID 21102669

• Shock Tube/Laser Absorption Measurements of the Reaction Rates of OH with Ethylene and Propene JOURNAL OF PHYSICAL CHEMISTRY A Vasu, S. S., Hong, Z., Davidson, D. F., Hanson, R. K., Golden, D. M. 2010; 114 (43): 11529-11537

  Abstract

  Reaction rates of hydroxyl (OH) radicals with ethylene (C₂H₄) and propene (C₃H₆) were studied behind reflected shock waves. OH + ethylene → products (rxn 1) rate measurements were conducted in the temperature range 973-1438 K, for pressures from 2 to 10 atm, and for initial concentrations of ethylene of 500, 751, and 1000 ppm. OH + propene → products (rxn 2) rate measurements spanned temperatures of 890-1366 K, pressures near 2.3 atm, and initial propene concentrations near 300 ppm. OH radicals were produced by shock-heating tert-butyl hydroperoxide, (CH₃)₃-CO-OH, and monitored by laser absorption near 306.7 nm. Rate constants for the reactions of OH with ethylene and propene were extracted by matching modeled and measured OH concentration time-histories in the reflected shock region. Current data are in excellent agreement with previous studies and extend the temperature range of OH + propene data. Transition state theory calculations using recent ab initio results give excellent agreement with our measurements and other data outside our temperature range. Fits (in units of cm³/mol/s) to the abstraction channels of OH + ethylene and OH + propene are k₁ = 2.23 × 10⁴ (T)(2.745) exp(-1115 K/T) for 600-2000 K and k₂ = 1.94 × 10⁶ (T)(2.229) exp(-540 K/T) for 700-1500 K, respectively. A rate constant determination for the reaction TBHP → products (rxn 3) was also obtained in the range 745-1014 K using OH data from behind both incident and reflected shock waves. These high-temperature measurements were fit with previous low-temperature data, and the following rate expression (0.6-2.6 atm), applicable over the temperature range 400-1050 K, was obtained: k₃ (1/s) = 8.13 × 10⁻¹² (T)(7.83) exp(-14598 K/T).

  View details for DOI 10.1021/jp106049s

  View details for Web of Science ID 000283471900020

  View details for PubMedID 20923208

• Bacillus endospore resistance to gas dynamic heating JOURNAL OF APPLIED MICROBIOLOGY Gates, S. D., McCartt, A. D., Lappas, P., Jeffries, J. B., Hanson, R. K., Hokama, L. A., Mortelmans, K. E. 2010; 109 (5): 1591-1598

  Abstract

  To develop a novel laboratory procedure for the study of shock wave-induced damage to Bacillus endospores.Bacillus atrophaeus endospores are nebulized into an aerosol, loaded into the stanford aerosol shock tube and subjected to shock waves of controlled strength. Endospores experience uniform test temperatures between 500 and 1000K and pressures ranging from 2 to 7atm, for a relatively short time (2-3ms). During this process, the bioaerosol is observed using in situ laser absorption and scattering diagnostics. Additionally, shock-treated samples are extracted for ex situ analysis including viability plating, flow cytometry and SEM imaging. Measurements indicate that endospores lose the ability to form colonies when heated to test temperatures above 500K while significant breakdown in morphology is observed at test temperatures above 750K.These results demonstrate the disruption of essential biochemical pathways or biomolecules prior to the onset of significant endospore morphological deterioration.This novel laboratory approach to study the interaction of endospores with shock waves provides an experimental means to investigate the mechanisms of endospore resistance to rapid heating. In addition, this methodology allows for the direct simulation of a blast wave-bioaerosol interaction in an atmospheric environment.

  View details for DOI 10.1111/j.1365-2672.2010.04785.x

  View details for Web of Science ID 000282813800010

  View details for PubMedID 20618888

• Mass Flux Sensing via Tunable Diode Laser Absorption of Water Vapor 48th AIAA Aerospace Sciences Meeting and Exhibit Including the New Horizons Forum and Aerospace Exposition Chang, L. S., Jeffries, J. B., Hanson, R. K. AMER INST AERONAUTICS ASTRONAUTICS. 2010: 2687–93

  View details for DOI 10.2514/1.J050544

  View details for Web of Science ID 000284252300022

• Multi-species time-history measurements during n-heptane oxidation behind reflected shock waves COMBUSTION AND FLAME Davidson, D. F., Hong, Z., Pilla, G. L., Farooq, A., Cook, R. D., Hanson, R. K. 2010; 157 (10): 1899-1905

  View details for DOI 10.1016/j.combustflame.2010.01.004

  View details for Web of Science ID 000281337800009

• Temperature sensing in shock-heated evaporating aerosol using wavelength-modulation absorption spectroscopy of CO2 near 2.7 mu m MEASUREMENT SCIENCE & TECHNOLOGY Ren, W., Jeffries, J. B., Hanson, R. K. 2010; 21 (10)

  View details for DOI 10.1088/0957-0233/21/10/105603

  View details for Web of Science ID 000281787100044

• Planar laser-induced fluorescence imaging in shock tube flows EXPERIMENTS IN FLUIDS Yoo, J., Mitchell, D., Davidson, D. F., Hanson, R. K. 2010; 49 (4): 751-759

  View details for DOI 10.1007/s00348-010-0876-2

  View details for Web of Science ID 000282215500002

• Measurements of the reaction of OH with n-butanol at high-temperatures CHEMICAL PHYSICS LETTERS Vasu, S. S., Davidson, D. F., Hanson, R. K., Golden, D. M. 2010; 497 (1-3): 26-29

  View details for DOI 10.1016/j.cplett.2010.08.001

  View details for Web of Science ID 000281526700006

• High-Temperature Measurements and a Theoretical Study of the Reaction of OH with 1,3-Butadiene JOURNAL OF PHYSICAL CHEMISTRY A Vasu, S. S., Zador, J., Davidson, D. F., Hanson, R. K., Golden, D. M., Miller, J. A. 2010; 114 (32): 8312-8318

  Abstract

  The reaction of hydroxyl (OH) radicals with 1,3-butadiene (C(4)H(6)) was studied behind reflected shock waves over the temperature range 1011-1406 K and at pressures near 2.2 atm. OH radicals were produced by shock-heating tert-butyl hydroperoxide, (CH(3))(3)-CO-OH, and were monitored by narrow line width ring dye laser absorption of the well-characterized R(1)(5) line of the OH A-X (0,0) band near 306.7 nm. OH time histories were modeled using a comprehensive 1,3-butadiene oxidation mechanism, and rate constants for the reaction of OH with 1,3-butadiene were extracted by matching modeled and measured OH concentration time histories. Detailed error analyses yielded an uncertainty estimate of +/-13% at 1200 K for the rate coefficient of the target reaction. The current data extends the temperature range of the only previous high-temperature study for this reaction. The rate coefficient and the branching fractions for the H-abstraction channels of the target reaction were also calculated over the temperature range 250-2500 K using variational transition-state theory based on QCISD(T)/cc-pVinfinityZ//B3LYP/6-311++G(d,p) quantum chemistry. The calculations are in good agreement with the experimental results above 1200 K.

  View details for DOI 10.1021/jp104880u

  View details for Web of Science ID 000280727200013

  View details for PubMedID 20701338

• Shock-Tube Experiments and Kinetic Modeling of Toluene Ignition JOURNAL OF PROPULSION AND POWER Vasu, S. S., Davidson, D. F., Hanson, R. K. 2010; 26 (4): 776-783

  View details for DOI 10.2514/1.46637

  View details for Web of Science ID 000280255300017

• A Shock Tube Study of OH + H2O2 -> H2O + HO2 and H2O2 + M -> 2OH+M using Laser Absorption of H2O and OH JOURNAL OF PHYSICAL CHEMISTRY A Hong, Z., Cook, R. D., Davidson, D. F., Hanson, R. K. 2010; 114 (18): 5718-5727

  Abstract

  The rate constants of the reactions: (1) H2O2+M-->2OH+M, (2) OH+H2O2-->H2O+HO2 were measured in shock-heated H(2)O(2)/Ar mixtures using laser absorption diagnostics for H(2)O and OH. Time-histories of H(2)O were monitored using tunable diode laser absorption at 2550.96 nm, and time-histories of OH were achieved using ring dye laser absorption at 306 nm. Initial H(2)O(2) concentrations were also determined utilizing the H(2)O diagnostic. On the basis of simultaneous time-history measurements of OH and H(2)O, k(2) was found to be 4.6 x 10(13) exp(-2630 K/T) [cm(3) mol(-1) s(-1)] over the temperature range 1020-1460 K at 1.8 atm; additional measurements of k(2) near 1 atm showed no significant pressure dependence. Similarly, k(1) was found to be 9.5 x 10(15) exp(-21 250 K/T) [cm(3) mol(-1) s(-1)] over the same temperature and pressure range.

  View details for DOI 10.1021/jp100204z

  View details for Web of Science ID 000277280400013

  View details for PubMedID 20397668

• Experimental Study of the Rate of OH + HO2 -> H2O + O-2 at High Temperatures Using the Reverse Reaction JOURNAL OF PHYSICAL CHEMISTRY A Hong, Z., Vasu, S. S., Davidson, D. F., Hanson, R. K. 2010; 114 (17): 5520-5525

  Abstract

  The rate constant of the reaction OH + HO(2) --> H(2)O + O(2) (1) can be inferred at high temperatures from measurements of the rate of its reverse reaction H(2)O + O(2) --> OH + HO(2) (-1). In this work, we used laser absorption of both H(2)O and OH to study the reverse reaction in shock-heated H(2)O/O(2)/Ar mixtures over the temperature range 1600-2200 K. Initial H(2)O concentrations were determined using tunable diode laser absorption near 2.5 microm, and OH concentration time-histories were measured using UV ring dye laser absorption near 306.7 nm. Detailed kinetic analysis of the OH time-history profiles yielded a value for the rate constant k(1) of (3.3 +/- 0.9) x 10(13) [cm(3) mol(-1) s(-1)] between 1600 and 2200 K. The results of this study agree well with those reported by Srinivasan et al. (Srinivasan, N.K.; Su, M.-C.; Sutherland, J.W.; Michael, J.V.; Ruscic, B. J. Phys. Chem. A 2006, 110, 6602-6607) in the temperature regime between 1200 and 1700 K. The combination of the two studies suggests only a weak temperature dependence of k(1) above 1200 K. Data from the current study and that of Keyser (Keyser, L.F. J. Phys. Chem. 1988, 92, 1193-1200) at lower temperatures can be described by the k(1) expression proposed by Baulch et al. (Baulch, D.L.; Cobos, C.J.; Cox, R.A.; Esser, C.; Frank, P.; Just, Th.; Kerr, J.A.; Pilling, M.J.; Troe, J.; Walker, R.W.; Warnatz, J. J. Phys. Chem. Ref. Data 1992, 21, 411), k(1) = 2.89 x 10(13) exp(252/T) [cm(3) mol(-1) s(-1)]. However, it should be noted that some previous studies suggest a k(1) minimum around 1250 K (Hippler, H.; Neunaber, H.; Troe, J. J. Chem. Phys. 1995, 103, 3510-3516) or 1000 K (Kappel, C.; Luther, K.; Troe, J. Phys. Chem. Chem. Phys. 2002, 4, 4392-4398).

  View details for DOI 10.1021/jp100739t

  View details for Web of Science ID 000277053400012

  View details for PubMedID 20392098

• High-pressure measurements of CO2 absorption near 2.7 mu m: Line mixing and finite duration collision effects JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Farooq, A., Jeffries, J. B., Hanson, R. K. 2010; 111 (7-8): 949-960

  View details for DOI 10.1016/j.jqsrt.2010.01.001

  View details for Web of Science ID 000276124500001

• Optimization of a tracer-based PLIF diagnostic for simultaneous imaging of EGR and temperature in IC engines APPLIED PHYSICS B-LASERS AND OPTICS Rothamer, D. A., Snyder, J. A., Hanson, R. K., Steeper, R. R. 2010; 99 (1-2): 371-384

  View details for DOI 10.1007/s00340-009-3815-2

  View details for Web of Science ID 000275892200052

• Ignition Delay Time Measurements of Normal Alkanes and Simple Oxygenates JOURNAL OF PROPULSION AND POWER Davidson, D. F., Ranganath, S. C., Lam, K., Liaw, M., Hong, Z., Hanson, R. K. 2010; 26 (2): 280-287

  View details for DOI 10.2514/1.44034

  View details for Web of Science ID 000276712400009

• Chemical Nonequilibrium, Heat Transfer, and Friction in a Detonation Tube with Nozzles JOURNAL OF PROPULSION AND POWER Barbour, E. A., Hanson, R. K. 2010; 26 (2): 230-239

  View details for DOI 10.2514/1.44814

  View details for Web of Science ID 000276712400004

• CW laser-induced fluorescence of toluene for time-resolved imaging of gaseous flows APPLIED PHYSICS B-LASERS AND OPTICS Cheung, B. H., Hanson, R. K. 2010; 98 (2-3): 581-591

  View details for DOI 10.1007/s00340-009-3785-4

  View details for Web of Science ID 000273307300052

• The Influence of Wall Heat Transfer, Friction, and Condensation on Detonation Tube Performance COMBUSTION SCIENCE AND TECHNOLOGY Owens, Z. C., Hanson, R. K. 2010; 182 (8): 1104-1140

  View details for DOI 10.1080/00102200903485202

  View details for Web of Science ID 000280386500008

• Mass Flux Sensing via Tunable Diode Laser Absorption of Water Vapor 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition Chang, L. S., Jeffries, J. B., Hanson, R. K. 2010

  View details for DOI 10.2514/6.2010-303

• Mulit-Species Measurements Behind Reflected Shock Waves in Hydrocarbons Using Laser Absorption 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition Davidson, D. F., Pilla, G., Farooq, A., Cook, R., Hong, Z., Hanson, R. K. 2010

  View details for DOI 10.2514/6.2010-198

• Crank-angle-resolved Measurements of Air-Fuel Ratio, Temperature and Liquid Fuel Droplet Scattering in a Direct-injection Gasoline Engine SAE Powertrains Fuels & Lubricants Meeting Sholes, K. R., Shouji, K., Chaya, T., Jeffries, J. B., Porter, J. M., Pyun, S. P., Hanson, R. K., 2010

  View details for DOI 10.4271/2010-01-2246

• A Second-Generation Aerosol Shock Tube for Combustion Research 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition Haylett, D. R., Davidson, D. F., Hanson, R. K. 2010

  View details for DOI 10.2514/6.2010-196

• Tunable Diode Laser Absorption Sensor of Temperature and Water Concentration in Supersonic Flows 49th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition Goldenstein, C. S., Schultz, I. A., Jeffries, J. B., Hanson, R. K. 2010

  View details for DOI 10.2514/6.2011-1094

• PLIF Measurements of Thermal Stratification in a HCCI Engine under Fired Operation SAE World Congress Snyder, J. A., Hanson, R. K., Dronniou, N., Dec, J. E. 2010: 1669–88

  View details for DOI 10.4271/2011-01-1291

• Shock Tube Laser Absorption Studies of the Decomposition of Fuel Surrogates JANNAF Joint Propulsion Meeting Davidson, D. F., Pilla, G., MacDonald, M. E., Hanson, R. K. 2010
• Laser Diagnostic Techniques for Shock Tube Studies of Combustion Chemistry Laser Applications to Chemical, Security and Environmental Analysis Hanson, R. K. 2010

  View details for DOI 10.1364/LACSEA.2010.LWB3

• Determination of Cycle Temperatures and Residual Gas Fraction for HCCI Negative Valve Overlap Operation SAE International Journal of Engines Fitzgerald, R. P., Steeper, R., Snyder, J., Hanson, R. K., Hessel, R. 2010; 3 (1): 124-141

  View details for DOI 10.4271/2010-01-0343

• Multi-Species Measurements Behind Reflected Shock Waves in Hydrocarbons using Laser Absorption 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition Davidson, D. F., Pilla, G. L., Farooq, A., Cook, R. D., Hong, Z., Hanson, R. K. 2010

  View details for DOI 10.2514/6.2010-198

• An In-cylinder Laser Absorption Sensor for Crank-angle-resolved Measurements of Gasoline , Concentration and Temperature SAE Powertrains, Fuels and Lubricants Jeffries, J. B., Porter, J. M., Pyun, S. H., Hanson, R. K., Sholes, K. R., Shouji, K., Chaya, T. 2010: 373–82

  View details for DOI 10.4271/2010-01-2251

• Measurements of CO2 concentration and temperature at high pressures using 1f-normalized wavelength modulation spectroscopy with second harmonic detection near 2.7 mu m APPLIED OPTICS Farooq, A., Jeffries, J. B., Hanson, R. K. 2009; 48 (35): 6740-6753

  Abstract

  Tunable diode lasers (TDL) near 2.7 mum are used to measure high-resolution direct absorption and wavelength modulation with second harmonic (WMS-2f) spectra at high pressures for two CO(2) transitions near 3633.08 and 3645.20 cm(-1), belonging to the nu(1)+ nu(3) vibrational band. Important factors influencing the design of a high-pressure TDL sensor and the variation of WMS-2f line shape with changes in pressure and laser parameters are discussed. Measurements of line strength and line broadening parameters are carried out for the 3645.20 cm(-1) transition in an atmospheric-pressure, high-temperature cell. A room-temperature high-pressure cell is then used to measure the pressure shift for both CO(2) transitions. Deviation of the direct absorption and wavelength modulation spectroscopy (WMS) spectra from the Lorentzian profile is studied in a high-density (9.2 amagats) CO(2)-Ar mixture. The WMS spectra are shown to be negligibly affected by non-Lorentzian effects up to 10 atm and room temperature, in contrast with direct absorption. Measurements of CO(2) concentration and temperature are carried out in nonreactive shock-tube experiments (P approximately 8-12 atm, T~800-1200 K) to validate the accuracy and precision of wavelength-modulation-spectroscopy-based sensing. CO(2) time histories are then measured in heptane ignition experiments and compared with reaction kinetics mechanisms to demonstrate the use of this sensor in high-pressure combustion systems.

  View details for Web of Science ID 000272609700017

  View details for PubMedID 20011014

• Mid-infrared absorption measurements of liquid hydrocarbon fuels near 3.4 mu m JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Porter, J. M., Jeffries, J. B., Hanson, R. K. 2009; 110 (18): 2135-2147

  View details for DOI 10.1016/j.jqsrt.2009.05.017

  View details for Web of Science ID 000270629400014

• Two-color-absorption sensor for time-resolved measurements of gasoline concentration and temperature APPLIED OPTICS Pyun, S. H., Porter, J. M., Jeffries, J. B., Hanson, R. K., Montoya, J. C., Allen, M. G., Sholes, K. R. 2009; 48 (33): 6492-6500

  Abstract

  A midinfrared absorption sensor for crank-angle-resolved in-cylinder measurements of gasoline concentration and gas temperature for spark-ignition internal-combustion engines is reported, and design considerations and validation testing in the controlled environments of a heated cell and shock-heated gases are discussed. Mid-IR laser light was tuned to transitions in the strong absorption bands associated with C-H stretching vibration near 3.4 microm, and time-resolved fuel vapor concentration and gas temperature were determined simultaneously from the absorption at two different wavelengths. These two infrared laser wavelengths were simultaneously produced by difference-frequency generation, which combines a near-IR signal laser with two near-IR pump lasers in a periodically poled lithium niobate crystal. Injection current modulation of the pump lasers produced intensity modulation of the mid-IR, which allowed the transmitted signals from the two laser wavelengths to be detected on a single detector and separated by frequency demultiplexing. Injection current modulation produced a wavelength modulation synchronous with the intensity modulation for each of the laser wavelengths, and accurate measurement of the gasoline absorption signal required the effects of wavelength modulation to be considered. Validation experiments were conducted for a single-component hydrocarbon fuel (2,2,4-trimethyl-pentane, commonly known as iso-octane) and a gasoline blend in a heated static cell (300 < or = T < or = 600 K) and behind planar shock waves (600 < T < 1100 K) in a shock tube. With a bandwidth of 10 kHz, the measured fuel concentrations agreed within 5% RMS and the measured temperature agreed within 3% RMS to the known values. The 10 kHz bandwidth is sufficient to resolve 1 crank-angle degree at 1600 RPM.

  View details for Web of Science ID 000272030800014

  View details for PubMedID 19935971

• Hydrogen Peroxide Decomposition Rate: A Shock Tube Study Using Tunable Laser Absorption of H2O near 2.5 mu m JOURNAL OF PHYSICAL CHEMISTRY A Hong, Z., Farooq, A., Barbour, E. A., Davidson, D. F., Hanson, R. K. 2009; 113 (46): 12919-12925

  Abstract

  The thermal decomposition of hydrogen peroxide was measured behind reflected shock waves in hydrogen peroxide/inert gas mixtures using a sensitive laser diagnostic for water vapor. In these mixtures, the formation rate of water is predominantly controlled by the decomposition rate of hydrogen peroxide. Rate determinations were made over a temperature range of 1000-1200 K and a pressure range of 0.9-3.2 atm for both argon and nitrogen carrier gases. Good detection sensitivity for water was achieved using tunable diode laser absorption of water at 2550.96 nm within its v(3) fundamental band. Hydrogen peroxide decomposition rates were found to be independent of pressure at 0.9 and 1.7 atm and showed only slight influence of pressure at 3.2 atm. The best fit of the current data to the low-pressure-limit rate for H(2)O(2) dissociation in argon bath gas is k(1,0) = 10(15.97+/-0.10) exp(-21 220 +/- 250 K/T) [cm(3) mol(-1) s(-1)] (1000-1200 K). Experiments conducted in a nitrogen bath gas show a relative collision efficiency of argon to nitrogen of 0.67.

  View details for DOI 10.1021/jp907219f

  View details for Web of Science ID 000271583100021

  View details for PubMedID 19799388

• Absorption sensor for CO in combustion gases using 2.3 mu m tunable diode lasers 6th International Symposium on Measurement Techniques for Multiphase Flows Chao, X., Jeffries, J. B., Hanson, R. K. IOP PUBLISHING LTD. 2009

  View details for DOI 10.1088/0957-0233/20/11/115201

  View details for Web of Science ID 000270988800021

• Calibration-free wavelength-modulation spectroscopy for measurements of gas temperature and concentration in harsh environments APPLIED OPTICS Rieker, G. B., Jeffries, J. B., Hanson, R. K. 2009; 48 (29): 5546-5560

  Abstract

  We present a practical implementation of calibration-free wavelength-modulation spectroscopy with second harmonic detection (WMS-2f) for measurements of gas temperature and concentration in harsh environments. The method is applicable to measurements using lasers with synchronous wavelength and intensity modulation (such as injection current-tuned diode lasers). The key factors that enable measurements without the on-site calibration normally associated with WMS are (1) normalization of the WMS-2f signal by the first harmonic (1f) signal to account for laser intensity, and (2) the inclusion of laser-specific tuning characteristics in the spectral-absorption model that is used to compare with measured 1f-normalized, WMS-2f signals to infer gas properties. The uncertainties associated with the calibration-free WMS method are discussed, with particular emphasis on the influence of pressure and optical depth on the WMS signals. Many of these uncertainties are also applicable to calibrated WMS measurements. An example experimental setup that combines six tunable diode laser sources between 1.3 and 2.0 mum into one probe beam for measurements of temperature, H(2)O, and CO(2) is shown. A hybrid combination of wavelength and frequency demultiplexing is used to distinguish among the laser signals, and the optimal set of laser-modulation waveforms is presented. The system is demonstrated in the harsh environment of a ground-test scramjet combustor. A comparison of direct absorption and 1f-normalized, WMS-2f shows a factor of 4 increase in signal-to-noise ratio with the WMS technique for measurements of CO(2) in the supersonic flow. Multidimensional computational fluid-dynamics (CFD) calculations are compared with measurements of temperature and H(2)O using a simple method that accounts for the influence of line-of-sight (LOS) nonuniformity on the absorption measurements. The comparisons show the ability of the LOS calibration-free technique to gain useful information about multidimensional CFD models.

  View details for Web of Science ID 000270667800018

  View details for PubMedID 19823239

• The effect of oxygenates on soot formation in rich heptane mixtures: A shock tube study FUEL Hong, Z., Davidson, D. F., VASU, S. S., Hanson, R. K. 2009; 88 (10): 1901-1906

  View details for DOI 10.1016/j.fuel.2009.04.013

  View details for Web of Science ID 000268164800014

• High-Temperature Shock Tube Measurements of Dimethyl Ether Decomposition and the Reaction of Dimethyl Ether with OH JOURNAL OF PHYSICAL CHEMISTRY A Cook, R. D., Davidson, D. F., Hanson, R. K. 2009; 113 (37): 9974-9980

  Abstract

  We measured the first high-temperature rate measurements of two dimethyl ether (DME) reactions, (1) DME + Ar --> CH3O + CH3 + Ar and (2) DME + OH --> CH3OCH2 + H2O, in a shock tube by monitoring OH radicals. OH was measured with a narrow-line width laser absorption diagnostic using the well-known R1(5) line of the A-X(0,0) transition at 306.7 nm. The rate k1 is in the falloff regime at high temperatures, so it was measured at several pressures from 0.6 to 11.5 atm and temperatures from 1349 to 1790 K. OH radicals were formed by shock-heating mixtures of DME and O2 in Ar. These mixtures take advantage of the rapid decomposition of the product CH3O, forming H-atoms, which react with O2 to form OH. In carefully chosen mixtures, OH concentration is primarily sensitive to k1 and the well-known rate of H + O2 --> OH + O. Uncertainty in the k1 measurements was estimated to be +/-35%. The rate measurements were then modeled using RRKM theory, which describes the data quite well. Both the rate measurements and the RRKM model were fit from 1000 to 1800 K using the Troe falloff form: k(1,infinity)(T) = (4.38 x 10(21))T(-1.57) exp(-42,220 K/T) s(-1), k(1,o) = 7.52 x 10(15) exp(-21,537 K/T) cm3 mol(-1) s(-1), and F(cent) = 0.454 exp(-T/2510). The rate of k2 was measured at pressures near 1.6 atm and temperatures from 923 to 1423 K. OH radicals were generated by the thermal decomposition of the OH precursor tert-butyl hydroperoxide (TBHP), and k2 was inferred from the observed decay of OH with an estimated uncertainty of +/-40%. The high-temperature measurements were compared with several rate evaluations and previous low-temperature measurements. The rate evaluation by Curran et al. of k2 = (6.32 x 10(6))T2 exp(328 K/T) (cm3 mol(-1) s(-1)) was found to be an excellent fit to both the previous low-temperature measurements and this work.

  View details for DOI 10.1021/jp902403n

  View details for Web of Science ID 000269656000005

  View details for PubMedID 19694474

• Mid-infrared laser-absorption diagnostic for vapor-phase measurements in an evaporating n-decane aerosol APPLIED PHYSICS B-LASERS AND OPTICS Porter, J. M., Jeffries, J. B., Hanson, R. K. 2009; 97 (1): 215-225

  View details for DOI 10.1007/s00340-009-3658-x

  View details for Web of Science ID 000269844700028

• Recent advances in shock tube/laser diagnostic methods for improved chemical kinetics measurements SHOCK WAVES Davidson, D. F., Hanson, R. K. 2009; 19 (4): 271-283

  View details for DOI 10.1007/s00193-009-0203-0

  View details for Web of Science ID 000268548300001

• Contact surface tailoring condition for shock tubes with different driver and driven section diameters SHOCK WAVES Hong, Z., Davidson, D. F., Hanson, R. K. 2009; 19 (4): 331-336

  View details for DOI 10.1007/s00193-009-0212-z

  View details for Web of Science ID 000268548300007

• Sensitive detection of temperature behind reflected shock waves using wavelength modulation spectroscopy of CO2 near 2.7 mu m APPLIED PHYSICS B-LASERS AND OPTICS Farooq, A., Jeffries, J. B., Hanson, R. K. 2009; 96 (1): 161-173

  View details for DOI 10.1007/s00340-009-3446-7

  View details for Web of Science ID 000266813000025

• The use of driver inserts to reduce non-ideal pressure variations behind reflected shock waves SHOCK WAVES Hong, Z., Pang, G. A., Vasu, S. S., Davidson, D. F., Hanson, R. K. 2009; 19 (2): 113-123

  View details for DOI 10.1007/s00193-009-0205-y

  View details for Web of Science ID 000266480300004

• OH time-histories during oxidation of n-heptane and methylcyclohexane at high pressures and temperatures COMBUSTION AND FLAME Vasu, S. S., Davidson, D. F., Hanson, R. K. 2009; 156 (4): 736-749

  View details for DOI 10.1016/j.combustflame.2008.09.006

  View details for Web of Science ID 000264582400002

• Jet fuel ignition delay times: Shock tube experiments over wide conditions and surrogate model predictions (vol 152, pg 125, 2008) COMBUSTION AND FLAME Vasu, S. S., Davidson, D. F., Hanson, R. K. 2009; 156 (4): 946-946

  View details for DOI 10.1016/j.combustflame.2009.01.016

  View details for Web of Science ID 000264582400020

• Two-wavelength mid-IR absorption diagnostic for simultaneous measurement of temperature and hydrocarbon fuel concentration PROCEEDINGS OF THE COMBUSTION INSTITUTE Klingbeil, A. E., Porter, J. M., Jeffries, J. B., Hanson, R. K. 2009; 32: 821-829

  View details for DOI 10.1016/j.proci.2008.06.058

  View details for Web of Science ID 000264756800092

• A diode laser absorption sensor for rapid measurements of temperature and water vapor in a shock tube 26th International Symposium on Shock Waves Li, H., Farooq, A., Cook, R. D., Davidson, D. F., Jeffries, J. B., Hanson, R. K. SPRINGER-VERLAG BERLIN. 2009: 409–414

  View details for Web of Science ID 000269686200065

• Measurements of ignition delay times and OH species concentrations in DME/O-2/Ar mixtures 26th International Symposium on Shock Waves Cook, R. D., Davidson, D. F., Hanson, R. K. SPRINGER-VERLAG BERLIN. 2009: 763–767

  View details for Web of Science ID 000269686200123

• High-pressure shock tube experiments and modeling of n-dodecane/air ignition 26th International Symposium on Shock Waves VASU, S. S., Davidson, D. F., Hanson, R. K. SPRINGER-VERLAG BERLIN. 2009: 293–298

  View details for Web of Science ID 000269686200046

• Tunable Diode Laser Sensing of NO near 5.2 μm and CO near 2.3 μm in Combustion Exhaust Gases 6th U.S. National Meeting on Combustion Jeffries, J. B., Hanson, R. K. 2009
• Rate Measurements of DME Decomposition and DME + OH at Elevated Temperatures 6th U.S. National Combustion Meeting Cook, R. D., Davidson, D. F., Hanson, R. K. 2009
• Measurements of Ignition Delay Times and OH Species Concentrations in DME/O2/AR Mixtures 26th International Symposium on Shock Waves Cook, R. D., Davidson, D. F., Hanson, R. K. 2009

  View details for DOI 10.1007/978-3-540-85168-4_123

• Boundary Layer Entrainment and Combustion in a Transverse Jet in Supersonic Crossflow 62nd Annual Meeting of the APS Division of Fluid Dynamics Heltsley, W. N., Gamba, M., Mungal, M. G., Hanson, R. K. 2009
• Mixing and Reaction of Jets in Supersonic Crossflows 12th EUROMECH European Turbulence Conference Heltsley, W. N., Do, H., Snyder, J. A., Mungal, M. G., Hanson, R. K. 2009
• Control of Instabilities in a Swirl-Stabilized Flame with a Tunable Diode Laser Temperature Sensor Nihon Nensho Gakkaishi (J. of Combustion Society of Japan) Li, H., Jeffries, J. B., Hanson, R. K. 2009; 50 (154): 289-296
• Tunable Diode Laser Sensing in Harsh Environments: Applications to Propulsion and Combustion invited plenary at 6th U.S. National Meeting on Combustion Hanson, R. K. 2009
• Dual-wavelength PLIF Measurements of Temperature and Composition in an Optical Engine with Negative Valve Overlaps SAE World Congress & Exhibition Snyder, J. A., Hanson, R. K., Fitzgerald, R. P., Steeper, R. R. 2009: 460–74

  View details for DOI 10.4271/2009-01-0661

• Tunable Diode Laser Absorption Measurements in a Fluidized-Bed Gasifier 26th International Pittsburgh Coal Conference Jeffries, J. B., Fahrland, A., Min, W., Hanson, R. K., Sweeney, D., Wagner, D., Whitty, K. J. 2009
• Ex Situ Analysis of Shock Wave Induced Damage to Bacillus Globigli (GB) Endospores poster at 2009 Chem. & Biol. Defense Science & Tech. Conf. Gates, S. D., McCartt, A. D., Lappas, P., Jeffries, J. B., Hanson, R. K., Hokama, L. A., Mortelmans, K. E. 2009
• In Situ Measurements of Shock Wave Interactions with Endospore-laden Aerosol poster at 2009 Chem. & Biol. Defense Science & Tech. Conf. McCartt, A. D., Gates, S. D., Lappas, P., Jeffries, J. B., Hanson, R. K., 2009
• Near-wall Combustion Zones of a Transverse Jet in Supersonic Crossflow poster at 2009 DFD meeting of APS Heltsley, W. N., Gamba, M., Mungal, M. G., Hanson, R. K. 2009
• Some Aspects of Toluene Ignition: Experiments and Modeling 6th U.S. National Combustion Meeting Vasu, S. S., Davidson, D. F., Hanson, R. K. 2009
• Simultaneous Measurement of Flow Fluctuations and Near-Field Pressure in a Subsonic Jet 15th AIAA/CEAS Aeroacoustics Conference (30th AIAA Aeroacoustics Conference) Kastner, J., Cuppoletti, D., Gutmark, E., Fahrland, A., Jeffries, J. B., Hanson, R. K., 2009

  View details for DOI 10.2514/6.2009-3211

• Species Time-History Measurements During n-Heptane Oxidation behind Reflected Shock Waves 6th U.S. National Combustion Meeting Davidson, D. F., Hong, Z., Pilla, G. L., Farooq, A., Cook, R. D., Hanson, R. K., 2009
• Analytic Model for Single-Cycle Detonation Tube with Diverging Nozzles JOURNAL OF PROPULSION AND POWER Barbour, E. A., Hanson, R. K. 2009; 25 (1): 162-172

  View details for DOI 10.2514/1.35420

  View details for Web of Science ID 000262843200016

• Measurements of high-pressure CO2 absorption near 2.0 mu m and implications on tunable diode laser sensor design APPLIED PHYSICS B-LASERS AND OPTICS Rieker, G. B., Jeffries, J. B., Hanson, R. K. 2009; 94 (1): 51-63

  View details for DOI 10.1007/s00340-008-3280-3

  View details for Web of Science ID 000261328900005

• Experimental study and modeling of shock tube ignition delay times for hydrogen-oxygen-argon mixtures at low temperatures PROCEEDINGS OF THE COMBUSTION INSTITUTE Pang, G. A., Davidson, D. F., Hanson, R. K. 2009; 32: 181-188

  View details for DOI 10.1016/j.proci.2008.06.014

  View details for Web of Science ID 000264756800016

• Diode laser-based detection of combustor instabilities with application to a scramjet engine PROCEEDINGS OF THE COMBUSTION INSTITUTE Rieker, G. B., Jeffries, J. B., Hanson, R. K., Mathur, T., Gruber, M. R., Carter, C. D. 2009; 32: 831-838

  View details for DOI 10.1016/j.proci.2008.06.114

  View details for Web of Science ID 000264756800093

• n-Dodecane oxidation at high-pressures: Measurements of ignition delay times and OH concentration time-histories PROCEEDINGS OF THE COMBUSTION INSTITUTE Vasu, S. S., Davidson, D. F., Hong, Z., Vasudevan, V., Hanson, R. K. 2009; 32: 173-180

  View details for DOI 10.1016/j.proci.2008.05.006

  View details for Web of Science ID 000264756800015

• Application of an aerosol shock tube to the measurement of diesel ignition delay times PROCEEDINGS OF THE COMBUSTION INSTITUTE Haylett, D. R., Lappas, P. P., Davidson, D. F., Hanson, R. K. 2009; 32: 477-484

  View details for DOI 10.1016/j.proci.2008.06.134

  View details for Web of Science ID 000264756800052

• An experimental and computational study of methyl ester decomposition pathways using shock tubes PROCEEDINGS OF THE COMBUSTION INSTITUTE Farooq, A., Davidson, D. F., Hanson, R. K., Huynh, L. K., Violi, A. 2009; 32: 247-253

  View details for DOI 10.1016/j.proci.2008.06.084

  View details for Web of Science ID 000264756800024

• Shock Tube Study of Methylcyclohexane Ignition over a Wide Range of Pressure and Temperature ENERGY & FUELS Vasu, S. S., Davidson, D. F., Hong, Z., Hanson, R. K. 2009; 23 (1): 175-185

  View details for DOI 10.1021/ef800694g

  View details for Web of Science ID 000263629900026

• Shock tube measurements of ignition delay times and OH time-histories in dimethyl ether oxidation PROCEEDINGS OF THE COMBUSTION INSTITUTE Cook, R. D., Davidson, D. F., Hanson, R. K. 2009; 32: 189-196

  View details for DOI 10.1016/j.proci.2008.06.113

  View details for Web of Science ID 000264756800017

• Simultaneous imaging of exhaust gas residuals and temperature during HCCI combustion PROCEEDINGS OF THE COMBUSTION INSTITUTE Rothamer, D. A., Snyder, J. A., Hanson, R. K., Steeper, R. R., Fitzgerald, R. P. 2009; 32: 2869-2876

  View details for DOI 10.1016/j.proci.2008.07.018

  View details for Web of Science ID 000264756900147

• Temperature- and composition-dependent mid-infrared absorption spectrum of gas-phase gasoline: Model and measurements FUEL Klingbeil, A. E., Jeffries, J. B., Hanson, R. K. 2008; 87 (17-18): 3600-3609

  View details for DOI 10.1016/j.fuel.2008.06.020

  View details for Web of Science ID 000259896000016

• Fluorescence quantum yield of carbon dioxide for quantitative UV laser-induced fluorescence in high-pressure flames APPLIED PHYSICS B-LASERS AND OPTICS Lee, T., Bessler, W. G., Yoo, J., Schulz, C., Jeffries, J. B., Hanson, R. K. 2008; 93 (2-3): 677-685

  View details for DOI 10.1007/s00340-008-3161-9

  View details for Web of Science ID 000260613600052

• Two-wavelength mid-IR diagnostic for temperature and n-dodecane concentration in an aerosol shock tube APPLIED PHYSICS B-LASERS AND OPTICS Klingbeil, A. E., Jeffries, J. B., Davidson, D. F., Hanson, R. K. 2008; 93 (2-3): 627-638

  View details for DOI 10.1007/s00340-008-3190-4

  View details for Web of Science ID 000260613600046

• Development of an aerosol shock tube for kinetic studies of low-vapor-pressure fuels COMBUSTION AND FLAME Davidson, D. F., Haylett, D. R., Hanson, R. K. 2008; 155 (1-2): 108-117

  View details for DOI 10.1016/j.combustflame.2008.01.006

  View details for Web of Science ID 000260362400008

• High-temperature shock tube study of the reactions CH3+OH -> products and CH3OH+Ar -> products INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Vasudevan, V., Cook, R. D., Hanson, R. K., Bowman, C. T., Golden, D. M. 2008; 40 (8): 488-495

  View details for DOI 10.1002/kin.20334

  View details for Web of Science ID 000257769400004

• In situ combustion measurements of H2O and temperature near 2.5 mu m using tunable diode laser absorption MEASUREMENT SCIENCE & TECHNOLOGY Farooq, A., Jeffries, J. B., Hanson, R. K. 2008; 19 (7)

  View details for DOI 10.1088/0957-0233/19/7/075604

  View details for Web of Science ID 000256907800036

• Measurements of near-UV absorption spectra of acetone and 3-pentanone at high temperatures JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Koch, J. D., Gronki, J., Hanson, R. K. 2008; 109 (11): 2037-2044

  View details for DOI 10.1016/j.jqsrt.2008.02.010

  View details for Web of Science ID 000257597300009

• Detection of trace nitric oxide concentrations using 1-D laser-induced fluorescence imaging APPLIED PHYSICS B-LASERS AND OPTICS Yoo, J., Lee, T., Jeffries, J. B., Hanson, R. K. 2008; 91 (3-4): 661-667

  View details for DOI 10.1007/s00340-008-3030-6

  View details for Web of Science ID 000256251400042

• A simple reactive gasdynamic model for the computation of gas temperature and species concentrations behind reflected shock waves INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Li, H., Owens, Z. C., Davidson, D. F., Hanson, R. K. 2008; 40 (4): 189-198

  View details for DOI 10.1002/kin.20305

  View details for Web of Science ID 000254068600003

• CO2 concentration and temperature sensor for combustion gases using diode-laser absorption near 2.7 mu m APPLIED PHYSICS B-LASERS AND OPTICS Farooq, A., Jeffries, J. B., Hanson, R. K. 2008; 90 (3-4): 619-628

  View details for DOI 10.1007/s00340-007-2925-y

  View details for Web of Science ID 000253574100041

• Jet fuel ignition delay times: Shock tube experiments over wide conditions and surrogate model predictions COMBUSTION AND FLAME Vasu, S. S., Davidson, D. E., Hanson, R. K. 2008; 152 (1-2): 125-143

  View details for DOI 10.1016/j.combustflame.2007.06.019

  View details for Web of Science ID 000252501500010

• Application of an Aerosol Shock Tube for the Kinetic Studies of n-Dodecane/Nano-Aluminum Slurries 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Jackson, D. E., Davidson, D. F., Hanson, R. K. 2008

  View details for DOI 10.2514/6.2008-4767

• Aerosol Shock Tube Measurements of the Decomposition Rate Measurements of RP-1, RP-2, n-dodecane, and RP-1 with Fuel Stabilizers 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit MacDonald, M. E., Davidson, D. F., Hanson, R. K. 2008

  View details for DOI 10.2514/6.2008-4766

• Tunable Diode Laser Absorption Diagnostics for CO2 and H2O in the 2.5-2.9 μm Spectral Region WIP poster at 32nd Symp (Int.) on Combustion Farooq, A., Jeffries, J. B., Hanson, R. K. 2008
• 2.3 μm Tunable Diode Laser Absorption Measurement of CO in Combustion Gases WIP poster at 32nd Symp (Int.) on Combustion Chao, X., Jeffries, J. B., Hanson, R. K. 2008
• Hypersonic mass-flux sensing with fiber-coupled tunable diode lasers for ground test applications and flight evaluation NASA ARMD Hypersonics NRA Review November Hanson, Ronald, K., Jeffries, Jay, B., Chang, L. 2008
• Shock Tube Studies of n-Alkane Oxidation and Pyrolysis: Development of a Fundamental Kinetic Database for Jet Fuels and Surrogates JANNAF 4th Liquid Propulsion Joint Meeting Davidson, D. F., Hanson, R. K. 2008
• Destruction of Bacterial Spore-Laden Aqueous Aerosols in Shock-heated Flows Laser Applications to Chemical, Security and Environmental Analysis Lappas, P., Haylett, D. R., Porter, J. M., Jeffries, J. B., Hanson, R. K., Hokama, L. A., Mortelmans, K. 2008

  View details for DOI 10.1364/BIOMED.2008.JMA28

• Shock Tube Study of Soot Formation in Rich Heptane/Oxygen Mixtures with DME/Acetone/Butanol/3-Pentanone Additives 32nd International Symposium on Combustion Hong, Z., Davidson, D. F., Vasu, S. S., Hanson, R. K. 2008
• Mapping the Combustion Stability Regimes of Hydrogen and Hydrocarbon Jets in Supersonic Crossflow with OH-PLIF 14th International Symposium on Applications of Laser Techniques to Fluid Mechanics Heltsley, W. N., Snyder, J. A., Mungal, M. G., Hanson, R. K. 2008
• OH Time-History Absorption Measurements at High Pressures and Temperatures behind Reflected Shocks during Methylcyclohexane Oxidation Western States Section of the Combustion Institute-Spring Meeting Vasu, S. S., Davidson, D. F., Hanson, R. K. 2008
• Two-Wavelength PLIF Diagnostic for Temperature and Composition SAE International Journal of Fuels and Lubricants Rothamer, D. A., Snyder, J. A., Hanson, R. K., Steeper, R. R. 2008; 1 (1): 520-533

  View details for DOI 10.4271/2008-01-1067

• Mid-IR Gas Sensing for Combustion Applications Laser Applications to Chemical, Security and Environmental Analysis Jeffries, J. B., Klingbeil, A. E., Barbour, E. A., Farooq, A., Hanson, R. K. 2008

  View details for DOI 10.1364/LACSEA.2008.LWC2

• Time-Resolved N-decane Vapor Concentration Measurement of CO in a Shock-Heated Evaporating Aerosol WIP poster at 32nd Symp (Int.) on Combustion Porter, J. M., Pilla, G. L., Jeffries, J. B., Hanson, R. K. 2008
• Investigation of the High Temperature Thermal Stability of Kerosenes using Shock Tubes JANNAF 4th Liquid Propulsion Joint Meeting Davidson, D. F., MacDonald, M. E., Hanson, R. K. 2008
• Laser-based Measurements of OH, Temperature, and Water Vapor Concentration in a Hydrocarbon-fueled Scramjet 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Gruber, M., Carter, C., Ryan, M., Rieker, G. B., Jeffries, J. B., Hanson, R. K., Liu J, Mathur, T. 2008

  View details for DOI 10.2514/6.2008-5070

• Dispersion, Activation and Destruction of Airborne Biological Threats: Laboratory Studies of the Interaction of Spore-Laden Aerosols with Shock/Blast Waves poster #146 at Chemical and Biological Defense Physical Science and Technology Conference Jeffries, J. B., Hanson, R. K., Davidson, D. F., Lappas, P., McCartt, A. D., Strand, C., Hokama, L. A., Mortelmans, K. E. 2008
• Diode laser measurements of temperature-dependent collisional-narrowing and broadening parameters of Ar-perturbed H2O transitions at 1391.7 and 1397.8 nm JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Li, H., Farooq, A., Jeffries, J. B., Hanson, R. K. 2008; 109 (1): 132-143

  View details for DOI 10.1016/j.jqsrt.2007.05.008

  View details for Web of Science ID 000251494600010

• Shock tube study of the reaction of CH with N-2: Overall rate and branching ratio JOURNAL OF PHYSICAL CHEMISTRY A Vasudevan, V., Hanson, R. K., Bowman, C. T., Golden, D. M., Davidson, D. F. 2007; 111 (46): 11818-11830

  Abstract

  We have studied the reaction between CH and N2, (1) CH + N2 --> products, in shock tube experiments using CH and NCN laser absorption. CH was monitored by continuous-wave, narrow-line-width laser absorption at 431.1 nm. The overall rate coefficient of the CH + N2 reaction was measured between 1943 and 3543 K, in the 0.9-1.4 atm pressure range, using a CH perturbation approach. CH profiles recorded upon shock-heating dilute mixtures of ethane in argon and acetic anhydride in argon were perturbed by the addition of nitrogen. The perturbation in the CH concentration was principally due to the reaction between CH and N2. Rate coefficients for the overall reaction were inferred by kinetically modeling the perturbed CH profiles. A least-squares, two-parameter fit of the current overall rate coefficient measurements was k1 = 6.03 x 1012 exp(-11150/T [K]) (cm3 mol-1 s-1). The uncertainty in k1 was estimated to be approximately +/-25% and approximately +/-35% at approximately 3350 and approximately 2100 K, respectively. At high temperatures, there are two possible product channels for the reaction between CH and N2, (1a) CH + N2 --> HCN + N and (1b) CH + N2 --> H + NCN. The large difference in the rates of the reverse reactions enabled inference of the branching ratio of reaction 1, k1b/(k1b + k1a), in the 2228-2905 K temperature range by CH laser absorption in experiments in a nitrogen bath. The current CH measurements are consistent with a branching ratio of 1 and establish NCN and H as the primary products of the CH + N2 reaction. A detailed and systematic uncertainty analysis, taking into account experimental and mechanism-induced contributions, yields a conservative lower bound of 0.70 for the branching ratio. NCN was also detected by continuous-wave, narrow-line-width laser absorption at 329.13 nm. The measured NCN time histories were used to infer the rate coefficient of the reaction between H and NCN, H + NCN --> HCN + N, and to estimate an absorption coefficient for the NCN radical.

  View details for DOI 10.1021/jp075638c

  View details for Web of Science ID 000250967800012

  View details for PubMedID 17958405

• Near-infrared diode laser absorption sensor for rapid measurements of temperature and water vapor in a shock tube APPLIED PHYSICS B-LASERS AND OPTICS Li, H., Farooq, A., Jeffries, J. B., Hanson, R. K. 2007; 89 (2-3): 407-416

  View details for DOI 10.1007/s00340-007-2781-9

  View details for Web of Science ID 000250629900044

• Temperature-dependent mid-IR absorption spectra of gaseous hydrocarbons JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Klingbeil, A. E., Jeffries, J. B., Hanson, R. K. 2007; 107 (3): 407-420

  View details for DOI 10.1016/j.jqsrt.2007.03.004

  View details for Web of Science ID 000249900100004

• Diode-laser sensor for air-mass flux 1: Design and wind-tunnel validation AIAA JOURNAL Lyle, K. H., Jeffries, J. B., Hanson, R. K. 2007; 45 (9): 2204-2212

  View details for DOI 10.2514/1.26360

  View details for Web of Science ID 000249451700010

• Diode-laser sensor for air-mass flux 2: Nonuniform flow modeling and aeroengine tests AIAA JOURNAL Lyle, K. H., Jeffries, J. B., Hanson, R. K., Winter, M. 2007; 45 (9): 2213-2223

  View details for DOI 10.2514/1.27683

  View details for Web of Science ID 000249451700011

• High-temperature shock tube measurements of methyl radical decomposition JOURNAL OF PHYSICAL CHEMISTRY A Vasudevan, V., Hanson, R. K., Golden, D. M., Bowman, C. T., Davidson, D. F. 2007; 111 (19): 4062-4072

  Abstract

  We have studied the two-channel thermal decomposition of methyl radicals in argon, involving the reactions CH3 + Ar --> CH + H2 + Ar (1a) and CH3 + Ar --> CH2 + H + Ar (1b), in shock tube experiments over the 2253-3527 K temperature range, at pressures between 0.7 and 4.2 atm. CH was monitored by continuous-wave, narrow-line-width laser absorption at 431.1311 nm. The collision-broadening coefficient for CH in argon, 2gamma(CH-Ar), was measured via repeated single-frequency experiments in the ethane pyrolysis system behind reflected shock waves. The measured 2gamma(CH-Ar) value and updated spectroscopic and molecular parameters were used to calculate the CH absorption coefficient at 431.1311 nm (23194.80 cm(-1)), which was then used to convert raw traces of fractional transmission to quantitative CH concentration time histories in the methyl decomposition experiments. The rate coefficient of reaction 1a was measured by monitoring CH radicals generated upon shock-heating highly dilute mixtures of ethane, C2H6, or methyl iodide, CH3I, in an argon bath. A detailed chemical kinetic mechanism was used to model the measured CH time histories. Within experimental uncertainty and scatter, no pressure dependence could be discerned in the rate coefficient of reaction 1a in the 0.7-4.2 atm pressure range. A least-squares, two-parameter fit of the current measurements, applicable between 2706 and 3527 K, gives k(1a) (cm(3) mol(-1) s(-1)) = 3.09 x 1015 exp[-40700/T (K)]. The rate coefficient of reaction 1b was determined by shock-heating dilute mixtures of C2H6 or CH3I and excess O2 in argon. During the course of reaction, OH radicals were monitored using the well-characterized R(1)(5) line of the OH A-X (0,0) band at 306.6871 nm (32606.52 cm(-1)). H atoms generated via reaction 1b rapidly react with O2, which is present in excess, forming OH. The OH traces are primarily sensitive to reaction 1b, reaction 9 (H + O2 --> OH + O) and reaction 10 (CH3 + O2 --> products), where the rate coefficients of reactions 9 and 10 are relatively well-established. No pressure dependence could be discerned for reaction 1b between 1.1 and 3.9 atm. A two-parameter, least-squares fit of the current data, valid over the 2253-2975 K temperature range, yields the rate expression k(1b) (cm(3) mol(-1) s(-1)) = 2.24 x 10(15) exp[-41600/T (K)]. Theoretical calculations carried out using a master equation/RRKM analysis fit the measurements reasonably well.

  View details for DOI 10.1021/jp0677187

  View details for Web of Science ID 000246341200040

  View details for PubMedID 17388279

• Shock-induced behavior in micron-sized water aerosols PHYSICS OF FLUIDS Hanson, T. C., Davidson, D. F., Hanson, R. K. 2007; 19 (5)

  View details for DOI 10.1063/1.2736082

  View details for Web of Science ID 000246892700035

• A diode laser sensor for rapid, sensitive measurements of gas temperature and water vapour concentration at high temperatures and pressures MEASUREMENT SCIENCE & TECHNOLOGY Rieker, G. B., Li, H., Liu, X., Jeffries, J. B., Hanson, R. K., Allen, M. G., Wehe, S. D., Mulhall, P. A., Kindle, H. S. 2007; 18 (5): 1195-1204

  View details for DOI 10.1088/0957-0233/18/5/005

  View details for Web of Science ID 000246553100007

• Measurements of spectral parameters of water-vapour transitions near 1388 and 1345 nm for accurate simulation of high-pressure absorption spectra MEASUREMENT SCIENCE & TECHNOLOGY Liu, X., Jeffries, J. B., Hanson, R. K. 2007; 18 (5): 1185-1194

  View details for DOI 10.1088/0957-0233/18/5/004

  View details for Web of Science ID 000246553100006

• Design of a fiber-coupled mid-infrared fuel sensor for pulse detonation engines AIAA JOURNAL Klingbeil, A. E., Jeffries, J. B., Hanson, R. K. 2007; 45 (4): 772-778

  View details for DOI 10.2514/1.26504

  View details for Web of Science ID 000245345400005

• Measurements of near-IR water vapor absorption at high pressure and temperature APPLIED PHYSICS B-LASERS AND OPTICS Rieker, G. B., Liu, X., Li, H., Jeffries, J. B., Hanson, R. K. 2007; 87 (1): 169-178

  View details for DOI 10.1007/s00340-006-2523-4

  View details for Web of Science ID 000244820600030

• Single-cycle unsteady nozzle phenomena in pulse detonation engines AIAA/ASME/SAE/ASEE 41st Joint Propulsion Conference Owens, Z. C., Hanson, R. K. AMER INST AERONAUT ASTRONAUT. 2007: 325–37

  View details for DOI 10.2514/1-22415

  View details for Web of Science ID 000244983700009

• Experimental study of H2O spectroscopic parameters in the near-IR (6940-7440cm(-1)) for gas sensing applications at elevated temperature JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Liu, X., Zhou, X., Jeffries, J. B., Hanson, R. K. 2007; 103 (3): 565-577

  View details for DOI 10.1016/j.jqsrt.2006.07.008

  View details for Web of Science ID 000242562100010

• Wavelength-scanned tunable diode laser temperature measurements in a model gas turbine combustor AIAA JOURNAL Zhou, X., Jeffries, J. B., Hanson, R. K., Li, G., Gutmark, E. J. 2007; 45 (2): 420-425

  View details for DOI 10.2514/1.26624

  View details for Web of Science ID 000244146200012

• Measurement of nonuniform temperature distributions using line-of-sight absorption spectroscopy AIAA 44th Aerospace Sciences Meeting and Exhibit Liu, X., Jeffries, J. B., Hanson, R. K. AMER INST AERONAUT ASTRONAUT. 2007: 411–19

  View details for DOI 10.2514/1.26708

  View details for Web of Science ID 000244146200011

• Sensing and control of combustion instabilities in swirl-stabilized combustors using diode-laser absorption AIAA/ASME/SAE/ASEE 42nd Joint Propulsion Conference Li, H., Zhou, X., Jeffries, J. B., Hanson, R. K. AMER INST AERONAUT ASTRONAUT. 2007: 390–98

  View details for DOI 10.2514/1.24774

  View details for Web of Science ID 000244146200009

• Thermal decomposition of toluene: Overall rate and branching ratio PROCEEDINGS OF THE COMBUSTION INSTITUTE Oehlschlaeger, M. A., Davidson, D. F., Hanson, R. K. 2007; 31: 211-219

  View details for DOI 10.1016/j.proci.2006.07.002

  View details for Web of Science ID 000252858000015

• Combustion Stability Regimes of Hydrogen Jets in Supersonic Crossflow 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Heltsley, W. N., Snyder, J. A., Cheung, C. C., Mungal, M. G., Hanson, R. K. 2007

  View details for DOI 10.2514/6.2007-5401

• Development of an Aerosol Shock Tube for Kinetic Studies of Low-Vapor-Pressure Fuels 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Haylett, D. R., Davidson, D. F., Hanson, R. K. 2007

  View details for DOI 10.2514/6.2007-5678

• Simultaneous Mid-IR Measurement of Equivalence Ratio and Temperature in a JP-10-Fueled Pulsed Detonation Engine 45th AIAA Aerospace Sciences Meeting and Exhibit Barbour, E. A., Hanson, R. K., Hutcheson, P., Brophy, C., Sinibaldi, J. O. 2007

  View details for DOI 10.2514/6.2007-232

• Transient Plasma Ignition for Delay Reduction in Pulse Detonation Engines 45th AIAA Aerospace Sciences Meeting and Exhibit Cathey, C., Wang, F., Tang, T., Kuthi, A., Gundersen, M., Sinibaldi, J. O., Brophy, C., Barbour, E. A., Hanson, R. K., Hoke, J., Schauer, F., Corrigan, J., Yu, J. 2007

  View details for DOI 10.2514/6.2007-443

• Measurements of CO2 and H2O Near 2.7 µm Using Tunable Diode Laser Absorption 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Farooq, A., Li, H., Jeffries, J. B., Hanson, R. K. 2007

  View details for DOI 10.2514/6.2007-5015

• Pressure-Sensitive Paint Measurements of Sonic Jet Injection into Supersonic Crossflow 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Snyder, J. A., Chang, L. S., Nakakita, K., Heltsley, W. N., Mungal, M. G., Hanson, R. K. 2007

  View details for DOI 10.2514/6.2007-5418

• Jet Fuel Ignition Delay Times and Modeling: Studies at High Pressures and Low Temperatures in a Shock Tube 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Vasu, S. S., Davidson, D. F., Hanson, R. K. 2007

  View details for DOI 10.2514/6.2007-5671

• Shock Tube Studies of Soot Formation in Heptane and Heptane/DME Mixtures 45th AIAA Aerospace Sciences Meeting and Exhibit Hong, Z., Davidson, D. F., Hanson, R. K. 2007

  View details for DOI 10.2514/6.2007-774

• Shock Tube Studies of Soot Formation in Rich Heptane/Oxygen Mixtures with DME/Acetone/Butanal Additives WSS/CI Fall Meeting Hong, Z., Davidson, D. F., Hanson, R. K. 2007
• Facilities for the Validation of Line-of-Sight Combustion Gas Monitors for Coal-Fire Boilers 17th Annual Joint ISA POWID/EPRI Controls and Instrumentation Conference and 50th Annual ISA POWID Symposium Hanson, R. K., Haswell, J., Himes, R., Jeffries, J. B., Muncy, J., Padgett, E., Sorge, J. N. 2007
• Combustion Stability Regimes of Hydrogen Jets in Supersonic Crossflow 43rd AIAA/ASME/SAE/ASE Joint Propulsion Conference Heltsley, W. N., Snyder, J. A., Cheung, C. C., Mungal, M. G., Hanson, R. K. 2007

  View details for DOI 10.2514/6.2007-5401

• Two-wavelength mid-IR Absorption Sensor for Simultaneous Temperature and n-Heptane Concentration Experiments 5th U.S. Combustion Meeting Klingbeil, A. E., Porter, J. M., Jeffries, J. B., Hanson, R. K. 2007
• Methylcyclohexane Oxidation: Shock Tube Experiments and Modeling Over a Wide Range of Conditions 5th U.S. National Combustion Meeting Vasu, S. S., Parikh, N. N., Davidson, D. F., Hanson, R. K. 2007
• Jet Fuel Ignition Delay Times: Shock Tube Investigations at High Pressures 21st Int. Colloquium on the Dynamics of Explosions and Reactive Systems Vasu, S. S., Davidson, D. F., Hanson, R. K. 2007
• Shock Tube Ignition Delay Times and Modeling of Jet Fuel Mixtures 42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Vasu, S. S., Davidson, D. F., Hanson, R. K. 2007

  View details for DOI 10.2514/6.2006-4402

• Shock Tube Ignition Delay Times for Hydrogen-Oxygen-Argon Mixtures at Low Temperatures and Elevated Pressures WSS/CI Fall Meeting Pang, G. A., Davidson, D. F., Hanson, R. K. 2007
• Detection of Trace NO Conditions using 1-D NO-LIF Imaging 5th U.S. Combustion Meeting Yoo, J. H., Lee, T., Jeffries, J. B., Hanson, R. K. 2007
• A Diode-Laser Absorption Sensor for Temperature and Water Vapor in a Shock Tube 26th Int. Symp. On Shock Waves Li, H., Farooq, A., Cook, R. C., Davidson, D. F., Jeffries, J. B., Hanson, R. K. 2007

  View details for DOI 10.1007/978-3-540-85168-4_65

• Optimized Two-Line Tracer PLIF Measurements of Temperature and Composition in an IC engine WSS/CI Fall Meeting Rothamer, D. A., Snyder, J. A., Steeper, R. R., Hanson, R. K. 2007
• Comparison of Wavelength Modulation and Direct Absorption Spectroscopy for Measurements of Gas Temperature in a Scramjet Combustor 5th U.S. Combustion Meeting Rieker, G. B., Jeffries, J. B., Hanson, R. K. 2007
• Experimental evaluation of strategies for quantitative laser-induced-fluorescence imaging of nitric oxide in high-pressure flames (1-60 bar) PROCEEDINGS OF THE COMBUSTION INSTITUTE Lee, T., Jeffries, J. B., Hanson, R. K. 2007; 31: 757-764

  View details for DOI 10.1016/j.proci.2006.07.090

  View details for Web of Science ID 000252858000075

• High-temperature measurements of the rates of the reactions CH2O+Ar -> Products and CH2O+O-2 -> Products PROCEEDINGS OF THE COMBUSTION INSTITUTE Vasudevan, V., Davidson, D. F., Hanson, R. K., Bowman, C. T., Golden, D. M. 2007; 31: 175-183

  View details for DOI 10.1016/j.proci.2006.07.017

  View details for Web of Science ID 000252858000011

• Tunable mid-IR laser absorption sensor for time-resolved hydrocarbon fuel measurements PROCEEDINGS OF THE COMBUSTION INSTITUTE Klingbeil, A. E., Jeffries, J. B., Hanson, R. K. 2007; 31: 807-815

  View details for DOI 10.1016/j.proci.2006.07.228

  View details for Web of Science ID 000252858000081

• In-cylinder gas temperature and water concentration measurements in HCCI engines using a multiplexed-wavelength diode-laser system: Sensor development and initial demonstration PROCEEDINGS OF THE COMBUSTION INSTITUTE Mattison, D. W., Jeffries, J. B., Hanson, R. K., Steeper, R. R., De Zilwa, S., Dec, J. E., Sjoberg, M., Hwang, W. 2007; 31: 791-798

  View details for DOI 10.1016/j.proci.2006.07.048

  View details for Web of Science ID 000252858000079

• Rapid measurements of temperature and H2O concentration in IC engines with a spark plug-mounted diode laser sensor PROCEEDINGS OF THE COMBUSTION INSTITUTE Rieker, G. B., Li, H., Liu, X., Liu, J. T., Jeffries, J. B., Hanson, R. K., Allen, M. G., Wehe, S. D., Mulhall, P. A., Kindle, H. S., Kakuho, A., Sholes, K. R., Matsuura, T., Takatani, S. 2007; 31: 3041-3049

  View details for DOI 10.1016/j.proci.2006.07.158

  View details for Web of Science ID 000252858200156

• Methyl concentration time-histories during iso-octane and n-heptane oxidation and pyrolysis PROCEEDINGS OF THE COMBUSTION INSTITUTE Davidson, D. F., Oehlschlaeger, M. A., Hanson, R. K. 2007; 31: 321-328

  View details for DOI 10.1016/j.proci.2006.07.087

  View details for Web of Science ID 000252858000027

• Active control of lean blowout in a swirl-stabilized combustor using a tunable diode laser PROCEEDINGS OF THE COMBUSTION INSTITUTE Li, H., Zhou, X., Jeffries, J. B., Hanson, R. K. 2007; 31: 3215-3223

  View details for DOI 10.1016/j.proci.2006.07.006

  View details for Web of Science ID 000252858200177

• Investigation of the reaction of toluene with molecular oxygen in shock-heated gases COMBUSTION AND FLAME Oehlschlaeger, M. A., Davidson, D. F., Hanson, R. K. 2006; 147 (3): 195-208

  View details for DOI 10.1016/j.combustflame.2006.08.006

  View details for Web of Science ID 000242061400004

• Fuel distribution effects on pulse detonation engine operation and performance JOURNAL OF PROPULSION AND POWER Brophy, C. M., Hanson, R. K. 2006; 22 (6): 1155-1161

  View details for DOI 10.2514/1.18713

  View details for Web of Science ID 000242469900002

• Measurement of reflected-shock bifurcation over a wide range of gas composition and pressure SHOCK WAVES Petersen, E. L., Hanson, R. K. 2006; 15 (5): 333-340

  View details for DOI 10.1007/s00193-006-0032-3

  View details for Web of Science ID 000240126300005

• Experimental investigation of toluene plus H -> benzyl plus H-2 at high temperatures JOURNAL OF PHYSICAL CHEMISTRY A Oehlschlaeger, M. A., Davidson, D. F., Hanson, R. K. 2006; 110 (32): 9867-9873

  Abstract

  The reaction of toluene with hydrogen atoms yielding benzyl and molecular hydrogen, C(6)H(5)CH(3) + H --> C(6)H(5)CH(2) + H(2), was investigated using UV laser absorption of benzyl radicals at 266 nm in shock tube experiments. Test gas mixtures of toluene and ethyl iodide, an H-atom source, diluted in argon were heated in reflected shock waves to temperatures ranging from 1256 to 1667 K at total pressures around 1.7 bar. Measurement of laser absorption at 266 nm due to benzyl radicals allowed determination of the rate coefficient of the title reaction, reaction 1. A two-parameter best-fit Arrhenius expression for the rate determinations over the temperature range of these experiments is given by k(1)(T) = 1.33 x 10(15) exp(-14880 [cal/mol]/RT) [cm(3) mol(-1) s(-1)]. With the use of both the high-temperature shock tube measurements reported here and the rate coefficient determination of Ellis et al. (Ellis, C.; Scott, M. S.; Walker, R. W. Combust. Flame 2003, 132, 291) at 773 K the best-fit rate coefficient for reaction 1 can be described using a three-parameter Arrhenius expression by k(1)(T) = 6.47T (3.98) exp(-3384 [cal/mol]/RT) [cm(3) mol(-1) s(-1)].

  View details for DOI 10.1021/jp062567t

  View details for Web of Science ID 000239655800012

  View details for PubMedID 16898688

• Temperature- and pressure-dependent absorption cross sections of gaseous hydrocarbons at 3.39 mu m MEASUREMENT SCIENCE & TECHNOLOGY Klingbeil, A. E., Jeffries, J. B., Hanson, R. K. 2006; 17 (7): 1950-1957

  View details for DOI 10.1088/0957-0233/17/7/038

  View details for Web of Science ID 000238645900040

• High-temperature thermal decomposition of benzyl radicals JOURNAL OF PHYSICAL CHEMISTRY A Oehlschlaeger, M. A., Davidson, D. F., Hanson, R. K. 2006; 110 (21): 6649-6653

  Abstract

  The thermal decomposition of the benzyl radical was studied in shock tube experiments using ultraviolet laser absorption at 266 nm for detection of benzyl. Test gas mixtures of 50 and 100 ppm of benzyl iodide dilute in argon were heated in reflected shock waves to temperatures ranging from 1430 to 1730 K at total pressures around 1.5 bar. The temporal behavior of the 266 nm absorption allowed for determination of the benzyl absorption cross-section at 266 nm and the rate coefficient for benzyl decomposition, C6H5CH2 --> C7H6 + H. The rate coefficient for benzyl decomposition at 1.5 bar can be described using a two-parameter Arrhenius expression by k1(T) = 8.20 x 10(14) exp(-40 600 K/T) [s(-1)], and the benzyl absorption cross-section at 266 nm was determined to be sigma(benzyl) = 1.9 x 10(-17) cm2 molecule(-1) with no discernible temperature dependence over the temperature range of the experiments.

  View details for DOI 10.1021/jp0553961

  View details for Web of Science ID 000237831500011

  View details for PubMedID 16722678

• Development of a tunable diode laser sensor for measurements of gas turbine exhaust temperature APPLIED PHYSICS B-LASERS AND OPTICS Liu, X., Jeffries, J. B., Hanson, R. K., Hinckley, K. M., Woodmansee, M. A. 2006; 82 (3): 469-478

  View details for DOI 10.1007/s00340-005-2078-9

  View details for Web of Science ID 000235120200023

• Extension of wavelength-modulation spectroscopy to large modulation depth for diode laser absorption measurements in high-pressure gases APPLIED OPTICS Li, H. J., Rieker, G. B., Liu, X., Jeffries, J. B., Hanson, R. K. 2006; 45 (5): 1052-1061

  Abstract

  Tunable diode laser absorption measurements at high pressures by use of wavelength-modulation spectroscopy (WMS) require large modulation depths for optimum detection of molecular absorption spectra blended by collisional broadening or dense spacing of the rovibrational transitions. Diode lasers have a large and nonlinear intensity modulation when the wavelength is modulated over a large range by injection-current tuning. In addition to this intensity modulation, other laser performance parameters are measured, including the phase shift between the frequency modulation and the intensity modulation. Following published theory, these parameters are incorporated into an improved model of the WMS signal. The influence of these nonideal laser effects is investigated by means of wavelength-scanned WMS measurements as a function of bath gas pressure on rovibrational transitions of water vapor near 1388 nm. Lock-in detection of the magnitude of the 2f signal is performed to remove the dependence on detection phase. We find good agreement between measurements and the improved model developed for the 2f component of the WMS signal. The effects of the nonideal performance parameters of commercial diode lasers are especially important away from the line center of discrete spectra, and these contributions become more pronounced for 2f signals with the large modulation depths needed for WMS at elevated pressures.

  View details for Web of Science ID 000235387400028

  View details for PubMedID 16512549

• Time evolution and mixing characteristics of hydrogen and ethylene transverse jets in supersonic crossflows PHYSICS OF FLUIDS Ben-Yakar, A., Mungal, M. G., Hanson, R. K. 2006; 18 (2)

  View details for DOI 10.1063/1.2139684

  View details for Web of Science ID 000235663700019

• Advances in Diode Laser Sensors for Combustion and Propulsion Invited School of Mech. Engring. Dept. Seminar Hanson, R. K. 2006
• Diode Laser Sensors for Ground Testing 25th AIAA Aerodynamic Measurement Technology and Ground Testing Conference Hanson, R. K., Jeffries, J. B. 2006

  View details for DOI 10.2514/6.2006-3441

• Design and Characterization of the Stanford 6 Inch Expansion Tube 42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Heltsley, W. N., Snyder, J. A., Houle, A. J., Davidson, D. F., Mungal, M. G., Hanson, R. K. 2006

  View details for DOI 10.2514/6.2006-4443

• Sensing and control of combustion instabilities in swirl-stabilized combustors using diode-laser absorption 42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Li, H., Zhou, X., Jeffries, J. B., Hanson, R. K. 2006

  View details for DOI 10.2514/6.2006-4395

• Diode Laser Absorption Measurements of Supersonic Flow in an Expansion Tube 42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Houle, A., Nakakita, K., Heltsley, W. N., Jeffries, J. B., Hanson, R. K. 2006

  View details for DOI 10.2514/6.2006-4444

• 3.39 μm Laser Absorption Sensor for Ethylene and Propane Measurements in a Pulse Detonation Engine 44th AIAA Aerospace Sciences Meeting and Exhibit Klingbeil, A. E., Jeffries, J. B., Hanson, R. K. 2006

  View details for DOI 10.2514/6.2006-925

• Diode Laser Sensors for Combustion and Propulsion Flows JANNAF-41st Comb. Subcommittee/29th Airbreathing Prop. Subcommittee/23rd Prop. Sys. Hazards Subcommittee Meeting Hanson, R. K., Jeffries, J. B. 2006
• Visualization of High-Speed Flows using Infrared Planar Laser-Induced Fluorescence (IRPLIF) of CO and CO2 42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Rothamer, D. A., Hanson, R. K. 2006

  View details for DOI 10.2514/6.2006-4300

• Selection of NIR H2O absorption transitions for in-cylinder measurement of temperature in IC engines MEASUREMENT SCIENCE & TECHNOLOGY Zhou, X., Liu, X., Jeffries, J. B., Hanson, R. K. 2005; 16 (12): 2437-2445

  View details for DOI 10.1088/0957-0233/16/12/006

  View details for Web of Science ID 000234035500008

• Near-infrared diode laser absorption diagnostic for temperature and water vapor in a scramjet combustor APPLIED OPTICS Liu, J. T., Rieker, G. B., Jeffries, J. B., Gruber, M. R., Carter, C. D., Mathur, T., Hanson, R. K. 2005; 44 (31): 6701-6711

  Abstract

  Tunable diode laser absorption measurements of gas temperature and water concentration were made at the exit of a model scramjet combustor fueled on JP-7. Multiplexed, fiber-coupled, near-infrared distributed feedback lasers were used to probe three water vapor absorption features in the 1.34-1.47 microm spectral region (2v1 and vl + v3 overtone bands). Ratio thermometry was performed using direct-absorption wavelength scans of isolated features at a 4-kHz repetition rate, as well as 2f wavelength modulation scans at a 2-kHz scan rate. Large signal-to-noise ratios demonstrate the ability of the optimally engineered optical hardware to reject beam steering and vibration noise. Successful measurements were made at full combustion conditions for a variety of fuel/air equivalence ratios and at eight vertical positions in the duct to investigate spatial uniformity. The use of three water vapor absorption features allowed for preliminary estimates of temperature distributions along the line of sight. The improved signal quality afforded by 2f measurements, in the case of weak absorption, demonstrates the utility of a scanned wavelength modulation strategy in such situations.

  View details for Web of Science ID 000232938000020

  View details for PubMedID 16270559

• Development of a fast temperature sensor for combustion gases using a single tunable diode laser APPLIED PHYSICS B-LASERS AND OPTICS Zhou, X., Jeffries, J. B., Hanson, R. K. 2005; 81 (5): 711-722

  View details for DOI 10.1007/s00340-005-1934-y

  View details for Web of Science ID 000231881400022

• Measurement of aerosol size distribution functions by wavelength-multiplexed laser extinction APPLIED PHYSICS B-LASERS AND OPTICS Ma, L., Hanson, R. K. 2005; 81 (4): 567-576

  View details for DOI 10.1007/s00340-005-1913-3

  View details for Web of Science ID 000231460800021

• High-temperature UV absorption of methyl radicals behind shock waves JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Oehlschlaeger, M. A., Davidson, D. F., Hanson, R. K. 2005; 92 (4): 393-402

  View details for DOI 10.1016/j.jqsrt.2004.08.006

  View details for Web of Science ID 000226886300001

• High-temperature measurements of the reactions of OH with toluene and acetone JOURNAL OF PHYSICAL CHEMISTRY A Vasudevan, V., Davidson, D. F., Hanson, R. K. 2005; 109 (15): 3352-3359

  Abstract

  The reaction of hydroxyl [OH] radicals with toluene [C6H5CH3] was studied at temperatures between 911 and 1389 K behind reflected shock waves at pressures of approximately 2.25 atm. OH radicals were generated by rapid thermal decomposition of shock-heated tert-butyl hydroperoxide [(CH3)3-CO-OH], and monitored by narrow-line width ring dye laser absorption of the well-characterized R1(5) line of the OH A-X (0,0) band near 306.7 nm. OH time histories were modeled by using a comprehensive toluene oxidation mechanism. Rate constants for the reaction of C6H5CH3 with OH were extracted by matching modeled and measured OH concentration time histories in the reflected shock region. Detailed error analyses yielded an uncertainty estimate of +/-30% at 1115 K for the rate coefficient of this reaction. The current high-temperature data were fit with the lower temperature measurements of Tully et al. [J. Phys. Chem. 1981, 85, 2262-2269] to the following two-parameter form, applicable over 570-1389 K: k3 = (1.62 x 10(13)) exp(-1394/T [K]) [cm3 mol(-1) s(-1)]. The reaction between OH radicals and acetone [CH3COCH3] was one of the secondary reactions encountered in the toluene + OH experiments. Direct high-temperature measurements of this reaction were carried out at temperatures ranging from 982 to 1300 K in reflected shock wave experiments at an average total pressure of 1.65 atm. Uncertainty limits were estimated to be +/-25% at 1159 K. A two-parameter fit of the current data yields the following rate expression: k6 = (2.95 x 10(13)) exp(-2297/T [K]) [cm3 mol(-1) s(-1)].

  View details for DOI 10.1021/jp0501143

  View details for Web of Science ID 000228407700012

  View details for PubMedID 16833670

• Effect of heat loss on pulse-detonation-engine flow fields and performance JOURNAL OF PROPULSION AND POWER Radulescu, M. I., Hanson, R. K. 2005; 21 (2): 274-285

  View details for Web of Science ID 000227668400008

• Direct measurements of the reaction OH+CH2O -> HCO+H(2)Oat high temperatures INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Vasudevan, V., Davidson, D. F., Hanson, R. K. 2005; 37 (2): 98-109

  View details for DOI 10.1002/kin.20056

  View details for Web of Science ID 000226341900006

• Toluene LIF at elevated temperatures: implications for fuel-air ratio measurements APPLIED PHYSICS B-LASERS AND OPTICS Koban, W., Koch, J. D., Hanson, R. K., Schulz, C. 2005; 80 (2): 147-150

  View details for DOI 10.1007/s00340-004-1715-z

  View details for Web of Science ID 000226320700002

• Flowfield characterization and simulation validation of multiple-geometry PDEs using cesium-based velocimetry 30th International Symposium on Combustion Owens, Z. C., Mattison, D. W., Barbour, E. A., Morris, C. I., Hanson, R. K. ELSEVIER SCIENCE INC. 2005: 2791–2798

  View details for DOI 10.1016/j.proci.2004.08.050

  View details for Web of Science ID 000229944300122

• Mid-IR Laser Absorption Sensor for Ethylene in a Pulse Detonation Engine 41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Klingbeil, A. E., Jeffries, J. B., Hanson, R. K., Brophy, C. M., Sinibaldi, J. O., 2005

  View details for DOI 10.2514/6.2005-4375

• Measurements of Gas Temperature in the Arc-heater of a Large Scale Arcjet Facility using Tunable Diode Laser Absorption 43rd AIAA Aerospace Sciences Meeting and Exhibit Kim, S., Jeffries, J. B., Hanson, R. K., Raiche, G. A. 2005

  View details for DOI 10.2514/6.2005-900

• A Pulsed Detonation Tube with a Converging-Diverging Nozzle Operating at Different Pressure Ratios 43rd AIAA Aerospace Sciences Meeting and Exhibit Barbour, E. A., Hanson, R. K., Morris, C. I., Radulescu, M. I. 2005

  View details for DOI 10.2514/6.2005-1307

• Fast Temperature Sensor for Combustion Control Using H2O Diode Laser Absorption near 1.4 μm 43rd AIAA Aerospace Sciences Meeting and Exhibit Zhou, X., Jeffries, J. B., Hanson, R. K., Li, G., Gutmark, E. 2005

  View details for DOI 10.2514/6.2005-627

• Laser diagnostics and combustion chemistry for pulse detonation engines Combustion Processes in Propulsion Hanson, R. K., Mattison, D. W., Ma, L., Davidson, D. F., Sanders, S. T. edited by Roy, G. D. Elsevier. 2005: 365–376

  View details for DOI 10.1016/B978-012369394-5/50038-X

• Aeroengine Mass Flux Sensor Based on Laser Absorption Measurements of Oxygen Velocity and Density 41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Lyle, K., Jeffries, J. B., Hanson, R. K., Winter, M. M. 2005

  View details for DOI 10.2514/6.2005-3784

• Quantitative Temperature Measurements in High-Pressure Flames with Multi-Line NO-LIF Thermometer Joint Meeting of U.S. Sections of Combustion Institute Lee, T., Bessler, W., Kronemayer, H., Schulz, C., Jeffries, J. B., Hanson, R. K. 2005
• Shock tube measurements and modeling of ignition delay time in lean iso-octane/air 25th International Symposium on Shock Waves Vasu, S. S., Davidson, D. F., Hanson, R. K. 2005
• Real-time Measurements of C2H4 Concentration with Application to PDEs Operating on Oxygen and Air 41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Barbour, E. A., Ma, L., Jeffries, J. B., Hanson, R. K., Brophy, C., Sinibaldi, J. 2005

  View details for DOI 10.2514/6.2005-4376

• Tunable Diode-Laser Temperature Sensor for Evaluation of a Valveless Pulse Detonation Engine 43rd AIAA Aerospace Sciences Meeting and Exhibit Mattison, D. W., Liu, J. T., Jeffries, J. B., Hanson, R. K., Brophy, C. M., Sinibaldi, J. O. 2005

  View details for DOI 10.2514/6.2005-224

• Tunable Diode Laser Sensors for Harsh Combustion Environments with Applications to Pulse Detonation Engines and Internal Combustion Engines Joint Meeting of U.S. Sections of Combustion Institute Mattison, D. W., Jeffries, J. B., Hanson, R. K. 2005
• High-Temperature Measurements of the Rates of the Reactions CH2O+M= Products and CH2O+O2= Products WSS/CI Fall Meeting Davidson, D. F., Hanson, R. K., Bowman, C. T., Golden, D. M. 2005
• Rapid Measurements of Gas Temperature in a Swirl-Stabilized Flame Joint Meeting of U.S. Sections of Combustion Institute Zhou, X., Jeffries, J. B., Hanson, R. K., Lu, Q., Gutmark, E. J. 2005
• Unsteady Nozzle Design for Pulse Detonation Engines 41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Owens, Z. K., Hanson, R. K. 2005

  View details for DOI 10.2514/6.2005-3649

• High Temperature Measurements of the Reactions of OH with Toluene and Acetone 25th Int. Symp. on Shock Waves Vasudevan, V., Davidson, D. F., Hanson, R. K. 2005
• Shock Tube Measurements of Water and n-Dodecane Droplet Evaporation behind Shock Waves 43rd AIAA Aerospace Sciences Meeting and Exhibit Hanson, T. C., Davidson, D. F., Hanson, R. K. 2005

  View details for DOI 10.2514/6.2005-350

• High Temperature Measurements of Elementary OH Radical Reactions Joint Meeting of U.S. Sections of Combustion Institute Vasudevan, V., Davidson, D. F., Hanson, R. K. 2005
• Advances in Diode Laser Sensors for Combustion and Propulsion WSS/CI Fall Meeting Hanson, R. K., Jeffries, J. B. 2005
• Experimental Study of H2O Spectroscopic Parameters in the Near-IR 43rd AIAA Aerospace Sciences Meeting and Exhibit Liu, X., Zhou, X., Jeffries, J. B., Hanson, R. K. 2005

  View details for DOI 10.2514/6.2005-829

• Characterization of the Fuel Fill Process in a Multi-cycle Pulse Detonation Engine using a Diode-Laser Sensor 41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Ma, L., Jeffries, J. B., Hanson, R. K., Hinckley, K. M., Pinard, P. F., Dean, A. J. 2005

  View details for DOI 10.2514/6.2005-3834

• Methyl Concentration Time Histories during iso-Octane and n-Heptane Oxidation WSS/CI Fall Meeting Davidson, D. F., Oehlschlaeger, M. A., Hanson, R. K. 2005
• Tunable Diode Laser Absorption Sensor Applications to Aeropropulsion Testing NATO Applied Vehicle Technology Meeting Hanson, R. K., Jeffries, J. B., Allen, M. G. 2005
• Temperature Measurement using Ultraviolet Absorption of Carbon Dioxide behind Shock Waves Applied Optics Oehlschlaeger, M. A., Davidson, D. F., Hanson, R. K. 2005; 44 (31): 6599-6605

  View details for DOI 10.1364/AO.44.006599

• Diode Laser Sensor for Gas Temperature and H2O Concentration in a Scramjet Combustor Using Wavelength Modulation Spectroscopy 41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Rieker, G. B., Liu, J. T., Jeffries, J. B., Hanson, R. K., Mathur, T., Gruber, M. R., Carter, C. 2005

  View details for DOI 10.2514/6.2005-3710

• High-temperature ethane and propane decomposition 30th International Symposium on Combustion Oehlschlaeger, M. A., Davidson, D. F., Hanson, R. K. ELSEVIER SCIENCE INC. 2005: 1119–1127

  View details for DOI 10.1016/j.proci.2004.07.032

  View details for Web of Science ID 000229944200120

• Evaluation of pulse detonation engine modeling using laser-based temperature and OH concentration measurements 30th International Symposium on Combustion Mattison, D. W., Oehischlaeger, M. A., Morris, C. I., Owens, Z. C., Barbour, E. A., Jeffries, J. B., Hanson, R. K. ELSEVIER SCIENCE INC. 2005: 2799–2807

  View details for DOI 10.1016/j.proci.2004.08.026

  View details for Web of Science ID 000229944300123

• Carbon dioxide thermal decomposition: Observation of incubation ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS Oehlschlaeger, M. A., Davidson, D. F., Jeffries, J. B., Hanson, R. K. 2005; 219 (5): 555-567

  View details for Web of Science ID 000229077400003

• Predicting LIF signal strength for toluene and 3-pentanone under engine-related temperature and pressure conditions 30th International Symposium on Combustion Koban, W., Koch, J. D., Sick, V., Wermuth, N., Hanson, R. K., Schulz, C. ELSEVIER SCIENCE INC. 2005: 1545–1553

  View details for DOI 10.1016/j.proci.2004.08.119

  View details for Web of Science ID 000229944200168

• Oxygen quenching of toluene fluorescence at elevated temperatures APPLIED PHYSICS B-LASERS AND OPTICS Koban, W., Koch, J. D., Hanson, R. K., Schulz, C. 2005; 80 (6): 777-784

  View details for DOI 10.1007/s00340-005-1769-6

  View details for Web of Science ID 000228861000022

• The reaction of CH3+O-2: experimental determination of the rate coefficients for the product channels at high temperatures 30th International Symposium on Combustion Herbon, J. T., Hanson, R. K., Bowman, C. T., GOLDEN, D. M. ELSEVIER SCIENCE INC. 2005: 955–963

  View details for DOI 10.1016/j.proci.2004.08.094

  View details for Web of Science ID 000229944200102

• The ignition mechanism in irregular structure gaseous detonations 30th International Symposium on Combustion Radulescu, M. I., Sharpe, G. J., Lee, J. H., Kiyanda, C. B., Higgins, A. J., Hanson, R. K. ELSEVIER SCIENCE INC. 2005: 1859–1867

  View details for DOI 10.1016/j.proci.2004.08.047

  View details for Web of Science ID 000229944300018

• Shock tube measurements of toluene ignition times and OH concentration time histories 30th International Symposium on Combustion Vasudevan, V., Davidson, D. F., Hanson, R. K. ELSEVIER SCIENCE INC. 2005: 1155–1163

  View details for DOI 10.1016/j.proci.2004.07.039

  View details for Web of Science ID 000229944200124

• Shock tube ignition measurements of iso-octane/air and toluene/air at high pressures 30th International Symposium on Combustion Davidson, D. F., Gauthier, B. M., Hanson, R. K. ELSEVIER SCIENCE INC. 2005: 1175–1182

  View details for DOI 10.1016/j.proci.2004.08.004

  View details for Web of Science ID 000229944200126

• UV absorption of CO2 for temperature diagnostics of hydrocarbon combustion applications 30th International Symposium on Combustion Jeffries, J. B., Schulz, C., Mattison, D. W., Oehlschlaeger, M. A., Bessler, W. G., Lee, T., Davidson, D. F., Hanson, R. K. ELSEVIER SCIENCE INC. 2005: 1591–1599

  View details for DOI 10.1016/j.proci.2004.08.009

  View details for Web of Science ID 000229944200173

• Large-modulation-depth 2f spectroscopy with diode lasers for rapid temperature and species measurements in gases with blended and broadened spectra APPLIED OPTICS Liu, J. T., Jeffries, J. B., Hanson, R. K. 2004; 43 (35): 6500-6509

  Abstract

  A method that uses tunable diode lasers is developed for rapid temperature and concentration measurements of gases with highly broadened and congested spectra. Wavelength modulation absorption spectroscopy with 2f detection is utilized, because this derivative method offers benefits in dealing with blended spectral features. The 2f signal depends critically on the modulation depth of the laser alpha, which is increased to values above those typically achieved when wavelength modulation spectroscopy with diode lasers is performed. The 2f method with large modulation depths is validated by using near-IR diode lasers to probe pressure-broadened water-vapor features in the 1.4-microm region over a range of temperatures from 296 to 800 K and at pressures as high as 20 atm. Modulation depths as high as alpha = 0.8 cm(-1) are attained at modulation frequencies of 50 kHz and measurement bandwidths of 15 kHz. Comparisons of experimental results with 2f simulations, based on the HITRAN spectral database, provide confirmation of the capability of this method for rapid measurements of gas temperature and species concentration.

  View details for Web of Science ID 000225661400018

  View details for PubMedID 15617289

• Shock tube determination of ignition delay times in full-blend and surrogate fuel mixtures COMBUSTION AND FLAME Gauthier, B. M., Davidson, D. F., Hanson, R. K. 2004; 139 (4): 300-311

  View details for DOI 10.1016/j.combustflame.2004.08.015

  View details for Web of Science ID 000225892700003

• Ultraviolet absorption cross-sections of hot carbon dioxide CHEMICAL PHYSICS LETTERS Oehlschlaeger, M. A., Davidson, D. F., Jeffries, J. B., Hanson, R. K. 2004; 399 (4-6): 490-495

  View details for DOI 10.1016/j.cplett.2004.10.060

  View details for Web of Science ID 000225389800037

• Rayleigh-calibrated fluorescence quantum yield measurements of acetone and 3-pentanone APPLIED OPTICS Koch, J. D., Hanson, R. K., Koban, W., Schulz, C. 2004; 43 (31): 5901-5910

  Abstract

  We measured fluorescence quantum yields of acetone and 3-pentanone as a pure gas and with nitrogen diluent at room temperature at 20, 507, and 1013 mbar using 248, 266, and 308 nm excitation by calibrating the optical collection system with Rayleigh scattering from nitrogen. At 20 mbar with 308-nm excitation, the fluorescence quantum yields for acetone and 3-pentanone are 7 +/- 1 x 10(-4) and 1.1 +/- 0.2 x 10(-3), respectively, and each decreases with decreasing excitation wavelength. These directly measured values are significantly lower than earlier ones that were based on a chain of relative measurements. The observed pressure and excitation wavelength dependence is in qualitative agreement with a previously developed fluorescence quantum yield model, but the absolute numbers disagree. Changing acetone's fluorescence rate constant to 3 x 10(5) s(-1) from its previous value of 8 x 10(5) s(-1) resulted in good agreement between our measurements and the model.

  View details for Web of Science ID 000224779900020

  View details for PubMedID 15540449

• Near-infrared diode laser hydrogen fluoride monitor for dielectric etch JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A Xu, N., Pirkle, D. R., Jeffries, J. B., McMillin, B., Hanson, R. K. 2004; 22 (6): 2479-2486

  View details for DOI 10.1116/1.1809124

  View details for Web of Science ID 000225505900045

• Mixing efficiency measurements using a modified cold chemistry technique EXPERIMENTS IN FLUIDS Rossmann, T., Mungal, M. G., Hanson, R. K. 2004; 37 (4): 566-576

  View details for DOI 10.1007/s00348-004-0851-x

  View details for Web of Science ID 000224516100010

• Interpreting shock tube ignition data INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Davidson, D. F., Hanson, R. K. 2004; 36 (9): 510-523

  View details for DOI 10.1002/kin.20024

  View details for Web of Science ID 000223297200006

• Comment on "analytical model for the impulse of single-cycle pulse detonation tube" JOURNAL OF PROPULSION AND POWER Radulescu, M. I., Hanson, R. K. 2004; 20 (5): 956-957

  View details for Web of Science ID 000223932600025

• UV planar laser induced fluorescence imaging of hot carbon dioxide in a high-pressure flame APPLIED PHYSICS B-LASERS AND OPTICS Lee, T., Bessler, W. G., Schulz, C., Patel, M., Jeffries, J. B., Hanson, R. K. 2004; 79 (4): 427-430

  View details for DOI 10.1007/s00340-004-1595-2

  View details for Web of Science ID 000223260300006

• Diode laser-induced infrared fluorescence of water vapour MEASUREMENT SCIENCE & TECHNOLOGY Li, H. J., Hanson, R. K., Jeffries, J. B. 2004; 15 (7): 1285-1290

  View details for DOI 10.1088/0957-0233/15/7/009

  View details for Web of Science ID 000222765600010

• Absorption and fluorescence of toluene vapor at elevated temperatures PHYSICAL CHEMISTRY CHEMICAL PHYSICS Koban, W., Koch, J. D., Hanson, R. K., Schulz, C. 2004; 6 (11): 2940-2945

  View details for Web of Science ID 000222357600023

• High-temperature thermal decomposition of isobutane and n-butane behind shock waves JOURNAL OF PHYSICAL CHEMISTRY A Oehlschlaeger, M. A., Davidson, D. F., Hanson, R. K. 2004; 108 (19): 4247-4253

  View details for DOI 10.1021/jp0313627

  View details for Web of Science ID 000221302900012

• Validation of a thermal decomposition mechanism of formaldehyde by detection of CH2O and HCO behind shock waves INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Friedrichs, G., Davidson, D. F., Hanson, R. K. 2004; 36 (3): 157-169

  View details for DOI 10.1002/kin.10183

  View details for Web of Science ID 000189245700003

• Shock tube measurements of branched alkane ignition times and OH concentration time histories INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Oehlschlaeger, M. A., Davidson, D. F., Herbon, J. T., Hanson, R. K. 2004; 36 (2): 67-78

  View details for DOI 10.1002/kin.10173

  View details for Web of Science ID 000188088300001

• Wavelength modulation absorption spectroscopy with 2f detection using multiplexed diode lasers for rapid temperature measurements in gaseous flows APPLIED PHYSICS B-LASERS AND OPTICS Liu, J. T., Jeffries, J. B., Hanson, R. K. 2004; 78 (3-4): 503-511

  View details for DOI 10.1007/s00340-003-1380-7

  View details for Web of Science ID 000220086600042

• Determination of O2, CO and H2O Concentration and Gas Temperature in a Coal-fired Utility Boiler using a Wavelength-multiplexed Tunable Diode Laser Sensor poster at 30th Int. Combustion Symp. Sappey, A., Howell, J., Masterson, P., Hofvander, H., Jeffries, J. B., Zhou, X., Hanson, R. K. 2004
• A New Facility for the Study of Shock Wave-Induced Combustion of Liquid Fuels 42nd AIAA Aerospace Sciences Meeting and Exhibit Kashdan, J. T., Hanson, T. C., Piper, E. L., Davidson, D. F., Hanson, R. K. 2004

  View details for DOI 10.2514/6.2004-468

• Wavelength Modulation Absorption Spectroscopy with 2f Detection for Combustion Temperature Measurements Using Multiplexed Near-Infrared Diode Lasers 42nd AIAA Aerospace Sciences Meeting and Exhibit Liu, J. T., Jeffries, J. B., Hanson, R. K. 2004

  View details for DOI 10.2514/6.2004-647

• The Effect of Wall Heat Loss on the Flow Fields in a Pulse-Detonation Wave Engine 42nd AIAA Aerospace Sciences Meeting and Exhibit Radulescu, M. I., Morris, C. I., Hanson, R. K., 2004

  View details for DOI 10.2514/6.2004-1124

• A Shock Tube Study of the Oxidation of 1,3-Butadiene 42nd AIAA Aerospace Sciences Meeting and Exhibit Libby, C. S., Davidson, D. F., Hanson, R. K. 2004

  View details for DOI 10.2514/6.2004-1322

• Carbon Dioxide UV Laser-Induced Fluorescence Imaging in High-Pressure Flames 42nd AIAA Aerospace Sciences Meeting and Exhibit Lee, T., Jeffries, J. B., Hanson, R. K., Bessler, W. G., Schulz, C. 2004

  View details for DOI 10.2514/6.2004-386

• Advances in Laser-Based Sensors for Propulsion Systems 24th AIAA Aerodynamic Measurement Technology and Ground Testing Conference Hanson, R. K., Jeffries, J. B. 2004

  View details for DOI 10.2514/6.2004-2476

• The Impact of Heat Transfer on PDE Performance and its Associated Flowfield poster at 30th Int. Combustion Symp. Barbour, E. A., Owens, Z. C., Morris, C. I., Hanson, R. K. 2004
• FARLIF: Myths and Reality poster at 30th Int. Combustion Symp. Koban, W., Koch, J. D., Hanson, R. K., Schulz, C. 2004
• Quantitative Multi-Line NO-LIF Temperature Imaging in Flames over a Wide Pressure Range Laser Applications to Chemical, Security and Environmental Analysis Bessler, W. G., Jeffries, J. B., Hanson, R. K. 2004
• A Wavelength-Multiplexed Diode Laser Sensor for Temperature Measurements in Pulse Detonation Engines 42nd AIAA Aerospace Sciences Meeting and Exhibit Hinckley, K. M., Jeffries, J. B., Hanson, R. K. 2004

  View details for DOI 10.2514/6.2004-713

• The Impact of a Converging-Diverging Nozzle on PDE Performance and its Associated Flowfield 42nd AIAA Aerospace Sciences Meeting and Exhibit Barbour, E. A., Owens, Z. C., Morris, C. I., Hanson, R. K. 2004

  View details for DOI 10.2514/6.2004-867

• UV Absorption of CO2 for Temperature Diagnostics Laser Applications to Chemical and Environmental Analysis Barbour, E., Oehlsclaeger, M. A., Mattison, D. W., Davidson, F. F., Schulz, C., Jeffries, J. B., Hanson, R. K. 2004
• Shock Tube Measurements of Ignition Delay Times in N-Heptane, Gasoline and Surrogate Fuel Mixtures poster at 30th Int. Combustion Symp. Gauthier, B. M., Davidson, D. F., Hanson, R. K. 2004
• Nitric-oxide planar laser-induced fluorescence applied to low-pressure hypersonic flow fields for the imaging of mixture fraction APPLIED OPTICS Rossmann, T., Mungal, M. G., Hanson, R. K. 2003; 42 (33): 6682-6695

  Abstract

  The scalar-field imaging of a hypersonic mixing flow is performed in a mixing facility that is shock tunnel driven. The instantaneous mixture-fraction field of a hypersonic two-dimensional mixing layer (M1 = 5.1, M2 = 0.3) is determined with a temperature-insensitive planar laser-induced fluorescence technique with nitric oxide (NO) as the tracer species. Single-shot images are obtained with the broadband excitation of a reduced temperature-sensitivity transition in the A2 sigma+ <-- X2 II(1/2) (0, 0) band of NO near 226 nm. The instantaneous mixture-fraction field at a convective Mach number of 2.64 is shown to be nearly identical to a typical diffusive process, supporting the notion of gradient-transport mixing models for highly compressible mixing layers.

  View details for Web of Science ID 000186612400019

  View details for PubMedID 14658473

• In situ measurements of HCl during plasma etching of poly-silicon using a diode laser absorption sensor MEASUREMENT SCIENCE & TECHNOLOGY Kim, S., Klimecky, P., Jeffries, J. B., Terry, F. L., Hanson, R. K. 2003; 14 (9): 1662-1670

  View details for Web of Science ID 000185699400019

• Strategies for laser-induced fluorescence detection of nitric oxide in high-pressure flames. III. Comparison of A-X excitation schemes APPLIED OPTICS Bessler, W. G., Schulz, C., Lee, T., Jeffries, J. B., Hanson, R. K. 2003; 42 (24): 4922-4936

  Abstract

  Laser-induced fluorescence (LIF) has proven a reliable technique for nitric oxide (NO) diagnostics in practical combustion systems. However, a wide variety of different excitation and detection strategies are proposed in the literature without giving clear guidelines of which strategies to use for a particular diagnostic situation. We give a brief review of the high-pressure NO LIF diagnostics literature and compare strategies for exciting selected transitions in the A-X(0, 0), (0, 1), and (0, 2) bands using a different detection bandpass. The strategies are compared in terms of NO LIF signal strength, attenuation of laser and signal light in the hot combustion gases, signal selectivity against LIF interference from O2 and CO2, and temperature and pressure sensitivity of the LIF signal. The discussion is based on spectroscopic measurements in laminar premixed methane-air flames at pressures between 1 and 60 bars and on NO and O2 LIF spectral simulations.

  View details for Web of Science ID 000184940000019

  View details for PubMedID 12952340

• Development of a sensor for temperature and water concentration in combustion gases using a single tunable diode laser MEASUREMENT SCIENCE & TECHNOLOGY Zhou, X., Liu, X., Jeffries, J. B., Hanson, R. K. 2003; 14 (8): 1459-1468

  View details for Web of Science ID 000184917300037

• Carbon dioxide UV laser-induced fluorescence in high-pressure flames CHEMICAL PHYSICS LETTERS Bessler, W. G., Schulz, C., Lee, T., Jeffries, J. B., Hanson, R. K. 2003; 375 (3-4): 344-349

  View details for DOI 10.1016/S0009-2614(03)00858-3

  View details for Web of Science ID 000183966200013

• Improved turbulent boundary-layer model for shock tubes AIAA 31st Fluid Dynamics Conference Petersen, E. L., Hanson, R. K. AMER INST AERONAUT ASTRONAUT. 2003: 1314–22

  View details for Web of Science ID 000183990800011

• A shock tube study of the reaction NH2+CH4 -> NH3+CH3 and comparison with transition state theory INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Song, S. H., Golden, D. M., Hanson, R. K., Bowman, C. T., Senosiain, J. P., Musgrave, C. B., Friedrichs, G. 2003; 35 (7): 304-309

  View details for DOI 10.1002/kin.10131

  View details for Web of Science ID 000183601300004

• Pulse detonation engine characterization and control using tunable diode-laser sensors JOURNAL OF PROPULSION AND POWER Mattison, D. W., Brophy, C. M., Sanders, S. T., Ma, L., Hinckley, K. M., Jeffries, J. B., Hanson, R. K. 2003; 19 (4): 568-572

  View details for Web of Science ID 000184193400006

• Time-of-flight diode-laser velocimeter using a locally seeded atomic absorber: Application in a pulse detonation engine 23rd International Symposium on Shock Waves Sanders, S. T., Mattison, D. W., Jeffries, J. B., Hanson, R. K. SPRINGER. 2003: 435–41

  View details for DOI 10.1007/s00193-003-0182-5

  View details for Web of Science ID 000183671200001

• Strategies for laser-induced fluorescence detection of nitric oxide in high-pressure flames. II. A-X(0,1) excitation 8th Topical Meeting on Laser Applications to Chemical and Environmental Analysis (8th LACEA) Bessler, W. G., Schulz, C., Lee, T., Jeffries, J. B., Hanson, R. K. OPTICAL SOC AMER. 2003: 2031–42

  Abstract

  A-X(0,1) excitation is a promising new approach for NO laser-induced fluorescence (LIF) diagnostics at elevated pressures and temperatures. We present what to our knowledge are the first detailed spectroscopic investigations within this excitation band using wavelength-resolved LIF measurements in premixed methane/air flames at pressures between 1 and 60 bar and a range of fuel/air ratios. Interference from O2 LIF is a significant problem in lean flames for NO LIF measurements, and pressure broadening and quenching lead to increased interference with increased pressure. Three different excitation schemes are identified that maximize NO/O2 LIF signal ratios, thereby minimizing the O2 interference. The NO LIF signal strength, interference by hot molecular oxygen, and temperature dependence of the three schemes are investigated.

  View details for Web of Science ID 000182386600003

  View details for PubMedID 12716143

• Temperature and excitation wavelength dependencies of 3-pentanone absorption and fluorescence for PLIF applications APPLIED PHYSICS B-LASERS AND OPTICS Koch, J. D., Hanson, R. K. 2003; 76 (3): 319-324

  View details for DOI 10.1007/s00340-002-1084-4

  View details for Web of Science ID 000182758000020

• Diode Laser Absorption Diagnostics for Measurements in Practical Combustion Flow Fields 39th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Liu, J. Y., Jeffries, J. B., Hanson, R. K. 2003

  View details for DOI 10.2514/6.2003-4581

• Shock Tube Measurements of Branched Alkane Ignition Times and OH Concentration Time Histories 41st Aerospace Sciences Meeting and Exhibit Oehlschlaeger, M. A., Davidson, D. F., Herbon, J. T., Hanson, R. K. 2003

  View details for DOI 10.2514/6.2003-830

• UV Optical Diagnostics for PDE Applications 39th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Mattison, D. W., Barbour, E. A., Oehlschlaeger, M. A., Owens, Z. C., Hanson, R. K. 2003

  View details for DOI 10.2514/6.2003-4685

• Two-phase Fuel Measurements Using a Diode-laser Sensor 41st Aerospace Sciences Meeting and Exhibit Ma, L., Jeffries, J. B., Hanson, R. K. 2003

  View details for DOI 10.2514/6.2003-401

• CO Absorption Measurements with a Mid-IR Quantum Laser for Engine Exhaust Applications 41st Aerospace Sciences Meeting and Exhibit Wehe, S., Allen, M., Liu, X., Jeffries, J. B., Hanson, R. K. 2003

  View details for DOI 10.2514/6.2003-588

• A Photophysics Model for 3-pentanone PLIF: Temperature, Pressure, and Excitation Wavelength Dependences 41st Aerospace Sciences Meeting and Exhibit Koch, J. D., Hanson, R. K. 2003

  View details for DOI 10.2514/6.2003-403

• Overview: MURI Center on spectroscopic and time domain detection of trace explosives in condensed and vapor phases Conference on Detection and Remediation Technologies for Mines and Minelike Targets VIII Spicer, J. B., Dagdigian, P., Osiander, R., Miragliotta, J., Zhang, X. C., Kersting, R., Crosley, D., Hanson, R., Jeffries, J. SPIE-INT SOC OPTICAL ENGINEERING. 2003: 1088–1094

  View details for Web of Science ID 000186143400105

• Room-temperature mid-IR lasers for on-line measurements of trace combustion generated pollutants 2nd IEEE International Conference on Sensors Wehe, S., Allen, M., Liu, X., Jeffries, J., Hanson, R. IEEE. 2003: 795–800

  View details for Web of Science ID 000189435400166

• Shock Tube Measurements of Ethane, Propane and Butane Decomposition using Laser Absorption of CH3 Fall WSS/CI meeting Oehlschlaeger, M. A., Davidson, D. F., Hanson, R. K. 2003
• UV Laser-induced Fluorescence of Carbon Dioxide in High-Pressure Flames 3rd Joint Meeting of the U.S. Sections of the Combustion Institute Bessler, W. G., Schulz, C., Lee, T., Jeffries, J. B., Hanson, R. K. 2003
• Quantitative NO-LIF Temperature Imaging in High-Pressure Flames 41st Aerospace Sciences Meeting and Exhibit Lee, T., Jeffries, J. B., Hanson, R. K., Bessler, W. G., Schulz, C. 2003

  View details for DOI 10.2514/6.2003-583

• Strategies for Quantitative NO Concentration and Temperature Measurements by NO LIF in High-Pressure Flames 3rd Joint Meeting of the U.S. Sections of the Combustion Institute Bessler, W. G., Lee, T., Schulz, C., Jeffries, J. B., Hanson, R. K. 2003
• Propane Fuel Monitoring in Pulse Detonation Engines using a Diode-Laser Sensor 39th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Ma, L., Hinkley, K., Jeffries, J. B., Hanson, R. K. 2003

  View details for DOI 10.2514/6.2003-4684

• Pulse Detonation Tube Characterization using Laser Absorption Spectroscopy 41st Aerospace Sciences Meeting and Exhibit Mattison, D. W., Oehlschlaeger, M. A., Jeffries, J. B., Hanson, R. K. 2003

  View details for DOI 10.2514/6.2003-713

• Diode Laser Sensors for Combustion Control 41st Aerospace Sciences Meeting and Exhibit Zhou, X., Liu, X., Jeffries, J. B., Hanson, R. K. 2003

  View details for DOI 10.2514/6.2003-1010

• Detonation Studies of High-frequency-operation Pulse Detonation Engine with Air/Hydrogen 41st Aerospace Sciences Meeting and Exhibit Zhang, F. Y., Fujiwara, T., Miyaska, T., Nakayama, E., Hattori, T., Hanson, R. K., 2003

  View details for DOI 10.2514/6.2003-1169

• A Shock Tube Study of Iso-Octane and Toluene Ignition at High Pressures Fall 2003 WSS/CI meeting Gauthier, B. M., Davidson, D. F., Hanson, R. K. 2003
• A shock tube study of the product branching ratio of the NH2+NO reaction at high temperatures JOURNAL OF PHYSICAL CHEMISTRY A Song, S. H., Hanson, R. K., Bowman, C. T., GOLDEN, D. M. 2002; 106 (40): 9233-9235

  View details for DOI 10.1021/jp020943d

  View details for Web of Science ID 000178506700012

• Quantitative NO-LIF imaging in high-pressure flames APPLIED PHYSICS B-LASERS AND OPTICS Bessler, W. G., Schulz, C., Lee, T., Shin, D. I., Hofmann, M., Jeffries, J. B., Wolfrum, J., Hanson, R. K. 2002; 75 (1): 97-102

  View details for DOI 10.1007/s00340-002-0946-0

  View details for Web of Science ID 000178921100017

• Characterization of expansion tube flows for hypervelocity combustion studies JOURNAL OF PROPULSION AND POWER Ben-Yakar, A., Hanson, R. K. 2002; 18 (4): 943-952

  View details for Web of Science ID 000176934100030

• A shock tube study of benzylamine decomposition: Overall rate coefficient and heat of formation of the benzyl radical JOURNAL OF PHYSICAL CHEMISTRY A Song, S., GOLDEN, D. M., Hanson, R. K., Bowman, C. T. 2002; 106 (25): 6094-6098

  View details for DOI 10.1021/jp0200851

  View details for Web of Science ID 000176356400017

• Strategies for laser-induced fluorescence detection of nitric oxide in high-pressure flames. I. A-X(0,0) excitation APPLIED OPTICS Bessler, W. G., Schulz, C., Lee, T., Jeffries, J. B., Hanson, R. K. 2002; 41 (18): 3547-3557

  Abstract

  Three different high-pressure flame measurement strategies for NO laser-induced fluorescence (LIF) with A-X(0,0) excitation have been studied previously with computational simulations and experiments in flames up to 15 bars. Interference from O2 LIF is a significant problem in lean flames for NO LIF measurements, and pressure broadening and quenching lead to increased interference with increased pressure. We investigate the NO LIF signal strength, interference by hot molecular oxygen, and temperature dependence of the three previous schemes and for two newly chosen excitation schemes with wavelength-resolved LIF measurements in premixed methane and air flames at pressures between 1 and 60 bars and a range of fuel/air ratios. In slightly lean flames with an equivalence ratio of 0.83 at 60 bars, the contribution of O2 LIF to the NO LIF signal varies between 8% and 29% for the previous schemes. The O2 interference is best suppressed with excitation at 226.03 nm.

  View details for Web of Science ID 000176274200009

  View details for PubMedID 12078680

• Wavelength-agile diode-laser sensing strategies for monitoring gas properties in optically harsh flows: application in cesium-seeded pulse detonation engine OPTICS EXPRESS Sanders, S. T., Mattison, D. W., Ma, L., Jeffries, J. B., Hanson, R. K. 2002; 10 (12): 505-514

  Abstract

  The rapid, broad wavelength scanning capabilities of advanced diode lasers allow extension of traditional diode-laser absorption techniques to high pressure, transient, and generally hostile environments. Here, we demonstrate this extension by applying a vertical cavity surface-emitting laser (VCSEL) to monitor gas temperature and pressure in a pulse detonation engine (PDE). Using aggressive injection current modulation, the VCSEL is scanned through a 10 cm-1 spectral window at megahertz rates - roughly 10 times the scanning range and 1000 times the scanning rate of a conventional diode laser. The VCSEL probes absorption lineshapes of the ~ 852 nm D2 transition of atomic Cs, seeded at ~ 5 ppm into the feedstock gases of a PDE. Using these lineshapes, detonated-gas temperature and pressure histories, spanning 2000 - 4000 K and 0.5 - 30 atm, respectively, are recorded with microsecond time response. The increasing availability of wavelength-agile diode lasers should support the development of similar sensors for other harsh flows, using other absorbers such as native H2O.

  View details for DOI 10.1364/OE.10.000505

  View details for Web of Science ID 000176231400003

  View details for PubMedID 19436388

• Ultra-fast-framing schlieren system for studies of the time evolution of jets in supersonic crossflows EXPERIMENTS IN FLUIDS Ben-Yakar, A., Hanson, R. K. 2002; 32 (6): 652-666

  View details for DOI 10.1007/s00348-002-0405-z

  View details for Web of Science ID 000180388300007

• Direct measurements of the reaction H+CH2O -> H-2+HCO behind shock waves by means of Vis-UV detection of formaldehyde INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Friedrichs, G., Davidson, D. F., Hanson, R. K. 2002; 34 (6): 374-386

  View details for Web of Science ID 000175876100006

• Ultraviolet absorption spectra of shock-heated carbon dioxide and water between 900 and 3050 K CHEMICAL PHYSICS LETTERS Schulz, C., Koch, J. D., Davidson, D. F., Jeffries, J. B., Hanson, R. K. 2002; 355 (1-2): 82-88

  View details for Web of Science ID 000174847500014

• High-sensitivity absorption diagnostic for NO2 using a blue diode laser JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Liu, J. T., Hanson, R. K., Jeffries, J. B. 2002; 72 (5): 655-664

  View details for Web of Science ID 000173480300008

• Study of the high-temperature autoignition of n-alkane/O-2/Ar mixtures JOURNAL OF PROPULSION AND POWER Horning, D. C., Davidson, D. F., Hanson, R. K. 2002; 18 (2): 363-371

  View details for Web of Science ID 000174487300019

• Linear excitation schemes for IR planar-induced fluorescence imaging of CO and CO2 APPLIED OPTICS Kirby, B. J., Hanson, R. K. 2002; 41 (6): 1190-1201

  Abstract

  A detailed discussion of linear excitation schemes for IR planar-induced fluorescence (PLIF) imaging of CO and CO2 is presented. These excitation schemes are designed to avoid laser scattering, absorption interferences, and background luminosity while an easily interpreted PLIF signal is generated. The output of a tunable optical parametric amplifier excites combination or overtone transitions in these species, and InSb IR cameras collect fluorescence from fundamental transitions. An analysis of the dynamics of pulsed laser excitation demonstrates that rotational energy transfer is prominent; hence the excitation remains in the linear regime, and standard PLIF postprocessing techniques may be used to correct for laser sheet inhomogeneities. Analysis of the vibrational energy-transfer processes for CO show that microsecond-scale integration times effectively freeze the vibrational populations, and the fluorescence quantum yield following nanosecond-pulse excitation can be made nearly independent of the collisional environment. Sensitivity calculations show that the single-shot imaging of nascent CO in flames is possible. Signal interpretation for CO2 is more complicated, owing to strongly temperature-dependent absorption cross sections and strongly collider-dependent fluorescence quantum yield. These complications limit linear CO2 IR PLIF imaging schemes to qualitative visualization but indicate that increased signal level and improved quantitative accuracy can be achieved through consideration of laser-saturated excitation schemes.

  View details for Web of Science ID 000173934400032

  View details for PubMedID 11900144

• Evolution and growth of large-scale structures in high compressibility mixing layers JOURNAL OF TURBULENCE Rossmann, T., Mungal, M. G., Hanson, R. K. 2002; 3

  View details for Web of Science ID 000174238400001

• Quantitative detection of HCO behind shock waves: The thermal decomposition of HCO PHYSICAL CHEMISTRY CHEMICAL PHYSICS Friedrichs, G., Herbon, J. T., Davidson, D. F., Hanson, R. K. 2002; 4 (23): 5778-5788

  View details for DOI 10.1039/b205692e

  View details for Web of Science ID 000179237500011

• Laser-induced fluorescence detection of no in high-pressure flames with A-X(0,0), (0,1), and (0,2) excitation 40th AIAA Aerospace Sciences Meeting & Exhibit Lee, T., Shin, D., Jeffries, J. B., Hanson, R. K., Bessler, W. G., Schulz, C. 2002

  View details for DOI 10.2514/6.2002-399

• Character of Mach Wave Radiation and Convection Velocity Estimation in Supersonic Shear Layers 8th AIAA/CEAS Aeroacoustics Conference & Exhibit Rossmann, T., Mungal, M. G., Hanson, R. K. 2002

  View details for DOI 10.2514/6.2002-2571

• Scanned wavelength diode-laser sensors for harsh environments Conference on Diode Lasers and Applications in Atmospheric Sensing Jeffries, J. B., Sanders, S. T., Zhou, X., Ma, L., Mattison, D. W., Hanson, R. K. SPIE-INT SOC OPTICAL ENGINEERING. 2002: 88–95

  View details for Web of Science ID 000178711700009

• Impact of UV absorption by CO2 and H2O on NO LIF in high-pressure combustion applications 29th International Combustion Symposium Schulz, C., Jeffries, J. B., Davidson, D. F., Koch, J. D., Wolfrum, J., Hanson, R. K. ELSEVIER SCIENCE INC. 2002: 2735–2742

  View details for Web of Science ID 000182866500160

• Monitoring and control of a pulse detonation engine using a diode-laser fuel concentration and temperature sensor 29th International Combustion Symposium Ma, L., Sanders, S. T., Jeffries, J. B., Hanson, R. K. ELSEVIER SCIENCE INC. 2002: 161–166

  View details for Web of Science ID 000182866100021

• Diode laser sensor to monitor HCl in a plasma etch reactor Conference on Diode Lasers and Applications in Atmospheric Sensing Kim, S., Klimecky, P., Chou, S. I., Jeffries, J. B., Terry, F. L., Hanson, R. K. SPIE-INT SOC OPTICAL ENGINEERING. 2002: 129–136

  View details for Web of Science ID 000178711700013

• Sensors for high-pressure, harsh combustion environments using wavelength-agile diode lasers 29th International Combustion Symposium Sanders, S. T., Mattison, D. W., Jeffries, J. B., Hanson, R. K. ELSEVIER SCIENCE INC. 2002: 2661–2667

  View details for Web of Science ID 000182866500151

• A shock tube study of the enthalpy of formation of OH 29th International Combustion Symposium Herbon, J. T., Hanson, R. K., GOLDEN, D. M., Bowman, C. T. ELSEVIER SCIENCE INC. 2002: 1201–1208

  View details for Web of Science ID 000182866100145

• A shock tube study of the NH2+NO2 reaction 29th International Combustion Symposium Song, S., GOLDEN, D. M., Hanson, R. K., Bowman, C. T. ELSEVIER SCIENCE INC. 2002: 2163–2170

  View details for Web of Science ID 000182866500090

• Combustion Temperature and H2O Concentration Sensor using a Single Diode Laser 40th AIAA Aerospace Sciences Meeting & Exhibit Zhou, X., Sanders, S. T., Jeffries, J. B., Hanson, R. K., Jenkins, T. P. 2002

  View details for DOI 10.2514/6.2002-395

• Laser-based Diagnostics and Scalar Imaging in High Compressibility Shear Layers 11th International Symposium on Applications of Laser Techniques to Fluid Mechanics Rossmann, T., Mungal, M. G., Hanson, R. K. 2002
• Diode-Laser Sensors for Pulse Detonation Engine Applications 40th AIAA Aerospace Sciences Meeting & Exhibit Mattison, D. W., Sanders, S. T., Hinckley, K. M., Brophy, C. M., Jeffries, J. B., Hanson, R. K. 2002

  View details for DOI 10.2514/6.2002-471

• Quantitative NO-LIF Imaging in High-Pressure Flames in Optical and Laser Diagnostics, (Inst. of Physics, Bristol, PA, 2003), presented at 1st Int. Conf. on Optical and Laser Diagnostics (ICOLAD) Bessler, W., G., Schulz, C., Lee, T., Shin, D., I., Hofmann, M., Jeffries, J., B., Hanson, R. K. City University, London. 2002: 107–114
• Quantitative Temperature Imaging using NO-LIF in Flames at Elevated Pressures (1-60 bar) 6th Int. Workshop on Measurement and Computation for Turbulent Non-premixed Flames Bessler, W. G., Schulz, C., Lee, T., Shin, D., Jeffries, J. B., Hanson, R. K. 2002
• 3-Pentanone Photophysics for PLIF Applications: Temperature Dependences and Limitations Spring meeting of WSS/CI Koch, J. D., Hanson, R. K. 2002
• Wavelength-Agile Diode Laser Sensors for Monitoring Gas Properties in Harsh Environments Laser Applications to Chemical and Environmental Analysis Sanders, S. T., Jeffries, J. B., Wang, J., Hanson, R. K. 2002

  View details for DOI 10.1364/LACEA.2002.SuB2

• Strategies for NO Laser-Induced Fluorescence in Methane-Air Flames at Pressures between 1 and 60 bar Laser Applications to Chemical and Environmental Analysis Bessler, W. G., Schulz, C., Shin, D., Lee, T., Jeffries, J. B., Hanson, R. K. 2002

  View details for DOI 10.1364/LACEA.2002.FB4

• Laser-based Fuel Diagnostics for Sensing and Control in Pulse Detonation Engines 40th AIAA Aerospace Sciences Meeting & Exhibit Ma, L., Sanders, S. T., Hanson, R. K. 2002

  View details for DOI 10.2514/6.2002-609

• Tunable Diode Laser Sensing and Combustion Control Applied Combustion Diagnostics Allen, M. G., Furlong, E. R., Hanson, R. K. edited by Kohse-Höinghaus, K., Jeffries, J. B. Taylor and Francis, NY. 2002: 479–798
• Characterization of Fuel Loading in Combustion Systems using Diode-Laser Sensors Spring meeting of WSS/CI Ma, L., Sanders, S. T., Jeffries, J. B., Romo, E. A., Hanson, R. K. 2002
• Laser Diagnostics for Combustion and Propulsion Distinguished Lecture Series Hanson, R. K. 2002
• Temperature-Dependent Absorption by CO2: Implications for UV Diagnostics in High-Temperature Flames Laser Applications to Chemical and Environmental Analysis Schulz, C., Gronki, J., Koch, J. D., Davidson, D. F., Jeffries, J. B., Hanson, R. K. 2002

  View details for DOI 10.1364/LACEA.2002.FC2

• Advanced Laser Diagnostics for Reactive Flows 40th AIAA Aerospace Sciences Meeting & Exhibit Hanson, R. K. 2002

  View details for DOI 10.2514/6.2002-196

• Shock tube measurements of iso-octane ignition times and OH concentration time histories 29th International Combustion Symposium Davidson, D. F., Oehlschlaeger, M. A., Herbon, J. T., Hanson, R. K. ELSEVIER SCIENCE INC. 2002: 1295–1301

  View details for Web of Science ID 000182866100155

• CO2 imaging with saturated planar laser-induced vibrational fluorescence APPLIED OPTICS Kirby, B. J., Hanson, R. K. 2001; 40 (33): 6136-6144

  Abstract

  We present new vibrational (infrared) planar laser-induced fluorescence (PLIF) imaging techniques for CO(2) that use a simple, inexpensive, high-pulse-energy transversely excited atmospheric CO(2) laser to saturate a CO(2) absorption transition at 10.6 mum. Strong excitation by use of a CO(2) laser provides increased signal levels at flame temperatures and simplifies image interpretation. Because rotational energy transfer and intramodal vibrational energy transfer are fast, vibrational distributions can be approximated by use of a simple three-temperature model. Imaging results from a 425 K unsteady transverse CO(2) jet and a laminar coflowing CO/H(2) diffusion flame with temperatures near 1500 K are presented. If needed, temperature-insensitive signal levels can be generated with a two-laser technique. These results illustrate the potential for saturated infrared PLIF in a variety of flows.

  View details for Web of Science ID 000172242900021

  View details for PubMedID 18364913

• Soot pyrometry using modulated absorption/emission COMBUSTION AND FLAME Jenkins, T. P., Hanson, R. K. 2001; 126 (3): 1669-1679

  View details for Web of Science ID 000171303300006

• Cavity flame-holders for ignition and flame stabilization in scramjets: An overview AIAA/ASME/SAE/ASEE 34th Joint Propulsion Conference and Exhibit Ben-Yakar, A., Hanson, R. K. AMER INST AERONAUT ASTRONAUT. 2001: 869–77

  View details for Web of Science ID 000169952700016

• HBr concentration and temperature measurements in a plasma etch reactor using diode laser absorption spectroscopy JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A Chou, S. I., Baer, D. S., Hanson, R. K., Collison, W. Z., Ni, T. Q. 2001; 19 (2): 477-484

  View details for Web of Science ID 000167591600015

• High Compressibility Mixing Layer Studies in a Shock Tunnel Driven Facility 23rd Int. Symp.on Shock Waves Rossmann, T., Mungal, M. G., Hanson, R. K. 2001
• Mixing Efficiency and Mean Temperature Measurements in a High Compressibility Mixing Layer 54th Annual Meeting of the Division of Fluid Dynamics Rossmann, T., Mungal, M. G., Hanson, R. K. 2001
• Multiplexed diode-laser absorption sensors for aeropropulsion flows 39th Aerospace Sciences Meeting and Exhibit Sanders, S. T., Mattison, D. W., Muruganandam, T. M., Hanson, R. K. 2001

  View details for DOI 10.2514/6.2001-412

• "Measurement Techniques and Diagnostics: 5.2 Spectroscopic Diagnostics" in Handbook of Shock Waves Davidson, D. F., Hanson, R. K. edited by Ben-Dor, G., Igra, O., Elperin, T. 2001

  View details for DOI 10.1016/B978-012086430-0/50018-X

• An improved turbulent boundary-layer model for shock tubes 15th AIAA Computational Fluid Dynamics Conference Petersen, E. L., Hanson, R. K. 2001

  View details for DOI 10.2514/6.2001-2855

• Simultaneous imaging of temperature and mole fraction using acetone planar laser-induced fluorescence EXPERIMENTS IN FLUIDS Thurber, M. C., Hanson, R. K. 2001; 30 (1): 93-101

  View details for Web of Science ID 000166416900013

• Nonideal effects behind reflected shock waves in a high-pressure shock tube SHOCK WAVES Petersen, E. L., Hanson, R. K. 2001; 10 (6): 405-420

  View details for Web of Science ID 000166514500002

• Ignition Time Correlations for n-Alkane/O2/Ar Mixtures 23rd Symp. (Int.) on Shock Waves Horning, D. C., Davidson, D. F., Hanson, R. K. 2001
• Infrared Overtone Spectroscopy Measurements of Ammonia and Carbon Dioxide in the Effluent of a Biological Water Processor 31st International Conference On Environmental Systems Claps, R., Leleux, D., Englich, F. V., Tittel, F. K., Webber, M. E., Jeffries, J. B., Hanson, R. K., Graf, J. C., Vega, L. M. 2001

  View details for DOI 10.4271/2001-01-2159

• Diode-laser absorption sensor for line-of-sight gas temperature distributions Applied Optics Sanders, S. T., Wang, J., Jeffries, J. B., Hanson, R. K. 2001; 40 (24): 4404-4415

  View details for DOI 10.1364/AO.40.004404

• Laser Induced Fluorescence Detection of Nitric Oxide in High-pressure Flames with A-X (0,1) Excitation Joint Meeting of Combustion Institute Bessler, W. G., Schulz, C., Lee, T., Jeffries, J. B., Hanson, R. K. 2001
• The Decomposition Products of JP-10 37th Joint Propulsion Conference and Exhibit Davidson, D. F., Horning, D. C., Oehlschlaeger, M. A., Hanson, R. K. 2001

  View details for DOI 10.2514/6.2001-3707

• Diode Laser Sensors for Detonation Flows 23rd Symp. (Int.) on Shock Waves Sanders, S. T., Thurichengode, M. M., Mattison, D. W., Hanson, R. K. 2001
• Advanced Laser Diagnostics for Reactive Flows invited plenary lecture, Int. Conf. on Dynamics of Explosions and Reactive Systems Hanson, R. K. 2001
• Measurements of NH3 and CO2 with Distributed-Feedback Diode Lasers Near 2.0 m in Bioreactor Vent Gases Applied Optics Webber, M. E., Claps, R., Englich, F. W., Tittel, F. K., Jeffries, J. B., Hanson, R. K. 2001; 40: 4395-4403

  View details for DOI 10.1364/AO.40.004395

• Ketone Photophysics for Quantitative PLIF Imaging 39th Aerospace Sciences Meeting and Exhibit Koch, J. D., Hanson, R. K. 2001

  View details for DOI 10.2514/6.2001-413

• Diode-Laser Sensors for Pulse Detonation Engines Joint Meeting of Combustion Institute Sanders, S. T., Mattison, D. W., Ma, L., Hanson, R. K. 2001
• Shock Tube Determination of the Overall Ratio of NH2 and NO Products in the Thermal DeNox Temperature Window Joint Meeting of Combustion Institute Song, S., Bowman, C. T., Hanson, R. K., Golden, D. M. 2001
• Shock Tube Study of the High-Temperature Thermal Decomposition of n-Alkanes 23rd Symp. (Int.) on Shock Waves Horning, D. C., Davidson, D. F., Hanson, R. K. 2001
• Measurements of Reflected Shock Bifurcation in a High-Pressure Shock Tube 23rd Int. Symp.on Shock Waves Petersen, E. L., Hanson, R. K. 2001
• Diode Lasers for Combustion Sensing and Control invited plenary lecture, Int. Conf. on Tunable Diode Laser Spectroscopy Hanson, R. K. 2001
• Rapid Temperature-Tuning of a 1.4 μm Diode Laser with Application to High Pressure H2O Absorption Spectroscopy Optics Letters Sanders, S. T., Mattison, D. W., Jeffries, J. B., Hanson, R. K. 2001; 26 (20): 1568-1570

  View details for DOI 10.1364/OL.26.001568

• In situ combustion measurements of CO2 by use of a distributed-feedback diode-laser sensor near 2.0 µm Applied Optics Webber, M. E., Kim, S., Sanders, S. T., Baer, D. S., Hanson, R. K., Ikeda, Y. 2001; 40 (6): 821-828

  View details for DOI 10.1364/AO.40.000821

• Oxygen Measurements at High Pressures using Vertical Cavity Surface-Emitting Lasers Applied Physics B Wang, J., Sanders, S. T., Jeffries, J. B., Hanson, R. K. 2001; 72 (7): 865-872

  View details for DOI 10.1007/s003400100539

• Ammonia monitoring near 1.5 µm with diode-laser absorption sensors Applied Optics Webber, M. E., Baer, D. S., Hanson, R. K. 2001; 40 (12): 2031-2042

  View details for DOI 10.1364/AO.40.002031

• Measurements of Collision-Shift in Absorption Transitions of the A-X (0,0) Band Using a Shock Tube 23rd Symp. (Int.) on Shock Waves Herbon, J. T., Hanson, R. K. 2001
• Shock Tube Determination of the Overall Rate of NH2 + NO => Products in the Thermal De-NOx Temperature Window International Journal of Chemical Kinetics Song, S., Hanson, R. K., Bowman, C. T., Golden, D. M. 2001; 33 (11): 715-721

  View details for DOI 10.1002/kin.1068

• OH concentration time histories in n-alkane oxidation International Journal of Chemical Kinetics Davidson, D. F., Herbon, J. T., Horning, D. C., Hanson, R. K. 2001; 33 (12): 775–783

  View details for DOI 10.1002/kin.10000

• Experimental Study and Modeling of the Reaction H + O2 + M => HO2+ M (M = Ar, N2, H2O) at Elevated Pressures and Temperatures between 1050 and 1200K Physical Chemistry Chemical Physics Bates, R. W., Golden, D. M., Hanson, R. K., Bowman, C. T. 2001; 3 (12): 2337-2342

  View details for DOI 10.1039/b010002l

• Acetone PLIF and Schlieren Imaging of High Compressibility Mixing Layers 39th Aerospace Sciences Meeting and Exhibit Rossmann, T., Mungal, M. G., Hanson, R. K. 2001

  View details for DOI 10.2514/6.2001-290

• Tunable Diode Laser Sensing for Combustion Monitoring and Control invited plenary lecture, Joint International Combustion Symposium Hanson, R. K. 2001
• A potential remote sensor of CO in vehicle exhausts using 2.3 mu m diode lasers MEASUREMENT SCIENCE & TECHNOLOGY Wang, J., Maiorov, M., Jeffries, J. B., Garbuzov, D. Z., Connolly, J. C., Hanson, R. K. 2000; 11 (11): 1576-1584

  View details for Web of Science ID 000165366000007

• Multiplexed continuous-wave diode-laser cavity ringdown measurements of multiple species APPLIED OPTICS Totschnig, G., Baer, D. S., Wang, J., Winter, F., Hofbauer, H., Hanson, R. K. 2000; 39 (12): 2009-2016

  Abstract

  Rapid cavity ringdown measurements of multiple broadband absorbing species (methanol and isopropanol) in gas mixtures have been recorded with two multiplexed continuous-wave distributed-feedback diode lasers operating near 1.4 mum. A measurement sensitivity of 2.4 x 10(-9) cm(-1) for a 4.3-s averaging time was achieved in a 39.5-cm-long static cell with 99.94% reflectivity mirrors. This corresponds to a water-vapor detection limit of less than 2 ppb (parts in 10(9)) for the strong H(2)O lines near 1.4 mum. The shot-to-shot noise of the decay time constant tau was approximately 0.3-0.7%, and ringdown acquisition rates as great as 900 Hz were achieved.

  View details for Web of Science ID 000086598500020

  View details for PubMedID 18345101

• High-resolution measurements of HBr transitions in the first overtone band using tunable diode lasers JOURNAL OF MOLECULAR SPECTROSCOPY Chou, S. I., Baer, D. S., Hanson, R. K. 2000; 200 (1): 138-142

  Abstract

  High-resolution absorption lineshapes of the R(7) and P(2) transitions in the first overtone (v = 0-2) band of H(79)Br have been recorded at room temperature using a pair of distributed feedback diode lasers operating near 1.95 and 2.00 µm, respectively. Spectral line intensities and self-broadening coefficients were determined by fitting the measured spectra (for various pressures P = 10-100 Torr) with Voigt profiles and compared with values in the literature. Measured line intensities for the P(2) and R(7) transitions are approximately 11 and 16% higher than those listed in the HITRAN database, respectively. The measured self-broadening coefficient of the P(2) transition is approximately 14% lower than the value listed in HITRAN. Measurements of the P(2) lineshapes at low pressure (100 mTorr) were modeled with eight-line Gaussian profiles based on ground state (v = 0) hyperfine constants to include the effects of nuclear electric quadrupole interactions. Copyright 2000 Academic Press.

  View details for Web of Science ID 000085653800015

• High-Resolution Measurements of HBr Transitions in the First Overtone Band Using Tunable Diode Lasers. Journal of molecular spectroscopy Chou, S. I., Baer, D. S., Hanson, R. K. 2000; 200 (1): 138-142

  Abstract

  High-resolution absorption lineshapes of the R(7) and P(2) transitions in the first overtone (v = 0-2) band of H(79)Br have been recorded at room temperature using a pair of distributed feedback diode lasers operating near 1.95 and 2.00 µm, respectively. Spectral line intensities and self-broadening coefficients were determined by fitting the measured spectra (for various pressures P = 10-100 Torr) with Voigt profiles and compared with values in the literature. Measured line intensities for the P(2) and R(7) transitions are approximately 11 and 16% higher than those listed in the HITRAN database, respectively. The measured self-broadening coefficient of the P(2) transition is approximately 14% lower than the value listed in HITRAN. Measurements of the P(2) lineshapes at low pressure (100 mTorr) were modeled with eight-line Gaussian profiles based on ground state (v = 0) hyperfine constants to include the effects of nuclear electric quadrupole interactions. Copyright 2000 Academic Press.

  View details for DOI 10.1006/jmsp.1999.8038

  View details for PubMedID 10662585

• Measurements of temperature-dependent argon-broadened half-widths of H2O transitions in the 7117 cm(-1) region JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Nagali, V., Davidson, D. F., Hanson, R. K. 2000; 64 (6): 651-655

  View details for Web of Science ID 000084961400009

• In situ combustion measurements of CO with diode-laser absorption near 2.3 µm Applied Optics Wang, J., Maiorov, M., Baer, D. S., Garbuzov, D. Z., Connolly, J. C., Hanson, R. K. 2000; 39 (30): 5579-5589

  View details for DOI 10.1364/AO.39.005579

• Soot diagnostic for pulse detonation engine studies 36th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Jenkins, T. P., Hanson, R. K. 2000

  View details for DOI 10.2514/6.2000-3588

• A soot temperature diagnostic combining flame emission and modulated laser absorption 38th Aerospace Sciences Meeting and Exhibit Jenkins, T. P., Hanson, R. K. 2000

  View details for DOI 10.2514/6.2000-953

• Diode laser sensor system for multi-parameter measurements in pulse detonation engine flows 36th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Sanders, S. T., Jenkins, T. P., Hanson, R. K. 2000

  View details for DOI 10.2514/6.2000-3593

• In situ combustion measurements of CO2 using diode laser sensors near 2.0 microns 38th Aerospace Sciences Meeting and Exhibit Webber, M. E., Kim, S., Baer, D. S., Hanson, R. K., Ikeda, Y. 2000

  View details for DOI 10.2514/6.2000-775

• in situ combustion measurements of CO using diode-laser absorption near 2.3 microns 38th Aerospace Sciences Meeting and Exhibit Wang, J., Maiorov, M., Baer, D. S., Garbuzov, D. Z., Connolly, J. C., Hanson, R. K. 2000

  View details for DOI 10.2514/6.2000-255

• Shock tube measurements of jp-10 ignition 28th International Symposium on Combustion Davidson, D. F., Horning, D. C., Herbon, J. T., Hanson, R. K. ELSEVIER SCIENCE INC. 2000: 1687–1692

  View details for Web of Science ID 000169870400027

• In situ combustion measurements of CO, CO2, H2O and temperature using diode laser absorption sensors 28th International Symposium on Combustion Webber, M. E., Wang, J., Sanders, S. T., Baer, D. S., Hanson, R. K. ELSEVIER SCIENCE INC. 2000: 407–413

  View details for Web of Science ID 000169795900052

• Imaging of CO and CO2 using infrared planar laser-induced fluorescence 28th International Symposium on Combustion Kirby, B. J., Hanson, R. K. ELSEVIER SCIENCE INC. 2000: 253–259

  View details for Web of Science ID 000169795900033

• Diode-laser sensor for monitoring multiple combustion parameters in pulse detonation engines 28th International Symposium on Combustion Sanders, S. T., Baldwin, J. A., Jenkins, T. P., Baer, D. S., Hanson, R. K. ELSEVIER SCIENCE INC. 2000: 587–594

  View details for Web of Science ID 000169795900073

• Shock tube determination of the overall rate of NH2+NO -> products at high temperatures 28th International Symposium on Combustion Song, S., Hanson, R. K., Bowman, C. T., GOLDEN, D. M. ELSEVIER SCIENCE INC. 2000: 2403–2409

  View details for Web of Science ID 000169870400112

• In Situ CO Exhaust Measurements using Diode Laser Absorption near 2.3 µm OSA Annual Meeting Jeffries, J. B., Hanson, R. K., Garbuzov, D. Z., Connolly, J. C. 2000
• In-Situ Combustion Diagnostics using Diode Laser Absorption Sensors Laser Applications to Chemical and Environmental Analysis Webber, M. E., Kim, S., Baer, D. S., Hanson, R. K. 2000

  View details for DOI 10.1364/LACEA.2000.SuA5

• Excitation Schemes for Infrared PLIF Imaging of Carbon Dioxide and Methane Frontiers in Optics / Laser Science Kirby, B. J., Hanson, R. K. 2000
• Measurements of CO, CO2 and H2O Combustion Emissions and Flame Temperature using Diode Laser Sensors ACS National Meeting, Envir. Chem. Symp. Webber, M. E., Sanders, S. T., Baer, D. S., Jeffries, J. B., Hanson, R. K., Maiorov, M., Garbuzov, D. Z., Connolly, J. C. 2000
• Numerical Simulations and Planar Laser-Induced Fluorescence Imaging Results of Hypersonic Reactive Flows Journal of Propulsion and Power Toshimitsu, K., Matsuo, A., Kamel, M. R., Morris, C. I., Hanson, R. K. 2000; 16: 16-21

  View details for DOI 10.2514/2.5558

• Recent Advances in Laser-Based Diagnostics for Gaseous Flows Journal of Visualization Hanson, R. K., Baer, D. S., Morris, C. I., Thurber, M. C., Furlong, E., Wehe, S. D. 2000: 309–319

  View details for DOI 10.1007/BF03181447

• Diode-Laser Absorption Sensor for Measurements in Pulse Detonation Engines 38th Aerospace Sciences Meeting and Exhibit Sanders, S. T., Jenkins, T. P., Baldwin, J. A., Baer, D. S., Hanson, R. K. 2000

  View details for DOI 10.2514/6.2000-358

• Tunable Diode Laser Sensors for Industrial Combustion Monitoring American Flame Research Committee (AFRC) Int. Symp. DeBarber, P., McKenzie, R. L., Hanson, R. K., Jeffries, J. B., Webber, M. E. 2000
• Vibrational Overtone Spectroscopy of NH3 for Industrial Sensors using DFB Diode Lasers OSA Annual Meeting Webber, M. E., Jeffries, J. B., Hanson, R. K. 2000
• Diode Laser-Based Measurements for Model Validation in Pulse Detonation Flows JANNAF Joint Meeting Jenkins, T. P., Sanders, S. T., Kailasaneth, K., Li, C., Hanson, R. K. 2000
• Shock Tubes and Lasers: New Opportunities for High Temperature Kinetics Studies Invited Plenary Lecture, 16th Inter. Symp. on Gas Kinetics Bowman, C. T., Hanson, R. K. 2000
• In Situ Measurements of CO, CO2, H2O Combustion Emissions with Diode Laser Sensors E.P.A./ Air and Waste Management Association Symp. Wang, J., Webber, M. E., Sanders, S. T., Baer, D. S., Jeffries, J. B., Hanson, R. K. 2000
• Dual-Camera Infrared PLIF Imaging of CO and CO2 38th Aerospace Sciences Meeting and Exhibit Kirby, B. J., Hanson, R. K. 2000

  View details for DOI 10.2514/6.2000-640

• An Experimental Investigation of High Compressibility Non-reacting Mixing Layers 38th Aerospace Sciences Meeting and Exhibit Rossmann, T., Mungal, M. G., Hanson, R. K. 2000

  View details for DOI 10.2514/6.2000-663

• Shock-tube study of high-pressure H2O spectroscopy APPLIED OPTICS Nagali, V., Herbon, J. T., Horning, D. C., Davidson, D. F., Hanson, R. K. 1999; 38 (33): 6942-6950

  Abstract

  Water-vapor absorption features near 7117, 7185, and 7462 cm(-1) were probed at pressures to 65 atm (1 atm = 760 Torr) and temperatures to 1800 K in shock-heated mixtures of H(2)O in N(2) and Ar with a diode-laser source. Calculated absorbances based on Voigt line shapes and measured line parameters were in good agreement, within 10%, with measured absorbances at 7185.4 and 7117.4 cm(-1). We obtained temperature-dependent N(2) and Ar shift parameters for H(2)O absorption features by shifting the calculated spectra to match the recorded absorption scan. Absorbance simulations based on line parameters from HITRAN and HITEMP were found to be similar over the range of temperatures 600-1800 K and were within 25% of the measurements. The combined use of Toth's [Appl. Opt. 36, 4851 (1994)] line positions and strengths and HITRAN broadening parameters resulted in calculated absorption coefficients that were within 15% of the measurements at all three probed wavelengths.

  View details for Web of Science ID 000083743900019

  View details for PubMedID 18324237

• Planar laser-induced fluorescence imaging of carbon monoxide using vibrational (infrared) transitions APPLIED PHYSICS B-LASERS AND OPTICS Kirby, B. J., Hanson, R. K. 1999; 69 (5-6): 505-507

  View details for Web of Science ID 000083978800027

• Pressure and composition dependences of acetone laser-induced fluorescence with excitation at 248, 266, and 308 nm APPLIED PHYSICS B-LASERS AND OPTICS Thurber, M. C., Hanson, R. K. 1999; 69 (3): 229-240

  View details for Web of Science ID 000082304100007

• Diode-laser sensor for velocity measurements in hypervelocity flows AIAA JOURNAL Wehe, S. D., Baer, D. S., Hanson, R. K. 1999; 37 (8): 1013-1015

  View details for Web of Science ID 000081901700019

• Diode-laser measurements of He-, Ar-, and N-2-broadened HF lineshapes in the first overtone band JOURNAL OF MOLECULAR SPECTROSCOPY Chou, S. I., Baer, D. S., Hanson, R. K. 1999; 196 (1): 70-76

  Abstract

  High-resolution lineshapes of the HF P(3) and P(6) transitions (2-0 band) have been recorded in a 14.9-cm long absorption cell (T = 296 K) using a pair of (InGaAsP)-distributed feedback diode lasers operating near 1.31 and 1.34 µm, respectively. The absorption lineshapes were least-squares fit to Voigt, Rautian, and Galatry profiles to determine the collision widths and velocity-changing collision frequencies for the perturbers He, Ar, and N2. Motional narrowing was observed for the He-broadened lineshapes over a range of total pressures from 50 to 646 Torr. The Ar- and N2-broadened spectra showed a strong narrowing effect for pressures less than 400 Torr. At higher pressures, narrowing parameters could not be reliably determined due to the relatively large Ar- and N2-pressure broadening. The collision widths inferred from Voigt-profile fits were systematically less than those determined from Rautian and Galatry fits (up to 25% for the He-broadened P(6) transition). The measured pressure-induced broadening and shift coefficients were compared with other experimental data and full-quantal close-coupling (CC) scattering cross-section calculations. The measured Ar-broadening half-widths were in excellent agreement with calculated values, while the measured shifts were 10 and 20% less than calculated values for the P(3) and P(6) transitions, respectively. The measured N2-broadening and shift coefficients agree reasonably well with values determined from previous experiments. Copyright 1999 Academic Press.

  View details for Web of Science ID 000081004300007

• Diode-Laser Measurements of He-, Ar-, and N2-Broadened HF Lineshapes in the First Overtone Band. Journal of molecular spectroscopy Chou, S. I., Baer, D. S., Hanson, R. K. 1999; 196 (1): 70-76

  Abstract

  High-resolution lineshapes of the HF P(3) and P(6) transitions (2-0 band) have been recorded in a 14.9-cm long absorption cell (T = 296 K) using a pair of (InGaAsP)-distributed feedback diode lasers operating near 1.31 and 1.34 µm, respectively. The absorption lineshapes were least-squares fit to Voigt, Rautian, and Galatry profiles to determine the collision widths and velocity-changing collision frequencies for the perturbers He, Ar, and N2. Motional narrowing was observed for the He-broadened lineshapes over a range of total pressures from 50 to 646 Torr. The Ar- and N2-broadened spectra showed a strong narrowing effect for pressures less than 400 Torr. At higher pressures, narrowing parameters could not be reliably determined due to the relatively large Ar- and N2-pressure broadening. The collision widths inferred from Voigt-profile fits were systematically less than those determined from Rautian and Galatry fits (up to 25% for the He-broadened P(6) transition). The measured pressure-induced broadening and shift coefficients were compared with other experimental data and full-quantal close-coupling (CC) scattering cross-section calculations. The measured Ar-broadening half-widths were in excellent agreement with calculated values, while the measured shifts were 10 and 20% less than calculated values for the P(3) and P(6) transitions, respectively. The measured N2-broadening and shift coefficients agree reasonably well with values determined from previous experiments. Copyright 1999 Academic Press.

  View details for DOI 10.1006/jmsp.1999.7847

  View details for PubMedID 10361058

• Diode-laser absorption measurements of hydrazine and monomethylhydrazine JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Webber, M. E., Mihalcea, R. M., Baer, D. S., Hanson, R. K., Segall, J., DeBarber, P. A. 1999; 62 (4): 511-522

  View details for Web of Science ID 000079839000010

• Reduced kinetics mechanisms for ram accelerator combustion AIAA/ASME/SAE/ASEE 33rd Joint Propulsion Conference and Exhibit Petersen, E. L., Hanson, R. K. AMER INST AERONAUT ASTRONAUT. 1999: 591–600

  View details for Web of Science ID 000081511500014

• Sensitive detection of NH2 in shock tube experiments using frequency modulation spectroscopy INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Votsmeier, M., Song, S., Davidson, D. F., Hanson, R. K. 1999; 31 (6): 445-453

  View details for Web of Science ID 000080484800006

• Diode-laser sensors for real-time control of pulsed combustion systems AIAA/ASME/SAE/ASEE 34th Joint Propulsion Conference and Exhibit Furlong, E. R., Mihalcea, R. M., Webber, M. E., Baer, D. S., Hanson, R. K. AMER INST AERONAUT ASTRONAUT. 1999: 732–37

  View details for Web of Science ID 000080578400011

• Spectral intensity and lineshape measurements in the first overtone band of HF using tunable diode lasers JOURNAL OF MOLECULAR SPECTROSCOPY Chou, S. I., Baer, D. S., Hanson, R. K. 1999; 195 (1): 123-131

  Abstract

  High-resolution absorption lineshapes for the P(3) and P(6) transitions of the first overtone (v = 2-0) band of HF at 296 K have been measured using a pair of distributed feedback diode lasers operating near 1.31 and 1.34 µm, respectively. Spectral line intensities and self-broadening parameters were determined by fitting the measured spectra with Voigt, Galatry, and Rautian lineshape models. Voigt profiles fit the low-pressure (<10 Torr) spectra of the P(3) transition reasonably well due to the relatively strong collisional broadening effect. Lineshape measurements of the P(6) transition (for pressures ranging from 5 to 60 Torr) show significant variation from the Voigt lineshape model due to velocity-changing collisions that effectively reduce the Doppler component of the spectral line. Lineshape models that include motional (Dicke) narrowing effects, Galatry (soft collision) and Rautian (hard collision) profiles yield significant improvements in the spectral lineshape fits compared with Voigt profiles. The collisional broadening coefficient (gamma) of the P(6) transition obtained from a Voigt fit is approximately 4% lower than those found with either Galatry or Rautian profile fits. The measured intensities and self-broadening coefficients are compared with values in the HITRAN database and previous measurements. Copyright 1999 Academic Press.

  View details for Web of Science ID 000079924700009

• Spectral Intensity and Lineshape Measurements in the First Overtone Band of HF Using Tunable Diode Lasers. Journal of molecular spectroscopy Chou, S. I., Baer, D. S., Hanson, R. K. 1999; 195 (1): 123-131

  Abstract

  High-resolution absorption lineshapes for the P(3) and P(6) transitions of the first overtone (v = 2-0) band of HF at 296 K have been measured using a pair of distributed feedback diode lasers operating near 1.31 and 1.34 µm, respectively. Spectral line intensities and self-broadening parameters were determined by fitting the measured spectra with Voigt, Galatry, and Rautian lineshape models. Voigt profiles fit the low-pressure (<10 Torr) spectra of the P(3) transition reasonably well due to the relatively strong collisional broadening effect. Lineshape measurements of the P(6) transition (for pressures ranging from 5 to 60 Torr) show significant variation from the Voigt lineshape model due to velocity-changing collisions that effectively reduce the Doppler component of the spectral line. Lineshape models that include motional (Dicke) narrowing effects, Galatry (soft collision) and Rautian (hard collision) profiles yield significant improvements in the spectral lineshape fits compared with Voigt profiles. The collisional broadening coefficient (gamma) of the P(6) transition obtained from a Voigt fit is approximately 4% lower than those found with either Galatry or Rautian profile fits. The measured intensities and self-broadening coefficients are compared with values in the HITRAN database and previous measurements. Copyright 1999 Academic Press.

  View details for DOI 10.1006/jmsp.1999.7805

  View details for PubMedID 10191156

• Shock tube study of monomethylamine thermal decomposition and NH2 high temperature absorption coefficient INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Votsmeier, M., Song, S., Davidson, D. F., Hanson, R. K. 1999; 31 (5): 323-330

  View details for Web of Science ID 000080104200001

• A shock tube study of the product branching ratio for the reaction NH2+NO using frequency-modulation detection of NH2 JOURNAL OF PHYSICAL CHEMISTRY A Votsmeier, M., Song, S., Hanson, R. K., Bowman, C. T. 1999; 103 (11): 1566-1571

  View details for Web of Science ID 000079458500017

• Shock Tube Study of the H + O2 + M -> HO2 + M (M = Ar, N2, H2O) Reaction at Elevated Pressures for Temperatures between 1050-1200K Joint Meeting of U.S. Combustion Institute Sections Bates, R. W., Hanson, R. K., Bowman, C. T., Golden, D. M. 1999
• Hypervelocity combustion studies using simultaneous OH-PLIF and Schlieren imaging in an expansion tube 35th Joint Propulsion Conference and Exhibit Ben-Yakar, A., Hanson, R. K. 1999

  View details for DOI 10.2514/6.1999-2453

• Supersonic combustion of cross-flow jets and the influence of cavity flame-holders 37th Aerospace Sciences Meeting and Exhibit Ben-Yakar, A., Hanson, R. K., 1999

  View details for DOI 10.2514/6.1999-484

• A new shock tunnel facility for high compressibility mixing layer studies 37th Aerospace Sciences Meeting and Exhibit Rossmann, T., Mungal, M. G., Hanson, R. K. 1999

  View details for DOI 10.2514/6.1999-415

• Infrared PLIF imaging of CO and CO2 37th Aerospace Sciences Meeting and Exhibit Kirby, B. J., Hanson, R. K. 1999

  View details for DOI 10.2514/6.1999-775

• Advanced diode-laser absorption sensors for combusion monitoring and control Advanced Sensors and Monitors for Process Industries and the Environment Baer, D. S., Furlong, E. R., Mihalcea, R. M., Webber, M. E., Hanson, R. K. 1999

  View details for DOI 10.1117/12.337462

• New room temperature CWInGaAsSb/AlGaAsSb QW ridge diode lasers and their application to CO measurements near 2.3 mu m SPIE Conference on Air Monitoring and Detection of Chemical and Biological Agents II Maiorov, M., Wang, J., Baer, D., LEE, H., Belenky, G., Hanson, R., Connolly, J., Garbuzov, D. SPIE-INT SOCIETY OPTICAL ENGINEERING. 1999: 62–70

  View details for Web of Science ID 000084810600007

• Advanced diode-laser absorption sensors for combustion monitoring and control Conference on Advanced Sensors and Monitors for Process Industries and the Environment Baer, D. S., Furlong, E. R., Mihalcea, R. M., Webber, M. E., Hanson, R. K. SPIE - INT SOC OPTICAL ENGINEERING. 1999: 16–23

  View details for Web of Science ID 000078906900002

• Gas Temperature and Velocity Measurements in Hypervelocity Flows Using Diode-Laser Absorption Sensors 22nd Int’l. Shock Tube and Shock Wave Symp. Wehe, S. D., Baer, D. S., Hanson, R. K., Chadwick, K. M. 1999
• Ignition Delay Times of Ram Accelerator CH/O/Diluent Mixtures Journal of Propulsion and Power Petersen, E. L., Davidson, D. F., Hanson, R. K. 1999; 15: 82-91

  View details for DOI 10.2514/2.5394

• Shock Tube Ignition Time Measurements for n-heptane/O2/Ar and JP-10/O2/Ar Mixtures 35th Joint Propulsion Conference and Exhibit Davidson, D. F., Horning, D. C., Hanson, R. K. 1999

  View details for DOI 10.2514/6.1999-2216

• Shock Tube Ignition Time Measurements for n-Heptane/Oxygen/Argon Mixtures with and without Additives Joint Meeting of U.S. Combustion Institute Sections Davidson, D. F., Hitch, B., Horning, D. C., Hanson, R. K. 1999
• Fundamental Investigations of Pulsed Detonation Phenomena JANNAF 36th CS/APS/PSHS Joint Meeting Williams, F. A., Hanson, R. K., Segal, C. 1999
• Diode-Laser Based Diagnostic to Monitor Water-Vapor in High-Pressure Environments 37th Aerospace Sciences Meeting and Exhibit Nagali, V., Herbon, J., Horning, D., Bates, R., Davidson, D. F., Hanson, R. K., 1999

  View details for DOI 10.2514/6.1999-942

• Shock Tube Ignition Time Measurements for n-heptane/O2/Ar with and without Additives 22nd Int’l. Shock Tube and Shock Wave Symp. Davidson, D. F., Horning, D. C., Hanson, R. K., Hitch, B. 1999
• Shock Tube Study of the Reaction NH2 + NO -> Products using Frequency Modulation Detection of NH2: Product Branching Ratio and Overall Rate Coefficient Joint Meeting of U.S. Combustion Institute Sections Song, S., Votsmeier, M., Hanson, R. K., Bowman, C. T., Golden, D. M., 1999
• Shock tube measurements of the equation of state of argon 13th Symposium on Thermophysical Properties Davidson, D. F., Bates, R., Petersen, E. L., Hanson, R. K. SPRINGER/PLENUM PUBLISHERS. 1998: 1585–94

  View details for Web of Science ID 000078147800009

• Diode-laser absorption measurements of CO2, H2O, N2O, and NH3 near 2.0 mu m APPLIED PHYSICS B-LASERS AND OPTICS Mihalcea, R. M., Webber, M. E., Baer, D. S., Hanson, R. K., Feller, G. S., Chapman, W. B. 1998; 67 (3): 283-288

  View details for Web of Science ID 000075859600004

• CH-radical concentration measurements in fuel-rich CH4/O-2/Ar and CH4/O-2/NO/Ar mixtures behind shock waves COMBUSTION AND FLAME Woiki, D., Votsmeier, M., Davidson, D. F., Hanson, R. K., Bowman, C. T. 1998; 113 (4): 624-626

  View details for Web of Science ID 000073079800016

• A diode-laser absorption sensor system for combustion emission measurements MEASUREMENT SCIENCE & TECHNOLOGY Mihalcea, R. M., Baer, D. S., Hanson, R. K. 1998; 9 (3): 327-338

  View details for Web of Science ID 000072540300004

• Application of method of characteristics to underexpanded, freejet flows with vibrational nonequilibrium AIAA JOURNAL Palmer, J. L., Hanson, R. K. 1998; 36 (2): 193-200

  View details for Web of Science ID 000071697800010

• Measurement of the Third-Body Efficiency of Water for the H + O2 + M -> HO2 + M Reaction at 35 atm and 1200 K poster at 27th Symp. (Int.) on Combustion Bates, R. W., Hanson, R. K., Bowman, C. T., Golden, D. M. 1998
• Measurements of gas temperature and velocity in hypervelocity flows using diode-laser sensors 20th AIAA Advanced Measurement and Ground Testing Technology Conference Wehe, S. D., Baer, D. S., Hanson, R. K. 1998

  View details for DOI 10.2514/6.1998-2699

• Optimized Kinetics Mechanism and Calculator for Natural Gas Combustion GRI-Mech 3.0 American Flame Research Committee Smith, G. P., Golden, D. M., Frenklach, M., Goldenberg, M., Moriarity, N., Bowman, C. T., Hanson, R. K., Gardiner, W. C., Lissianski, V., Seruskas, R. V. 1998
• Cavity flameholders for ignition and flame stabilization in scramjets - Review and experimental study 34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Ben-Yakar, A., Hanson, R. K. 1998

  View details for DOI 10.2514/6.1998-3122

• Advanced diode laser absorption sensor for in-situ combustion measurements of CO2, H2O, and gas temperature 36th AIAA Aerospace Sciences Meeting and Exhibit Mihalcea, R. M., Baer, D. S., Hanson, R. K., 1998

  View details for DOI 10.2514/6.1998-237

• Combustion emissions measurements using diode-laser sensors 34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Mihalcea, R. M., Webber, M. E., Baer, D. S., Hanson, R. K. 1998

  View details for DOI 10.2514/6.1998-3948

• Diode laser sensors for real-time control of pulsed combustion systems 34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Furlong, E. R., Mihalcea, R. M., Webber, M. E., Baer, D. S., Hanson, R. K. 1998

  View details for DOI 10.2514/6.1998-3949

• Real-time adaptive combustion control using diode-laser absorption sensors 27th International Symposium on Combustion Furlong, E. R., Baer, D. S., Hanson, R. K. COMBUSTION INSTITUTE. 1998: 103–111

  View details for Web of Science ID 000083308600009

• Shock-induced combustion in high-speed wedge flows 27th International Symposium on Combustion Morris, C. I., Kamel, M. R., Hanson, R. K. COMBUSTION INSTITUTE. 1998: 2157–2164

  View details for Web of Science ID 000083308600250

• Advanced diode laser absorption sensor for in situ combustion measurements of CO2, H2O, and gas temperature 27th International Symposium on Combustion Mihalcea, R. M., Baer, D. S., Hanson, R. K. COMBUSTION INSTITUTE. 1998: 95–101

  View details for Web of Science ID 000083308600008

• Continuously Tunable, Single Mode, External Cavity Diode Lasers at 2 μm Laser Applications to Chemical, Security and Environmental Analysis Feller, G. S., Wu, I. F., Menna, R. J., Martinelli, R. U., Connolly, J. C., Mihalcea, R. M., Baer, D. S., Hanson, R. K. 1998
• Diode Laser Sensors for Combustion Measurements and Control Advances in Chemical Propulsion Baer, D. S., Hanson, R. K. edited by Roy, G. D. 1998
• Measurements and modeling of acetone laser-induced fluorescence with implications for temperature-imaging diagnostics Applied Optics Thurber, M. C., Grisch, F., Kirby, B. J., Votsmeier, M., Hanson, R. K. 1998; 37 (21): 4963-4978

  View details for DOI 10.1364/AO.37.004963

• Advanced Diode-Laser Sensors for Closed-Loop Control of a Forced-Vortex Combustor Frontiers in Optics / Laser Science Furlong, E. R., Mihalcea, R. M., Webber, M. E., Baer, D. S., Hanson, R. K. 1998
• Measurements of Gas Temperature and Velocity in High Enthalpy Flows using a Diode Laser Absorption Sensor Frontiers in Optics / Laser Science Wehe, S. D., Baer, D. S., Hanson, R. K. 1998
• Investigation of Shock-Induced Combustion in Hypersonic Wedge Flows WSS/CI Morris, C. I., Kamel, M. R., Hanson, R. K. 1998
• Infrared PLIF Imaging of Gaseous Flows 36th AIAA Aerospace Sciences Meeting and Exhibit Kirby, B. J., Hanson, R. K. 1998

  View details for DOI 10.2514/6.1998-307

• Diode-Laser Absorption Measurements of CO2, H2O and N2O near 2 μm Laser Applications to Chemical, Security and Environmental Analysis Mihalcea, R. M., Baer, D. S., Hanson, R. K., Feller, G. S. 1998
• Diode Laser Sensor for Combustion Emissions Monitoring SPIE/VSJ Mihalcea, R. M., Webber, M. E., Baer, D. S., Hanson, R. K. 1998
• Hypersonic Combustion and Mixing Studies Using Simultaneous OH-PLIF and Schlieren Imaging 36th AIAA Aerospace Sciences Meeting and Exhibit Ben-Yakar, A., Kamel, M., Morris, C. I., Hanson, R. K. 1998

  View details for DOI 10.2514/6.1998-940

• Simultaneous PIV and PLIF Measurements in Nonpremixed Transverse Jet Flames 9th Int. Symp. on Applications of Laser Techniques to Fluid Mechanics Hasselbrink, E. F., Mungal, M. G., Hanson, R. K. 1998
• Combined Schlieren and OH PLIF Imaging Study of Ram Accelerator Flowfields 36th AIAA Aerospace Sciences Meeting and Exhibit Morris, C. I., Kamel, M. R., Ben-Yakar, A., Hanson, R. K. 1998

  View details for DOI 10.2514/6.1998-244

• Experimental Investigation of Hydrogen-Air Autoignition and Flame Stabilization in Hypervelocity Flows WSS/CI Ben-Yakar, A., Kamel, M., Morris, C. I., Hanson, R. K. 1998
• Experimental Investigation of Ram-Accelerator Flow Fields and Combustion Kinetics Ram Accelerators Kamel, M. R., Morris, C. I., Petersen, E. L., Hanson, R. K. Springer Press. 1998: 281–294

  View details for DOI 10.1007/978-3-642-46876-6_28

• Diode-laser absorption measurements of CO2 near 2.0 μm at elevated temperatures Applied Optics Mihalcea, R. M., Baer, D. S., Hanson, R. K. 1998; 37 (36): 8341-8347

  View details for DOI 10.1364/AO.37.008341

• Diode-Laser Sensing System for Combustion Monitoring Laser Applications to Chemical Analysis Mihalcea, R. M., Baer, D. S., Hanson, R. K. 1998
• Experimental investigation of flame-holding capability of hydrogen transverse jet in supersonic cross-flow 27th International Symposium on Combustion Ben-Yakar, A., Hanson, R. K. COMBUSTION INSTITUTE. 1998: 2173–2180

  View details for Web of Science ID 000083308600252

• Instantaneous Imaging of Temperature and Mixture Fraction with Dual-Wavelength Acetone PLIF 36th AIAA Aerospace Sciences Meeting and Exhibit Thurber, M. C., Kirby, B. J., Hanson, R. K. 1998

  View details for DOI 10.2514/6.1998-397

• Combustion Diagnostics in Propulsion Combustion: Fuels to Emissions, Chap. 9 Parr, T. P., Hanson, R. K. edited by Roy, G. D. Taylor and Francis, Washington, DC. 1998: 281–320
• Simultaneous Planar Velocity Measurements and OH Imaging in a Transverse Jet Flame Journal of Visualization Hasselbrink, E. F., Mungal, M. G., Hanson, R. K. 1998; 1 (1): 65-77

  View details for DOI 10.1007/BF03182475

• Comparison of Numerical Simulations and PLIF Imaging Results of Hypersonic Inert and Reactive Flows around Blunt Projectiles Ram Accelerators Toshimitsu, K., Matsuo, A., Kamel, M. R., Morris, C. I., Hanson, R. K., Springer Press. 1998: 235–242

  View details for DOI 10.1007/978-3-642-46876-6_23

• Diode Laser Absorption Measurements of Hydrazine and Monomethylhydrazine 36th Aerospace Sciences Meeting Webber, M. E., Mihalcea, R. M., Baer, D. S., Hanson, R. K., Segall, J., DeBarber, P. 1998

  View details for DOI 10.2514/6.1998-400

• Design of a diode-laser sensor to monitor water vapor in high-pressure combustion gases APPLIED OPTICS Nagali, V., Hanson, R. K. 1997; 36 (36): 9518-9527

  Abstract

  The design of a diode-laser sensor to monitor water vapor in high-pressure combustion gases is described. The sensor, which employs a multiple-fixed-wavelength absorption strategy, has the potential to simultaneously monitor the water mole fraction and the temperature and pressure in high-pressure and high-temperature environments. The conventional scanned-wavelength strategy, employed in previous diode-laser sensors, is shown to be ill-suited for high-pressure applications. The application of impact and additive approximations in the modeling of H(2)O absorption features at high pressures is validated experimentally for number densities as high as 18 amagats. Criteria to select optimum wavelength combinations for the fixed-wavelengths strategy are discussed. Optimum wavelength combinations that meet these criteria are identified for different temperature and pressure ranges of interest to combustion applications. The proposed sensor configuration and a strategy to obtain the baseline (zero absorption intensity) in high-pressure environments are also described. Line-shape models that are appropriate for different temperature and pressure regimes are identified.

  View details for Web of Science ID A1997YL30200024

  View details for PubMedID 18264514

• Diode laser sensor for measurements of CO, CO2, and CH4 in combustion flows APPLIED OPTICS Mihalcea, R. M., Baer, D. S., Hanson, R. K. 1997; 36 (33): 8745-8752

  Abstract

  A diode laser sensor has been applied to monitor CO, CO(2), and CH(4) in combustion gases with absorption spectroscopy and fast extraction-sampling techniques. Survey spectra of the CO 3nu band (R branch) and the 2nu(1) + 2nu(2)(0) + nu(3) CO(2) band (R branch) near 6350 cm(-1) and H(2)O lines from the nu(1) + 2nu(2) and 2nu(2) + nu(3) bands in the spectral region from 6345 to 6660 cm(-1) were recorded and compared with calculated spectra (from the HITRAN 96 database) to select optimum transitions for species detection. Species concentrations above a laminar, premixed, methane-air flame were determined from measured absorption in a fast-flow multipass absorption cell containing probe-sampled combustion gases; good agreement was found with calculated chemical equilibrium values.

  View details for Web of Science ID A1997YF88600029

  View details for PubMedID 18264424

• Laser-induced fluorescence study of a xenon Hall thruster APPLIED PHYSICS B-LASERS AND OPTICS Cedolin, R. J., Hargus, W. A., Storm, P. V., Hanson, R. K., Cappelli, M. A. 1997; 65 (4-5): 459-469

  View details for Web of Science ID A1997YA61300005

• Temperature imaging with single- and dual-wavelength acetone planar laser-induced fluorescence OPTICS LETTERS Thurber, M. C., Grisch, F., Hanson, R. K. 1997; 22 (4): 251-253

  Abstract

  Two sensitive techniques for temperature imaging by use of acetone planar laser-induced fluorescence, applicable at temperatures up to 1000 K, are introduced and demonstrated. Photophysics data on the wavelength-dependent temperature variation of acetone fluorescence permit the implementation of a single-wavelength technique in environments with constant pressure and constant acetone mole fraction, and a dual-wavelength method can be applied in flows with mixing and (or) chemical reaction. Preliminary imaging results are presented for acetone-air flow over a heated cylinder (single-wavelength strategy) and for a heated laminar jet (dual-wavelength strategy).

  View details for Web of Science ID A1997WH24600019

  View details for PubMedID 18183166

• Laser Absorption and Infrared Emission Measurements in a High-Pressure Shock Tube 35th Aerospace Sciences Meeting and Exhibit Petersen, E. L., Bates, R., Davidson, D. F., Hanson, R. K. 1997

  View details for DOI 10.2514/6.1997-316

• Tunable diode-laser absorption measurements of temperature, velocity, and H2O in hypervelocity flows 33rd Joint Propulsion Conference and Exhibit Wehe, S. D., Baer, D. S., Hanson, R. K. 1997

  View details for DOI 10.2514/6.1997-3267

• Combustion sensing and control using wavelength-multiplexed diode lasers 35th Aerospace Sciences Meeting and Exhibit Furlong, E. R., Mihalcea, R. M., Webber, M. E., Baer, D. S., Hanson, R. K. 1997

  View details for DOI 10.2514/6.1997-320

• Planar velocity measurements and OH imaging in a transverse jet flame 35th Aerospace Sciences Meeting and Exhibit Hasslebrink, E. F., Mungal, M. G., Hanson, R. K., 1997

  View details for DOI 10.2514/6.1997-118

• Diode-laser absorption sensor system for combustion monitoring and control applications 33rd Joint Propulsion Conference and Exhibit Mihalcea, R. M., Baer, D. S., Hanson, R. K. 1997

  View details for DOI 10.2514/6.1997-3356

• Laser-induced fluorescence study of a xenon Hall thruster 33rd Joint Propulsion Conference and Exhibit Cedolin, R. J., Hargus, Jr, W. A., Storm, P. V., Hanson, R. K., Cappelli, M. A. 1997

  View details for DOI 10.2514/6.1997-3053

• Diode-laser sensor system for closed-loop control of a 50-kW incinerator Conference on Optical Technology in Fluid, Thermal, and Combustion Flow III Furlong, E. R., Mihalcea, R. M., Webber, M. E., Baer, D. S., Hanson, R. K., Parr, T. P. SPIE - INT SOC OPTICAL ENGINEERING. 1997: 324–330

  View details for Web of Science ID 000071157200033

• Diode-laser absorption sensor system for measurements of combustion pollutants Conference on Optical Technology in Fluid, Thermal, and Combustion Flow III Mihalcea, R. M., Baer, D. S., Hanson, R. K. SPIE - INT SOC OPTICAL ENGINEERING. 1997: 106–117

  View details for Web of Science ID 000071157200011

• Diode-laser measurements of temperature-dependent half-widths of H2O transitions in the 1.4 μm region Journal of Quantitative Spectroscopy & Radiative Transfer Nagali, V., Chou, S. I., Baer, D. S., Hanson, R. K. 1997; 57 (6): 795-809

  View details for DOI 10.1016/S0022-4073(97)00011-3

• Development of a Diode-Laser Based Diagnostic to Monitor H2O in High-Pressure Environments 35th Aerospace Sciences Meeting and Exhibit Nagali, V., Hanson, R. K. 1997

  View details for DOI 10.2514/6.1997-774

• An Optimized Chemical Mechanism for Natural Gas Combustion: Nitrogen Chemistry AIChE Annual Meeting Bowman, C. T., Hanson, R. K., Gardiner, W. C. 1997
• Instantaneous Temperature Imaging with Single-Wavelength Acetone PLIF 35th Aerospace Sciences Meeting and Exhibit Thurber, M. C., Kirby, B. J., Grisch, F., Hanson, R. K. 1997

  View details for DOI 10.2514/6.1997-151

• Experimental Investigation of Hypersonic Reactive Flows Around Axisymmetric Blunt Bodies 33rd Joint Propulsion Conference and Exhibit Kamel, M., Morris, C. I., Ben-Yakar, A., Hanson, R. K. 1997

  View details for DOI 10.2514/6.1997-3177

• Measurement of the Rate Coefficient of the Reaction CH + O2 -> Products in the Temperature Range 2200 to 2600 K International Journal of Chemical Kinetics Röhrig, M., Petersen, E. L., Davidson, D. F., Hanson, R. K., Bowman, C. T. 1997; 29 (10): 781-789

  View details for DOI 10.1002/(SICI)1097-4601(1997)29:10<781::AID-KIN7>3.0.CO;2-I

• Advanced Laser-Based Diagnostics for Shock Tube/Tunnel Flows plenary paper, Proceedings of the 21st Int’l. Symp. on Shock Tubes and Waves Hanson, R. K. 1997
• Reduced Kinetics Mechanisms for Ram Accelerator Combustion 33rd Joint Propulsion Conference and Exhibit Petersen, E. L., Davidson, D. F., Hanson, R. K. 1997

  View details for DOI 10.2514/6.1997-2892

• Diode laser absorption measurements of CH3Cl and CH4 near 1.65 µm Applied Optics Chou, S. I., Baer, D. S., Hanson, R. K. 1997; 36 (15): 3288-3293

  View details for DOI 10.1364/AO.36.003288

• PLIF and Schlieren Imaging of Oblique Detonation Waves 21st Int’l. Symp. on Shock Tubes and Waves Hanson, R. K., Morris, C. I. 1997
• Diode Laser Sensor System for Closed-Loop Control of a 50-kW Incinerator 33rd Joint Propulsion Conference and Exhibit Furlong, E. R., Mihalcea, R. M., Webber, M. E., Baer, D. S., Hanson, R. K., Parr, T. P. 1997

  View details for DOI 10.2514/6.1997-2833

• A Shock Tube Study of the Pyrolysis of NO2 International Journal of Chemical Kinetics Röhrig, M., Petersen, E. L., Davidson, D. F., Hanson, R. K. 1997: 483–493

  View details for DOI 10.1002/(SICI)1097-4601(1997)29:7<483::AID-KIN2>3.0.CO;2-Q

• Experimental Investigation of H2 Transverse Jet Combustion in Hypervelocity Flows 33rd Joint Propulsion Conference and Exhibit Ben-Yakar, A., Kamel, M., Morris, C. I., Hanson, R. K. 1997

  View details for DOI 10.2514/6.1997-3019

• Mesure de Température par Fluorescence Induite par Laser sur la Molécular d’Acétone Revue Scientifique et Technique de la Défense Grisch, F., Thurber, M. C., Hanson, R. K. 1997; 4: 51-60
• Argon Broadening of the R (48), R (50) and R (52) Lines of CO2 in the (00°1) ¬ (00°0) Band Journal of Quantitative Spectroscopy and Radiative Transfer Wooldridge, M. S., Hanson, R. K., Bowman, C. T. 1997; 57 (3): 425-434

  View details for DOI 10.1016/S0022-4073(96)00074-X

• Recent Advances in Laser-Based Combustion Diagnostics 35th Aerospace Sciences Meeting and Exhibit Hanson, R. K. 1997

  View details for DOI 10.2514/6.1997-115

• Simultaneous PLIF and Schlieren Imaging of Hypersonic Reactive Flows Around Blunted Cylinders 35th Aerospace Sciences Meeting and Exhibit Kamel, M., Morris, C. I., Hanson, R. K. 1997

  View details for DOI 10.2514/6.1997-913

• Kinetics Modeling of Shock-Induced Ignition in Low-Dilution CH4/O2 Mixtures at High Pressures and Intermediate Temperatures Combustion and Flame, and at WSS/CI Petersen, E. L., Davidson, D. F., Hanson, R. K. 1997: 272–90

  View details for DOI 10.1016/S0010-2180(98)00111-4

• The pressure dependence of the thermal decomposition of N2O INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Rohrig, M., Petersen, E. L., Davidson, D. F., Hanson, R. K. 1996; 28 (8): 599-608

  View details for Web of Science ID A1996UX88900005

• Tunable diode-laser absorption measurements of NO2 near 670 and 395 nm OSA 1995 Annual Meeting Mihalcea, R. M., Baer, D. S., Hanson, R. K. OPTICAL SOC AMER. 1996: 4059–64

  Abstract

  Two single-mode diode lasers were used to record high-resolution absorption spectra of NO(2) (dilute in Ar) near 670.2 and 394.5 nm over a range of temperatures (296 to 774 K) and total pressures (2.4 × 10(-2) to 1 atm). A commercial InGaAsP laser was tuned 1.3 cm(-1) at a repetition rate of 1 kHz to record the absorption spectra near 670.2 nm. In separate experiments with a prototype system, an external-cavity GaAlAs laser was frequency doubled with a quasi-phase-matched LiNbO(3) waveguide and tuned 3.5 cm(-1) to record absorption spectra near 394.5 nm. Variations of the spectral absorption coefficients with temperature and pressure were determined from measured spectra.

  View details for Web of Science ID A1996VA60800012

  View details for PubMedID 21102811

• Tunable diode-laser absorption measurements of methane at elevated temperatures OSA 1995 Annual Meeting Nagali, V., Chou, S. I., Baer, D. S., Hanson, R. K., Segall, J. OPTICAL SOC AMER. 1996: 4026–32

  Abstract

  A diode-laser sensor system based on absorption spectroscopy techniques has been developed to monitor CH(4) nonintrusively in high-temperature environments. Fundamental spectroscopic parameters, including the line strengths of the transitions in the R(6) manifold of the 2ν(3) band near 1.646 μm, havebeen determined from high-resolution absorption measurements in a heated static cell. In addition, acorrected expression for the CH(4) partition function has been validated experimentally over thetemperature range from 400 to 915 K. Potential applications of the diode-laser sensor system includeprocess control, combustion measurements, and atmospheric monitoring.

  View details for Web of Science ID A1996VA60800007

  View details for PubMedID 21102806

• Laser-induced fluorescence measurements of resonance broadening in xenon PHYSICAL REVIEW A Cedolin, R. J., Hanson, R. K., Cappelli, M. A. 1996; 54 (1): 335-342

  View details for Web of Science ID A1996UX03400038

• Instantaneous three-dimensional flow visualization of a supersonic mixing layer EXPERIMENTS IN FLUIDS Island, T. C., PATRIE, B. J., Mungal, M. G., Hanson, R. K. 1996; 20 (4): 249-256

  View details for Web of Science ID A1996TY89200003

• Temperature imaging in a supersonic free jet of combustion gases with two-line OH fluorescence APPLIED OPTICS Palmer, J. L., Hanson, R. K. 1996; 35 (3): 485-499

  Abstract

  Temperature measurements were performed in a shock-tunnel-generated free jet of hydrogen/oxygen reaction products diluted in argon with a nonsimultaneous, two-excitation-line planar laser-induced fluorescence technique with the hydroxyl radical (OH) as a tracer. Single-shot images were obtained with broadband excitation of isolated transitions in the A(2)Σ(+) ? X(2)Π(1, 0) band of OH near 282 nm, with broadband, temporally integrated detection of the resulting nonresonant emission. A measurement of the fluorescence lifetime in the free jet showed no variation with excited rotational level, allowing the rotational temperature to be obtained from the ratio of single-shot images with laser excitation of different rovibronic transitions.

  View details for Web of Science ID A1996TR97200018

  View details for PubMedID 21069034

• Temperature and Mixture-Fraction Imaging of Gaseous Flows Using Acetone PLIF Fluid Dynamics Conference Hanson, R. K., Mungal, M. G., Grisch, F., Thurber, M. C., Smith, S. H., Hasselbrink, E. F. 1996

  View details for DOI 10.2514/6.1996-1964

• Tunable diode laser absorption measurements of NO2 near 670 nm and 395 nm 34th Aerospace Sciences Meeting and Exhibit Mihalcea, R. M., Baer, D. S., Hanson, R. K. 1996

  View details for DOI 10.2514/6.1996-173

• LIF spectroscopy of NO and O-2 in high-pressure flames COMBUSTION SCIENCE AND TECHNOLOGY DIROSA, M. D., Klavuhn, K. G., Hanson, R. K. 1996; 118 (4-6): 257-283

  View details for Web of Science ID A1996WP79900002

• Combustion control and monitoring using a multiplexed diode-laser sensor system 32nd Joint Propulsion Conference and Exhibit Furlong, E. R., Baer, D. S., Hanson, R. K. 1996

  View details for DOI 10.2514/6.1996-2763

• Measurements of H2O and temperature in high-pressure environments using near-IR diode-laser absorption Advanced Measurement and Ground Testing Conference Nagali, V., Chou, S. I., Baer, D. S., Hanson, R. K. 1996

  View details for DOI 10.2514/6.1996-2225

• Combustion control using a multiplexed diode-laser sensor system 26th International Symposium on Combustion Furlong, E. R., Baer, D. S., Hanson, R. K. COMBUSTION INSTITUTE. 1996: 2851–2858

  View details for Web of Science ID 000083308500337

• Real gas corrections in shock tube studies at high pressures ISRAEL JOURNAL OF CHEMISTRY Davidson, D. F., Hanson, R. K. 1996; 36 (3): 321-326

  View details for Web of Science ID A1996WN99300014

• Combustion control using a multiplexed diode-laser sensor system Conference on Lasers as Tools for Manufacturing of Durable Goods and Microelectronics Baer, D. S., Furlong, E. R., Hanson, R. K. SPIE - INT SOC OPTICAL ENGINEERING. 1996: 208–215

  View details for Web of Science ID A1996BF76J00021

• High-pressure methane oxidation behind reflected shock waves 26th International Symposium on Combustion Petersen, E. L., Rohrig, M., Davidson, D. F., Hanson, R. K., Bowman, C. T. COMBUSTION INSTITUTE. 1996: 799–806

  View details for Web of Science ID 000083308500095

• Real-time process control using diode-laser absorption sensors Conference on the Application of Tunable Diode and Other Infrared Sources for Atmospheric Studies and Industrial Process Monitoring Baer, D. S., Furlong, E. R., Hanson, R. K. SPIE - INT SOC OPTICAL ENGINEERING. 1996: 205–213

  View details for Web of Science ID A1996BG67Q00021

• PLIF imaging of hypersonic reactive flow around blunt bodies 26th International Symposium on Combustion Kamel, M. R., Morris, C. I., Stouklov, I. G., Hanson, R. K. COMBUSTION INSTITUTE. 1996: 2909–2915

  View details for Web of Science ID 000083308500344

• PLIF imaging of the supersonic reactive flows around projectiles in an expansion tube 34th Aerospace Sciences Meeting and Exhibit Morris, C. I., Kamel, M. R., Stouklov, I. G., Hanson, R. K. 1996

  View details for DOI 10.2514/6.1996-855

• Laser-induced fluorescence diagnostics for xenon Hall thrusters 32nd Joint Propulsion Conference and Exhibit Cedolin, R. J., Hargus, W. A., Hanson, R. K., Cappelli, M. A. 1996

  View details for DOI 10.2514/6.1996-2986

• Multi-Line Fluorescence Imaging of the Rotational Field in a Shock-Tunnel Free Jet Applied Physics B Palmer, J. L., McMillin, B. K., Hanson, R. K. 1996; 63: 167-178

  View details for DOI 10.1007/BF01095269

• Real Gas Effects at High Pressures and Temperatures in Shock Tube Studies 33rd JANNAF Combustion Meeting Davidson, D. F., Petersen, E. L., Bates, R. W., Hanson, R. K. 1996
• Combustion Control using a Multiplexed Diode-Laser Sensor System 34th Aerospace Sciences Meeting and Exhibit Furlong, E. R., Baer, D. S., Hanson, R. K. 1996

  View details for DOI 10.2514/6.1996-756

• PLIF Imaging and Thermometry of NO/N2 Shock Layer Flows in an Expansion Tube 34th Aerospace Sciences Meeting and Exhibit Houwing, A. F., Thurber, M. C., Wehe, S. D., Kamel, M., Morris, C., Hanson, R. K., 1996

  View details for DOI 10.2514/6.1996-537

• Expansion tube investigation of ram-accelerator projectile flowfields 32nd Joint Propulsion Conference and Exhibit Morris, C. I., Kamel, M. R., Hanson, R. K. 1996

  View details for DOI 10.2514/6.1996-2680

• Measurements of the OH A-X (0,0) 306nm Absorption Bandhead at 60 atm and 1735K Journal of Quantitative Spectroscopy and Radiative Transfer Davidson, D. F., Röhrig, M., Peterson, E. L., DiRosa, M. D., Hanson, R. K. 1996; 55 (6): 755-762

  View details for DOI 10.1016/0022-4073(96)00024-6

• A Shock Tube Study of Reactions of CN with HCN, OH and H2 using CN and OH Laser Absorption International Journal of Chemical Kinetics Wooldridge, S. T., Hanson, R. K., Bowman, C. T. 1996; 28 (4): 245-258

  View details for DOI 10.1002/(SICI)1097-4601(1996)28:4<245::AID-KIN2>3.0.CO;2-V

• The scalar concentration field of the axisymmetric jet in crossflow 34th Aerospace Sciences Meeting and Exhibit Smith, S. H., Hasselbrink, E. F., Mungal, M. G., Hanson, R. K. 1996

  View details for DOI 10.2514/6.1996-198

• Optical Diagnostics for Ground Testing: An Overview invited plenary speaker at 19th AIAA Advanced Measurement and Ground Testing Technology Conf. Hanson, R. K. 1996
• Multiplexed Diode Laser Sensor System for Measurements of CO, CO2, CH4 and H2O in Combustion Flows Symp. on Optical Sensing for Environment and Process Monitoring, Air & Waste Management Association Mihalcea, R. M., Baer, D. S., Hanson, R. K. 1996
• Shock Tube Measurements of the Equation of State of Argon 35th Aerospace Sciences Meeting and Exhibit Davidson, D. F., Bates, R., Petersen, E. L., Hanson, R. K. 1996

  View details for DOI 10.2514/6.1997-984

• Combustion Control Using an Advanced Multiplexed Diode-Laser Sensor System 33rd JANNAF Combustion Meeting Furlong, E. R., Baer, D. S., Hanson, R. K. 1996
• Hydrocarbon measurements using diode-laser absorption near 1.65 micron 34th Aerospace Sciences Meeting and Exhibit Chou, S. I., Nagali, V., Baer, D. S., Hanson, R. K. 1996

  View details for DOI 10.2514/6.1996-746

• Measurements of H2O in High-Pressure Flows Using Near-IR Diode-Laser Absorption 34th Aerospace Sciences Meeting and Exhibit Nagali, V. S., Baer, D. S., Hanson, R. K. 1996

  View details for DOI 10.2514/6.1996-846

• Temperature Imaging with Single- and Dual-Wavelength Acetone PLIF 32nd Joint Propulsion Conference and Exhibit Thurber, M. C., Grisch, F., Hanson, R. K. 1996

  View details for DOI 10.2514/6.1996-2936

• Ignition Delay Times of Ram Accelerator Mixtures 32nd Joint Propulsion Conference and Exhibit Petersen, E. L., Röhrig, M., Davidson, D. F., Hanson, R. K. 1996

  View details for DOI 10.2514/6.1996-2681

• Ram Accelerator Mixture Chemistry: Kinetics and Ignition Measurements 33rd JANNAF Combustion Meeting Petersen, E. L., Davidson, D. F., Hanson, R. K. 1996
• Combustion Control Using an Advanced Multiplexed Diode-Laser Sensor System WSS/CI Fall Meeting Furlong, E. R., Baer, D. S., Hanson, R. K. 1996
• A SHOCK-TUBE STUDY OF METHYL-METHYL REACTIONS BETWEEN 1200 AND 2400 K INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Davidson, D. F., DIROSA, M. D., Chang, E. J., Hanson, R. K., Bowman, C. T. 1995; 27 (12): 1179-1196

  View details for Web of Science ID A1995TG72500004

• LASER-INDUCED FLUORESCENCE MEASUREMENTS OF NO AND OH MOLE FRACTION IN FUEL-LEAN, HIGH-PRESSURE (1-10ATM) METHANE FLAMES - FLUORESCENCE MODELING AND EXPERIMENTAL VALIDATION JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER BATTLES, B. E., Hanson, R. K. 1995; 54 (3): 521-537

  View details for Web of Science ID A1995RR23200007

• SHOCK TUNNEL FLOW VISUALIZATION USING PLANAR LASER-INDUCED FLUORESCENCE IMAGING OF NO AND OH SHOCK WAVES Palmer, J. L., Hanson, R. K. 1995; 4 (6): 313-323

  View details for Web of Science ID A1995QY00600003

• COMMUNICATION - REVISED VALUES FOR THE RATE COEFFICIENTS OF ETHANE AND METHANE DECOMPOSITION INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Davidson, D. F., Hanson, R. K., Bowman, C. T. 1995; 27 (3): 305-308

  View details for Web of Science ID A1995QH52500007

• EXPERIMENTAL INVESTIGATION OF VELOCITY SLIP NEAR AN ARCJET EXIT PLANE AIAA JOURNAL LIEBESKIND, J. G., Hanson, R. K., Cappelli, M. A. 1995; 33 (2): 373-375

  View details for Web of Science ID A1995QK49200029

• Measurements of argon collision broadening in the CN B2Σ+ ← X2Σ+(0,0) spectrum Journal of Quantitative Spectroscopy and Radiative Transfer Wooldridge, S. T., Hanson, R. K., Bowman, C. T. 1995; 53 (5): 481-492

  View details for DOI 10.1016/0022-4073(95)90048-9

• Single-shot OH PLIF thermometry in a reacting, supersonic free jet 33rd Aerospace Sciences Meeting and Exhibit Palmer, J. L., Hanson, R. K. 1995

  View details for DOI 10.2514/6.1995-517

• PLIF imaging of NO and O2 in high-pressure flames Optical Techniques in Fluid, Thermal, and Combustion Flow DiRosa, M. D., Klavuhn, K. G., Hanson, R. K. 1995

  View details for DOI 10.1117/12.221555

• Planar Concentration Measurements of a Jet in Cross-flow APS/DFD Meeting Smith, S., Hasselbrink, E., Mungal, M. G., Hanson, R. K. 1995
• A Shock Tube Study of Nitric Acid Decomposition Shock Waves @ Marseille II (Springer-Verlag) Wooldridge, M. S., Hanson, R. K., Bowman, C. T. 1995: 83-88

  View details for DOI 10.1007/978-3-642-78832-1_14

• PLIF thermometry in a high temperature shock layer flow over a cylinder in a supersonic jet 33rd Aerospace Sciences Meeting and Exhibit Houwing, A. F., Palmer, J. L., Boyce, R. R., Thurber, M. C., Wehe, S. D., Hanson, R. K. 1995

  View details for DOI 10.2514/6.1995-515

• LIF lineshape analysis of the xenon 6s(3/2)2 exp 0-6p(3/2)2 and 6s(3/2)1 exp 0-6p(1/2)0 transitions in a glow discharge 26th Plasmadynamics and Lasers Conference Cedolin, R. J., Hanson, R. K., Cappelli, M. A. 1995

  View details for DOI 10.2514/6.1995-1969

• Scanned- and fixed-wavelength absorption diagnostics for combustion measurements using a multiplexed diode-laser sensor system 33rd Aerospace Sciences Meeting and Exhibit Baer, D. S., Nagali, V., Furlong, E. R., Hanson, R. K., Newfield, M. E. 1995

  View details for DOI 10.2514/6.1995-426

• PLIF imaging of NO and O-2 in high-pressure flames Conference on Optical Techniques in Fluid, Thermal, and Combustion Flow DIROSA, M. D., Klavuhn, K. G., Hanson, R. K. SPIE - INT SOC OPTICAL ENGINEERING. 1995: 509–518

  View details for Web of Science ID A1995BE37R00051

• Development of an Expansion Tube for Investigation of Combustion in Supersonic Projectile Flowfields 31st Joint Propulsion Conference and Exhibit Morris, C. I., Kamel, M., Thurber, M. C., Wehe, S. D., Hanson, R. K. 1995

  View details for DOI 10.2514/6.1995-2717

• Expansion Tube Studies of Hypersonic Reactive Flows around Projectiles 33rd AIAA Aerospace Sciences Meeting Kamel, M. R., Morris, C. I., Thurber, M. C., Wehe, S. D., Hanson, R. K. 1995

  View details for DOI 10.2514/6.1995-233

• Expansion Tube Investigation of Combustion Structures in Supersonic Projectile Flowfields 20th Int. Symp. on Shock Waves Morris, C. I., Kamel, M., Thurber, M. C., Wehe, S. D., Hanson, R. K. 1995
• Development and Application of a Diode Laser Absorption Diagnostic for Shock Tube Studies of CO2 Reactions WSS/CSS Meeting of Comb. Inst. Wooldridge, M. S., Hanson, R. K., Bowman, C. T. 1995
• Shock-Induced Ignition of High-Pressure H2-O2-Ar and CH4-O2-Ar Mixtures 31st Joint Propulsion Conference and Exhibit Petersen, E. L., Davidson, D. F., Röhrig, M., Hanson, R. K. 1995

  View details for DOI 10.2514/6.1995-3113

• High-Pressure Shock Tube Measurements of Ignition Times in Stoichiometric H2/O2/Ar Mixtures 20th Int. Symp. on Shock Waves Petersen, E. L., Davidson, D. F., Röhrig, M., Hanson, R. K. 1995
• Semiconductor Laser Diagnostics of Kinetic and Population Temperatures in High-Enthalpy Flows 19th Int. Symp. on Shock Waves (ISSW 19) Chang, H. A., Baer, D. S., Hanson, R. K. 1995

  View details for DOI 10.1007/978-3-642-78832-1_5

• Dual-Laser PLIF Imaging Techniques for Shock Tube Studies of Mixing and Combustion 19th Int. Symp. on Shock Waves (ISSW 19) McMillin, B. K., Seitzman, J. M., Palmer, J. L., Hanson, R. K. 1995: 315–20

  View details for DOI 10.1007/978-3-642-78829-1_51

• An Improved Determination of the 216.615 nm Absorption Coefficient for the Methyl Radicals Journal of Quantitative Spectroscopy and Radiative Transfer Davidson, D. F., DiRosa, M. D., Chang, E. J., Hanson, R. K. 1995; 53 (5): 581-583

  View details for DOI 10.1016/0022-4073(95)90056-X

• Temperature Measurement by Acetone LIF with Dual-Wavelength Excitation WSS/CI paper Grisch, F., Thurber, M. C., Hanson, R. K. 1995
• Simultaneous Laser Absorption Measurements of CN and OH in a Shock Tube Study of HCN + OH -> Products Joint Technical Meeting of CSS and WSS, Mexican National Section, and American Flame Research Committee Wooldridge, S. T., Hanson, R. K., Bowman, C. T. 1995
• Development of an Expansion Tube for Investigation of Combustion in Supersonic Projectile Flowfields RAMACII, 2nd Int. Meeting on Ram Accelerators Morris, C. I., Kamel, M., Thurber, M. C., Wehe, S. D., Hanson, R. K. 1995
• The Role of Lasers in Shock Tube Studies of Chemical Kinetics 19th Int. Symp. on Shock Waves (ISSW 19) Hanson, R. K. 1995: 7–13

  View details for DOI 10.1007/978-3-642-78832-1_2

• Diode-Laser Sensor System for Methane, Water and Temperature Measurements in Combustion Environments WSS/CI paper Nagali, V., Furlong, E. R., Chou, S. I., Mihalcea, R. M., Baer, D. S., Hanson, R. K. 1995
• Optimized Chemical Kinetics for Modeling Natural Gas Combustion American Flame Research Committee Frenklach, M., Wang, H., Goldenberg, M., Bowman, C. T., Hanson, R. K., Smith, G. P., Golden, D. M., Gardiner Jr, W. C., Lissianski, V. 1995
• Diode-Laser Sensor System for Multi-Species and Multi-Parameter Measurements in Combustion Flows 31st Joint Propulsion Conference and Exhibit Nagali, V., Furlong, T., Chou, S. I., Mihalcea, R. M., Baer, D. S., Hanson, R. K. 1995

  View details for DOI 10.2514/6.1995-2684

• Simultaneous Laser Absorption Measurements of CN and OH in a Shock Tube Study of HCN + OH -> Products International Journal of Chemical Kinetics Wooldridge, S. T., Hanson, R. K., Bowman, C. T. 1995; 27 (11): 1075-1087

  View details for DOI 10.1002/kin.550271105

• Absorption Lineshape Measurements of the OH A-X (0,0) 306 nm Bandhead at High Pressures 20th Int. Symp. on Shock Waves Davidson, D. F., Röhrig, M., Petersen, E. L., DiRosa, M. D., Hanson, R. K. 1995
• Imaging of Hypersonic Reactive Flow around Cylinders and Wedges WSS/CI paper, Stanford, CA Kamel, M., Morris, C. I., Stouklov, I., Hanson, R. K. 1995: 95F-196
• A Shock Tube Study of the Pyrolysis of NO2 WSS/CI Röhrig, M., Petersen, E. L., Davidson, D. F., Hanson, R. K. 1995
• A Laser Photolysis Shock Tube Study of the Reaction of OH with NH3 19th Int. Symp. on Shock Waves (ISSW 19) Mertens, J. D., Wooldridge, M. S., Hanson, R. K. 1995: 37–42

  View details for DOI 10.1007/978-3-642-78832-1_6

• A Shock Tube Study of High-Pressure Methane Oxidation WSS/CI paper Petersen, E. L., Davidson, D. F., Röhrig, M., Hanson, R. K., Bowman, C. T. 1995
• Recent Developments in Laser-Based Absorption and Fluorescence Diagnostics for Gases 8th Int. Symp. on Transport Phenomena Hanson, R. K., Baer, D. S., McMillin, B. K., Yip, B. 1995
• COLLISION BROADENING AND SHIFT OF NO GAMMA(0,0) ABSORPTION-LINES BY O2 AND H2O AT HIGH-TEMPERATURES JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER DIROSA, M. D., Hanson, R. K. 1994; 52 (5): 515-529

  View details for Web of Science ID A1994PW15700001

• TEMPERATURE-DEPENDENT COLLISION-BROADENING PARAMETERS OF H2O LINES IN THE 1.4-MU-M REGION USING DIODE-LASER ABSORPTION-SPECTROSCOPY JOURNAL OF MOLECULAR SPECTROSCOPY Langlois, S., BIRBECK, T. P., Hanson, R. K. 1994; 167 (2): 272-281

  View details for Web of Science ID A1994PJ14200004

• A COMBINED OH/ACETONE PLANAR LASER-INDUCED FLUORESCENCE IMAGING TECHNIQUE FOR VISUALIZING COMBUSTING FLOWS EXPERIMENTS IN FLUIDS Yip, B., Miller, M. F., Lozano, A., Hanson, R. K. 1994; 17 (5): 330-336

  View details for Web of Science ID A1994PL46500006

• DUAL DIODE-LASER FIBEROPTIC DIAGNOSTIC FOR WATER-VAPOR MEASUREMENTS OPTICS LETTERS Arroyo, M. P., BIRBECK, T. P., Baer, D. S., Hanson, R. K. 1994; 19 (14): 1091-1093

  Abstract

  We present a novel diode-laser diagnostic for water-vapor measurements based on absorption spectroscopy. Two InGaAsP diode lasers were used to record H(2)O absorption line shapes near 1395 nm at a 3-kHz repetition rate along a single path through a water-vapor flow field generated in a shock tube. The use of two lasers permits simultaneous line-shape measurements in different spectral regions and facilitates the selection of appropriate line pairs for thermometry. The wavelength tuning rate was determined by use of a fiber-optic device known as a ring interferometer. Flow-field conditions (1320 K, 0.3 atm) inferred from measured line shapes compared favorably with calculated values.

  View details for Web of Science ID A1994NW48300027

  View details for PubMedID 19844543

• VUV ABSORPTION DIAGNOSTIC FOR SHOCK-TUBE KINETICS STUDIES OF C2H4 JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Zelson, L. S., Davidson, D. F., Hanson, R. K. 1994; 52 (1): 31-43

  View details for Web of Science ID A1994PB53300003

• APPLICATION OF QUANTITATIVE 2-LINE OH PLANAR LASER-INDUCED FLUORESCENCE FOR TEMPORALLY RESOLVED PLANAR THERMOMETRY IN REACTING FLOWS APPLIED OPTICS Seitzman, J. M., Hanson, R. K., DeBarber, P. A., Hess, C. F. 1994; 33 (18): 4000-4012

  Abstract

  A temporally resolved approach for measurement of two-dimensional temperature fields in reacting flows is experimentally investigated. The method, based on planar laser-induced fluorescence of the hydroxyl (OH) radical, is applicable in many combustion environments, including variable density flow fields. As a means of examining the accuracy of the technique, temperature images, from 1300 to 3000 K and 0.4 to 3 atm, have been acquired in shock-heated H(2)-O(2)-Ar flows with a two-laser, two-image ratio scheme. A complete measurement system for producing accurate, effectively instantaneous temperature images is described; the system includes single-shot monitors for laser-sheet energy distributions and spectral profiles. Temperature images obtained with the OH A(2)Σ(+) ? X(2)II (1, 0) P(1)(7)-Q(2)(11) transition pair exhibit a systematic error of only 7% over the entire range of conditions, with the error most likely dominated by shot-to-shot fluctuations in the lasers'spectral profiles. The largest error source in the instantaneous temperature images is photon shot noise. A group of OH transition pairs that provide good temperature sensitivity and strong signals for reduced shot-noise error over a range of flow-field conditions is also presented.

  View details for Web of Science ID A1994NU52500030

  View details for PubMedID 20935747

• SENSITIZED PHOSPHORESCENCE - A GAS-PHASE MOLECULAR MIXING DIAGNOSTIC EXPERIMENTS IN FLUIDS Yip, B., Lozano, A., Hanson, R. K. 1994; 17 (1-2): 16-23

  View details for Web of Science ID A1994NW36500003

• DIODE-LASER ABSORPTION TECHNIQUE FOR SIMULTANEOUS MEASUREMENTS OF MULTIPLE GASDYNAMIC PARAMETERS IN HIGH-SPEED FLOWS CONTAINING WATER-VAPOR APPLIED OPTICS Arroyo, M. P., Langlois, S., Hanson, R. K. 1994; 33 (15): 3296-3307

  Abstract

  A distributed-feedback InGaAsP diode laser, emitting near 1.38 µm, was used to acquire spectrally resolved absorption profiles of H(2)O lines in the ν(1) + ν(3) band at a repetition rate of 10 kHz. The profiles were used for simultaneous measurements of flow parameters in high-speed, one-dimensional (1-D) transient flows generated in a shock tube. Velocity was determined from the Doppler shift, which was measured with a pair of profiles simultaneously acquired at different angles with respect to the flow direction. Temperature was determined from the intensity ratio of two adjacent lines. Pressure and density were found from the fractional absorption. From these primary gasdynamic variables, the mass and momentum fluxes were determined. Experiments were conducted with three different gas mixtures in the shock tube: pure H(2)O at initial pressures lower than 3 Torr, up to 6% of H(2)O in O(2) at initial pressures below 120 Torr, and up to 8% of H(2)O in O(2) at initial pressures below 35 Torr. In the third case, pyrolysis of H(2) /O(2) behind incident shocks produced known yields of H(2)O. With all three mixtures, results compare well with 1-D shock calculations. This H(2)O diagnostic strategy shows promise for applications in both ground and flight testing.

  View details for Web of Science ID A1994NM30800022

  View details for PubMedID 20885702

• INSTANTANEOUS 3-DIMENSIONAL FLOW VISUALIZATION BY RAPID ACQUISITION OF MULTIPLE PLANAR FLOW IMAGES OPTICAL ENGINEERING PATRIE, B. J., Seitzman, J. M., Hanson, R. K. 1994; 33 (3): 975-980

  View details for Web of Science ID A1994NA36000044

• COLLISION-BROADENING AND COLLISION-SHIFT OF NO GAMMA(0,0) ABSORPTION-LINES BY H2O, O-2, AND NO AT 295-K JOURNAL OF MOLECULAR SPECTROSCOPY DIROSA, M. D., Hanson, R. K. 1994; 164 (1): 97-117

  View details for Web of Science ID A1994MZ37700007

• Semiconductor Laser Diagnostics for Xenon Plasmas 30th Joint Propulsion Conference and Exhibit Cedolin, R. J., Hanson, R. K., Cappelli, M. A. 1994

  View details for DOI 10.2514/6.1994-2739

• DIODE-LASER MEASUREMENTS OF H2O LINE-INTENSITIES AND SELF-BROADENING COEFFICIENTS IN THE 1.4-MU-M REGION JOURNAL OF MOLECULAR SPECTROSCOPY Langlois, S., BIRBECK, T. P., Hanson, R. K. 1994; 163 (1): 27-42

  View details for Web of Science ID A1994MN46200004

• Semiconductor laser absorption diagnostics of atomic nitrogen for hypersonic flowfield measurements 32nd Aerospace Sciences Meeting and Exhibit Chang, H. A., Baer, D. S., Hanson, R. K. 1994

  View details for DOI 10.2514/6.1994-385

• Instantaneous three-dimensional flow visualization by rapid acquisition of multiple planar flow images Optical Engineering Patrie, B. J., Seitzman, J. M., Hanson, R. K. 1994

  View details for DOI 10.1117/12.160888

• Comparison of NO and OH PLIF Temperature Measurements in a Scramjet Model Flowfield 29th Joint Propulsion Conference and Exhibit McMillin, B. K., Seitzman, J. M., Hanson, R. K. 1994

  View details for DOI 10.2514/6.1993-2035

• CONCENTRATION MEASUREMENTS IN A TRANSVERSE JET BY PLANAR LASER-INDUCED FLUORESCENCE OF ACETONE AIAA JOURNAL Lozano, A., Smith, S. H., Mungal, M. G., Hanson, R. K. 1994; 32 (1): 218-221

  View details for Web of Science ID A1994MQ44700032

• PLIF Imaging of Transient Shock Phenomena in Hypersonic Flows 25th Plasmadynamics and Lasers Conference Palmer, J. L., Houwing, F. P., Hanson, R. K. 1994

  View details for DOI 10.2514/6.1994-2642

• A Shock Tube Study of the OH + OH -> H2O + O Reaction International Journal of Chemical Kinetics Wooldridge, M. S., Hanson, R. K., Bowman, C. T. 1994; 26 (4): 389-401

  View details for DOI 10.1002/kin.550260402

• Quantitative Planar Laser-Induced Fluorescence Imaging of Radical Species in High Pressure Flames 32nd Aerospace Sciences Meeting and Exhibit Battles, B., Seitzman, J. M., Hanson, R. K. 1994

  View details for DOI 10.2514/6.1994-229

• Multi-Species Diode-Laser Sensor System for H2O and O2 Measurements 25th Plasmadynamics and Lasers Conference Baer, D. S., Hanson, R. K., Newfield, M. E., Gopaul, N. K. 1994

  View details for DOI 10.2514/6.1994-2643

• A Shock Tube Study of the Pyrolysis of C2H5I ESS/CI Meeting Mertens, J. D., Wooldridge, M. S., Hanson, R. K. 1994
• Thermochemical Nonequilibrium Design Calculations for Detailed Hypervelocity Experiments in the LENS Facility 6th Joint Thermophysics and Heat Transfer Conference Boyd, I. D., Srinivasan, A., Muntz, E. P., Hanson, R. K., Holden, M. S., 1994

  View details for DOI 10.2514/6.1994-2097

• PLIF Measurements of Temperature and Velocity in a Reacting Supersonic Free Jet with OH 32nd Aerospace Sciences Meeting and Exhibit Palmer, J., Hanson, R. K. 1994

  View details for DOI 10.2514/6.1994-618

• Reexamination of Shock-Tube Measurements of the Rate Coefficient of H + O2 -> OH + O Journal of Physical Chemistry Yu, C. L., Frenklach, M., Masten, D. A., Hanson, R. K., Bowman, C. T. 1994; 98 (17): 4770-4771

  View details for DOI 10.1021/j100068a048

• Multiple Scalar Planar Fluorescence Imaging for Reacting Flows 32nd Aerospace Sciences Meeting and Exhibit Seitzman, J. M., Miller, M. F., Hanson, R. K., DeBarber, P., Hess, C. 1994

  View details for DOI 10.2514/6.1994-228

• Multiplexed Diode-Laser Sensor System for Simultaneous H2O, O2 and Temperature Measurements Optics Letters Baer, D. S., Hanson, R. K., Newfield, M. E., Gopaul, N. K. 1994; 19: 1900-1902

  View details for DOI 10.1364/OL.19.001900

• An Experimental Investigation of Supersonic Reacting Mixing Layers 32nd Aerospace Sciences Meeting and Exhibit Miller, M. F., Island, T. C., Seitzman, J. M., Bowman, C. T., Mungal, M. G., Hanson, R. K. 1994

  View details for DOI 10.2514/6.1994-823

• 2-LINE PLANAR FLUORESCENCE FOR TEMPORALLY RESOLVED TEMPERATURE IMAGING IN A REACTING SUPERSONIC-FLOW OVER A BODY APPLIED PHYSICS B-PHOTOPHYSICS AND LASER CHEMISTRY Seitzman, J. M., Hanson, R. K. 1993; 57 (6): 385-391

  View details for Web of Science ID A1993ML59700003

• A STUDY OF ETHANE DECOMPOSITION IN A SHOCK-TUBE USING LASER-ABSORPTION OF CH3 INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Davidson, D. F., DIROSA, M. D., Hanson, R. K., Bowman, C. T. 1993; 25 (11): 969-982

  View details for Web of Science ID A1993MC21900008

• LASER-INDUCED FLUORESCENCE DIAGNOSTIC FOR TEMPERATURE AND VELOCITY-MEASUREMENTS IN A HYDROGEN ARCJET PLUME APPLIED OPTICS LIEBESKIND, J. G., Hanson, R. K., Cappelli, M. A. 1993; 32 (30): 6117-6127

  Abstract

  A diagnostic has been developed to measure velocity and translational temperature in the plume of a 1-kW-class arcjet thruster operating on hydrogen. Laser-induced fluorescence with a narrow-band cw laser is used to probe the Balmer α transition of excited atomic hydrogen. The velocity is determined from the Doppler shift of the fluorescence excitation spectrum, whereas the temperature is inferred from the lineshape. Analysis shows that although Doppler broadening is the only significant broadening mechanism, the fine structure of the transition must be taken into account. Near the exit plane, axial velocities vary from 4 to 14 km/s, radial velocities vary from 0 to 4 km/s, and swirl velocities are shown to be relatively small. Temperatures from 1000 to 5000 K indicate high dissociation fractions.

  View details for Web of Science ID A1993MC05300035

  View details for PubMedID 20856439

• ABSORPTION-MEASUREMENTS OF WATER-VAPOR CONCENTRATION, TEMPERATURE, AND LINE-SHAPE PARAMETERS USING A TUNABLE INGAASP DIODE-LASER APPLIED OPTICS Arroyo, M. P., Hanson, R. K. 1993; 32 (30): 6104-6116

  Abstract

  A tunable diode laser diagnostic based on spectrally resolved laser absorption has been developed to detect water vapor. The system uses a distributed feedback InGaAsP diode laser, emitting at ~ 1.38 µm. The diode laser is tuned in wavelength by modulation of the current, resulting in 1-cm(-1) tuning at 80-Hz repetition rate. The directly measured absorption spectra yield values for water-vapor concentration and temperature, as well as a collision-broadening line shape. To our knowledge, we accurately determined required data for H(2)O line strengths and self-broadening coefficients for several spectral lines in a static cell filled with pure water vapor. The temperature and concentration of the water vapor present in laboratory room air and in the postflame gases above a methane-air flat flame burner have also been measured. These results agree well with calculated values and independent measurements.

  View details for Web of Science ID A1993MC05300034

  View details for PubMedID 20856438

• LASER-DIODE WAVELENGTH-MODULATION SPECTROSCOPY FOR SIMULTANEOUS MEASUREMENT OF TEMPERATURE, PRESSURE, AND VELOCITY IN SHOCK-HEATED OXYGEN FLOWS APPLIED OPTICS PHILIPPE, L. C., Hanson, R. K. 1993; 32 (30): 6090-6103

  Abstract

  Wavelength modulation at 10 MHz of an AlGaAs laser diode, superposed on repetitive linear scans of wavelength, is applied to measure second-harmonic absorption line shapes of oxygen in the A band. Theoretical expressions of the harmonic line shapes, including the effect of laser amplitude modulation and varying modulation depth, are presented. A least-squares fit of the experimental line shapes to theoretical second-harmonic line shapes permits simultaneous determination of the temperature and the pressure. The use of high-repetition-rate (10-kHz) linear scans of the studied wavelength region permits application of the technique to high-speed unidimensional transient flows generated in a shock tube; velocity is derived from the Doppler shift of the absorption profiles.

  View details for Web of Science ID A1993MC05300033

  View details for PubMedID 20856437

• MODELING OF SPATIAL DISTORTIONS IN A HIGH-SPEED IMAGE CONVERTER CAMERA REVIEW OF SCIENTIFIC INSTRUMENTS PATRIE, B. J., Seitzman, J. M., Hanson, R. K. 1993; 64 (10): 2901-2904

  View details for Web of Science ID A1993MC13700027

• CONTINUOUS-WAVE DYE-LASER TECHNIQUE FOR SIMULTANEOUS, SPATIALLY-RESOLVED MEASUREMENTS OF TEMPERATURE, PRESSURE, AND VELOCITY OF NO IN AN UNDEREXPANDED FREE JET APPLIED OPTICS DIROSA, M. D., Chang, A. Y., Hanson, R. K. 1993; 32 (21): 4074-4087

  Abstract

  Gas dynamic quantities within an underexpanded nitrogen free jet, seeded with 0.5% NO, were measured nonintrusively by using an intracavity-doubled, rapid-tuning, cw ring dye laser. The UV beam passed obliquely through the jet axis, and its frequency repetitively scanned across adjacent rotational lines in the NO gamma band near 225 nm at a rate of 4 kHz. Spatially resolved excitation scans were obtained by monitoring the induced broadband fluoresence. Modeling the Doppler-shifted excitation scans with Voigt profiles permitted simultaneous determinations of NO velocity, rotational temperature, and pressure. Zero Doppler shift was referenced to an absorption trace obtained across a static cell and recorded concurrently with the excitation scan. Typically, the measured and predicted axial distributions agreed within 10%. At high Mach numbers there was evidence of rotational freezing of NO.

  View details for Web of Science ID A1993LN83700040

  View details for PubMedID 20830049

• A CW LASER-ABSORPTION DIAGNOSTIC FOR METHYL RADICALS JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Davidson, D. F., Chang, A. Y., DIROSA, M. D., Hanson, R. K. 1993; 49 (5): 559-571

  View details for Web of Science ID A1993LB52500008

• COMPARISON OF EXCITATION TECHNIQUES FOR QUANTITATIVE FLUORESCENCE IMAGING OF REACTING FLOWS AIAA JOURNAL Seitzman, J. M., Hanson, R. K. 1993; 31 (3): 513-519

  View details for Web of Science ID A1993KU60600015

• Planar Fluorescence Imaging in Gases Chapter 6, in Experimental Methods for Flows with Combustion Seitzman, J. M., Hanson, R. K. edited by Taylor, A. Academic Press. 1993: 405–466
• RESONANT HOLOGRAPHIC INTERFEROMETRY - A MULTIPOINT, MULTIPARAMETER DIAGNOSTICS TOOL FOR HYPERSONIC FLOW NATO Advanced Research Workshop on New Trends in Instrumentation for Hypersonic Research Trolinger, J. D., Hanson, R. K., Yip, B., Battles, B. KLUWER ACADEMIC PUBL. 1993: 123–134

  View details for Web of Science ID A1993BC72S00011

• LASER DIAGNOSTICS FOR COMBUSTION AND PROPULSION CONF ON LASER APPLICATIONS IN COMBUSTION AND COMBUSTION DIAGNOSTICS Hanson, R. K. SPIE - INT SOC OPTICAL ENGINEERING. 1993: 84–97

  View details for Web of Science ID A1993BY44U00007

• A comparison of arcjet plume properties to model predictions 31st Aerospace Sciences Meeting Cappelli, M. A., Liebeskind, J. G., Hanson, R. K., Butler, G. W., Redmond, W. A., King, D. Q. 1993

  View details for DOI 10.2514/6.1993-820

• Compressibility effects in a reacting mixing layer 29th Joint Propulsion Conference and Exhibit Miller, M. F., Island, T. C., Seitzman, J. M., Bowman, C. T., Mungal, M. G., Hanson, R. K. 1993

  View details for DOI 10.2514/6.1993-1771

• LASER-BASED DIAGNOSTICS FOR HYPERSONIC FLOWS NATO Advanced Research Workshop on New Trends in Instrumentation for Hypersonic Research Hanson, R. K. KLUWER ACADEMIC PUBL. 1993: 185–194

  View details for Web of Science ID A1993BC72S00016

• Plume characteristics of an arcjet thruster 29th Joint Propulsion Conference and Exhibit Liebeskind, J. G., Hanson, R. K., Cappelli, M. A. 1993

  View details for DOI 10.2514/6.1993-2530

• Semiconductor laser absorption diagnostics of atomic oxygen for atmospheric-pressure plasmas 31st Aerospace Sciences Meeting Baer, D. S., Chang, H. A., Hanson, R. K. 1993

  View details for DOI 10.2514/6.1993-822

• Gas phase molecular mixing measurements using the acetone-biacetyl system 31st Aerospace Sciences Meeting Yip, B., Lozano, A., Hanson, R. K. 1993

  View details for DOI 10.2514/6.1993-221

• Planar laser-induced fluorescence temperature measurements in free jet flows with vibrational nonequilibrium 31st Aerospace Sciences Meeting Palmer, J. L., Hanson, R. K. 1993

  View details for DOI 10.2514/6.1993-46

• Planar imaging at high framing rates - System characterization and measurements. II 31st Aerospace Sciences Meeting Patrie, B. J., Seitzman, J. M., Hanson, R. K. 1993

  View details for DOI 10.2514/6.1993-364

• Two-line instantaneous temperature imaging of NO in a SCRAMJET model flowfield 31st Aerospace Sciences Meeting McMillin, B. K., Palmer, J. L., Seitzman, J. M., Hanson, R. K. 1993

  View details for DOI 10.2514/6.1993-44

• PLANAR IMAGING FOR 3-D FLOW VISUALIZATION 20TH INTERNATIONAL CONGRESS ON HIGH-SPEED PHOTOGRAPHY AND PHOTONICS PATRIE, B. J., Seitzman, J. M., Hanson, R. K. SPIE - INT SOC OPTICAL ENGINEERING. 1993: 889–900

  View details for Web of Science ID A1993BY61B00096

• Planar imaging for 3D flow visualization 20th International Congress on High Speed Photography and Photonics Patrie, B. J., Seitzman, J. M., Hanson, R. K. 1993

  View details for DOI 10.1117/12.145718

• An Experimental Study of the Structure of a Compressible, Reacting Mixing Layer 31st Aerospace Sciences Meeting Miller, M. F., Island, T. C., Yip, B., Bowman, C. T., Mungal, M. G., Hanson, R. K. 1993

  View details for DOI 10.2514/6.1993-354

• Semiconductor Laser Diagnostics of Atomic Oxygen for Hypersonic Flowfield Measurements 31st Aerospace Sciences Meeting Chang, H. A., Baer, D. S., Hanson, R. K. 1993

  View details for DOI 10.2514/6.1993-628

• A Shock Tube Study of the Reactions of CN and NCO with NO2 WSS/CI Fall meeting Woolridge, S., Hanson, R. K., Bowman, C. T. 1993
• Shock Tube Measurements of the Major Product Channels of N2O + O 18th International Symposium on Shock Waves Davidson, D. F., DiRosa, M. D., Chang, A. Y., Hanson, R. K. 1993
• Development and Application of a VUV Absorption Diagnostic for Shock Tube Kinetics Studies of C2H4 WSS/CI Fall meeting Zelson, L. S., Davidson, D. F., Hanson, R. K. 1993
• Flow and Particle Diagnostics. Multi-Parameter and Multi-Point Measurements Berichte der Bunsengesellschaft für physikalische Chemie Hanson, R. K., Baer, D. S., McMillin, B. J., Arroyo, P. 1993: 1548–1554

  View details for DOI 10.1002/bbpc.19930971209

• LIF Measurements of Species Velocities in an Arcjet Plume 23rd Int. Elec. Prop. Conf. Liebeskind, J. G., Hanson, R. K., Cappelli, M. A. 1993
• Temperature Measurements in Gases Using Planar Laser-Induced Fluorescence Imaging of NO Applied Optics Lee, M. P., McMillin, B. K., Hanson, R. K. 1993; 32 (27): 5379-5396

  View details for DOI 10.1364/AO.32.005379

• Semiconductor Laser Diagnostics of Atomic Oxygen in Atmospheric Pressure Plasmas Journal of Quantitative Spectroscopy and Radiative Transfer Baer, D. S., Chang, H. A., Hanson, R. K. 1993; 50 (6): 621-633

  View details for DOI 10.1016/0022-4073(93)90030-L

• Scalar Mixing in the Subsonic Jet in Crossflow AGARD 72nd Fluid Dynamics Meeting Smith, S. H., Lozano, A., Mungal, M. G., Hanson, R. K. 1993
• Single-Shot Velocimetry Using Planar Laser-Induced Fluorescence Imaging of Nitric Oxide 29th Joint Propulsion Conference and Exhibit Palmer, J. L., Hanson, R. K. 1993

  View details for DOI 10.2514/6.1993-2020

• A Direct Comparison of Arcjet Thruster Properties to Model Predictions 23rd Int. Elec. Prop. Conf. Cappelli, M. A., Liebeskind, J. G., Hanson, R. K., Butler, G. W., King, D. Q. 1993
• Development of a CW Laser Absorption Diagnostic for CN in Shock Tube Flows Journal of Quantitative Spectroscopy and Radiative Transfer Wooldridge, S. T., Hanson, R. K., Bowman, C. T. 1993; 50 (1): 19-34

  View details for DOI 10.1016/0022-4073(93)90125-2

• Temporally Resolved, Two-Line Fluorescence Imaging of NO Temperature in a Transverse Jet in a Supersonic Cross Flow Applied Optics McMillin, B. K., Palmer, J. L., Hanson, R. K. 1993; 32 (36): 7532-7545

  View details for DOI 10.1364/AO.32.007532

• Semiconductor laser-based measurements of quench rates in an atmospheric pressure plasma by using saturated-fluorescence spectroscopy Applied Optics Baer, D. S., Hanson, R. K. 1993; 32 (6): 948-955

  View details for DOI 10.1364/AO.32.000948

• Simultaneous OH and Acetone Fluorescence Imaging in Diffusion Flames Joint Meeting of Italian and Spanish Sections of the Combustion Instituto Lozano, A., Yip, B., Hanson, R. K. 1993
• Instantaneous Planar Thermometry of Shock-Heated Flows using PLIF of OH 31st Aerospace Sciences Meeting Seitzman, J. M., Palmer, J. L., Antonio, A. L., Hanson, R. K., DeBarber, P. A., Hess, C. F. 1993

  View details for DOI 10.2514/6.1993-802

• Quantitative LIF and PLIF Diagnostics invited paper at 3rd Int. Symp. on Special Topics in Chemical Propulsion: Nonintrusive Diagnostics Hanson, R. K. 1993
• FLUORESCENCE DIAGNOSTICS FOR ATMOSPHERIC-PRESSURE PLASMAS USING SEMICONDUCTOR-LASERS JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS Baer, D. S., Chang, H. A., Hanson, R. K. 1992; 9 (11): 1968-1978

  View details for Web of Science ID A1992JW72400004

• ACETONE - A TRACER FOR CONCENTRATION MEASUREMENTS IN GASEOUS FLOWS BY PLANAR LASER-INDUCED FLUORESCENCE EXPERIMENTS IN FLUIDS Lozano, A., Yip, B., Hanson, R. K. 1992; 13 (6): 369-376

  View details for Web of Science ID A1992JV71900002

• TUNABLE DIODE-LASER ABSORPTION DIAGNOSTICS FOR ATMOSPHERIC-PRESSURE PLASMAS JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Baer, D. S., Hanson, R. K. 1992; 47 (6): 455-475

  View details for Web of Science ID A1992JB78500002

• CH-ATOM AND C-ATOM TIME HISTORIES IN DILUTE HYDROCARBON PYROLYSIS - MEASUREMENTS AND KINETICS CALCULATIONS INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Dean, A. J., Hanson, R. K. 1992; 24 (6): 517-532

  View details for Web of Science ID A1992HU43300001

• DEGENERATE 4-WAVE-MIXING TEMPERATURE-MEASUREMENTS IN A FLAME OPTICS LETTERS Yip, B., Danehy, P. M., Hanson, R. K. 1992; 17 (10): 751-753

  Abstract

  Multiplex degenerate four-wave mixing is performed by using OH radicals in an atmospheric-pressure hydrogen-oxygen flame. The ratio of the signal intensities from two OH transitions simultaneously pumped by a single laser pulse is used to determine the local instantaneous flame temperature.

  View details for Web of Science ID A1992HT34400018

  View details for PubMedID 19794619

• TEMPERATURE-DEPENDENCE OF COLLISION BROADENING AND SHIFT IN THE NO A[-X (0,0) BAND IN THE PRESENCE OF ARGON AND NITROGEN JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Chang, A. Y., DIROSA, M. D., Hanson, R. K. 1992; 47 (5): 375-390

  View details for Web of Science ID A1992HZ28800008

• LASER-PHOTOLYSIS SHOCK-TUBE STUDIES OF RADICAL REACTIONS Hanson, R. K. AMER CHEMICAL SOC. 1992: 14-PHYS

  View details for Web of Science ID A1992HK16202110

• EMISSION AND LASER-INDUCED FLUORESCENCE MEASUREMENTS IN A SUPERSONIC JET OF PLASMA-HEATED NITROGEN JOURNAL OF PHYSICS D-APPLIED PHYSICS Cohen, L. M., Hanson, R. K. 1992; 25 (3): 339-351

  View details for Web of Science ID A1992HJ75000001

• A SHOCK-TUBE STUDY OF REACTIONS OF ATOMIC OXYGEN WITH ISOCYANIC ACID INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Mertens, J. D., Chang, A. Y., Hanson, R. K., Bowman, C. T. 1992; 24 (3): 279-295

  View details for Web of Science ID A1992HE02400005

• PLANAR LASER-INDUCED FLUORESCENCE IMAGING OF SHOCK-TUBE FLOWS WITH VIBRATIONAL NONEQUILIBRIUM 21ST CONF ON FLUID DYNAMICS, PLASMA DYNAMICS, AND LASERS MCMILLIN, B. K., Lee, M. P., Hanson, R. K. AMER INST AERONAUT ASTRONAUT. 1992: 436–43

  View details for Web of Science ID A1992HE96700020

• Hydroxyl Density Measurements in a Flame with Resonant Holographic Interferometry 30th Aerospace Sciences Meeting and Exhibit Trolinger, J. D., Hess, C. F., Yip, B., Battles, B., Hanson, R. K., 1992

  View details for DOI 10.2514/6.1992-582

• CW laser strategies for simultaneous, multi-parameter measurements in high-speed gas flows 28th Joint Propulsion Conference and Exhibit DiRosa, M. D., Phillippe, L. C., Arroyo, M. P., Hanson, R. K. 1992

  View details for DOI 10.2514/6.1992-3955

• Instantaneous, two-line temperature imaging of a H2/NO jet in supersonic crossflow 28th Joint Propulsion Conference and Exhibit McMillin, B. K., Palmer, J. L., Antonio, A. L., Hanson, R. K. 1992

  View details for DOI 10.2514/6.1992-3347

• Fluorescence diagnostics for atmospheric pressure plasmas using tunable diode lasers 30th Aerospace Sciences Meeting and Exhibit Baer, D. S., Chang, H. A., Hanson, R. K. 1992

  View details for DOI 10.2514/6.1992-679

• Flow diagnostics of an arcjet using laser-induced fluorescence 28th Joint Propulsion Conference and Exhibit Liebeskind, J. G., Hanson, R. K., Cappelli, M. A. 1992

  View details for DOI 10.2514/6.1992-3243

• Quantitative fluorescence imaging - A comparison of linear, predissociative and saturated pumping techniques 30th Aerospace Sciences Meeting and Exhibit Seitzman, J. M., Hanson, R. K. 1992

  View details for DOI 10.2514/6.1992-879

• Planar imaging at high framing rates - System characterization and measurements 30th Aerospace Sciences Meeting and Exhibit Patrie, B. J., Seitzman, J. M., Hanson, R. K. 1992

  View details for DOI 10.2514/6.1992-584

• PLANAR FLUORESCENCE IMAGING - BASIC CONCEPTS FOR SCALAR AND VELOCITY-MEASUREMENTS NATO ADVANCED STUDY INST ON COMBUSTING FLOW DIAGNOSTICS Seitzman, J. M., Hanson, R. K. KLUWER ACADEMIC PUBL. 1992: 137–157

  View details for Web of Science ID A1992BU93L00005

• Planar laser-induced fluorescence imaging of velocity and temperature in shock tunnel free jet flow 30th Aerospace Sciences Meeting and Exhibit Palmer, J. L., McMillin, B. K., Hanson, R. K. 1992

  View details for DOI 10.2514/6.1992-762

• Laser-induced fluorescence of atomic hydrogen in an arcjet thruster 30th Aerospace Sciences Meeting and Exhibit Liebeskind, J. G., Hanson, R. K., Cappelli, M. A. 1992

  View details for DOI 10.2514/6.1992-678

• Sensitive Diode Laser Absorption Technique for Aerodynamic Measurements 30th Aerospace Sciences Meeting and Exhibit Philippe, L. C., Hanson, R. K. 1992

  View details for DOI 10.2514/6.1992-139

• Planar Laser-Induced Fluorescence Measurements of High-Enthalpy Free Jet Flow with Nitric Oxide NASA Measurement Technology Conf., NASA Langley Res. Ctr. Palmer, J. L., McMillin, B. K., Hanson, R. K. 1992
• Tunable Diode Laser Absorption Technique for Detection of Water Vapor in Aerodynamic Flows 30th Aerospace Sciences Meeting and Exhibit Arroyo, M. P., Hanson, R. K. 1992

  View details for DOI 10.2514/6.1992-510

• Two-Dimensional Imaging of Shock Tube flows Using Planar Laser-Induced Fluorescence 18th Shock Tube Symposium McMillin, B. K., Lee, M. P., Palmer, J. L., Hanson, R. K. 1992
• Quantitative Fluorescence Measurements of the OH Radical in High Pressure Methane Flames 23rd Plasmadynamics and Lasers Conference Battles, B. E., Hanson, R. K. 1992

  View details for DOI 10.2514/6.1992-2960

• Semiconductor Laser-Based Measurements of Quench Rates in an Atmospheric Pressure Plasma using Saturated-Fluorescence Spectroscopy 23rd Plasmadynamics and Lasers Conference Baer, D. S., Chang, H. A., Hanson, R. K. 1992

  View details for DOI 10.2514/6.1992-2961

• Planar fluorescence imaging of a transverse jet in a supersonic crossflow Journal of Propulsion and Power Lee, M. P., McMillin, B. K., Palmer, J. L., Hanson, R. K. 1992; 8 (4): 729-735

  View details for DOI 10.2514/3.23542

• Shedding New Light on Gas Dynamics Aerospace America McKenzie, R. L., Hanson, R. K., Eckbreth, A. C. 1992: 20-25
• Instantaneous Imaging of Particle Size and Spatial Distribution in Two-Phase Flows Applied Optics Hofeldt, D. L., Hanson, R. K. 1992; 30 (33): 4936-4948

  View details for DOI 10.1364/AO.30.004936

• Tunable Diode Laser Absorption Technique for Multi-Parameter Measurements of Combustion Flows 6th Int. Symp. on Applications of Laser Techniques to Fluid Mechanics Arroyo, M. P., Hanson, R. K. 1992
• Diode Laser Absorption Technique for Monitoring Mass Flux in High Speed Airflows NASP Mid-Term Technology Review Hanson, R. K., Philippe, L. C. 1992
• LASER-ABSORPTION MASS FLUX SENSOR FOR HIGH-SPEED AIR-FLOWS OPTICS LETTERS PHILIPPE, L. C., Hanson, R. K. 1991; 16 (24): 2002-2004

  Abstract

  We present a laser-based concept for an air mass flux sensor based on the simultaneous measurement of density and velocity of O(2). The sensor uses wavelength modulation absorption spectroscopy at 10 MHz of an AlGaAs laser diode in the b(1)Sigma(g)(+)(v' = 0)-X(3)Sigma(g)(-)(v'' = 0) system of O(2), combined with second-harmonic detection. The apparatus is demonstrated on a high-speed oxygen flow generated behind the incident shock wave in a shock tube. The measurement time is 0.5 ms for typical absorption levels of 0.5%.

  View details for Web of Science ID A1991GY73100031

  View details for PubMedID 19784209

• SHOCK-TUBE MEASUREMENTS OF THE REACTIONS OF CN WITH O AND O2 INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Davidson, D. F., Dean, A. J., DIROSA, M. D., Hanson, R. K. 1991; 23 (11): 1035-1050

  View details for Web of Science ID A1991GK69400006

• RAPID TUNING CW LASER TECHNIQUE FOR MEASUREMENTS OF GAS VELOCITY, TEMPERATURE, PRESSURE, DENSITY, AND MASS FLUX USING NO APPLIED OPTICS Chang, A. Y., DIROSA, M. D., Davidson, D. F., Hanson, R. K. 1991; 30 (21): 3011-3022

  Abstract

  An intracavity-doubled rapid-tuning cw ring dye laser was used to acquire fully resolved absorption profiles of NO line pairs in the A ? X band at 225 nm at a rate of 4 kHz. These profiles were utilized for simultaneous measurements of flow parameters in the high speed 1-D flows generated in a shock tube. Velocity was determined from the Doppler shift measured using a pair of profiles simultaneously acquired at different angles with respect to the flow direction. Temperature was determined from the intensity ratio of the adjacent lines. Pressure and density were found both from the collisional broadening and the fractional absorption. From this information the mass flux was determined. The results compare well to 1-D shock calculations.

  View details for Web of Science ID A1991FX92000020

  View details for PubMedID 20706349

• CONTINUOUS WAVE LASER-ABSORPTION TECHNIQUES FOR GASDYNAMIC MEASUREMENTS IN SUPERSONIC FLOWS APPLIED OPTICS Davidson, D. F., Chang, A. Y., DIROSA, M. D., Hanson, R. K. 1991; 30 (18): 2598-2608

  Abstract

  Line-of-sight measurements of velocity, temperature, pressure, density, and mass flux were performed in a transient shock tube flow using three laser absorption schemes. All methods employed an intracavity-doubled ring dye laser tuned to an OH transition in the A(2) summation operator(+) ? X(2)II (0,0) band at 306 nm. In the first scheme, the gas was labeled by 193.3-nm excimer photolysis of H(2)O, and the passage of the generated OH was detected downstream. In the second method, the laser was tuned at a rate of 3 kH(z) over the R(1)(7) and R(1)(11) line pair, and absorption was simultaneously monitored at 90 and 60 degrees with respect to the flow. Velocity was determined from the Doppler shift of the profiles and the temperature from the intensity ratio of the lines. Pressure was determined from both the magnitude of absorption and the collisional broadening. In the third method, the laser wavelength was fixed at a single frequency, and a continuous measurement of velocity and pressure was obtained using the signals from the two beam paths. All methods gave results which compare favorably to calculated values.

  View details for Web of Science ID A1991FR74000028

  View details for PubMedID 20700249

• A SHOCK-TUBE STUDY OF REACTIONS OF C ATOMS AND CH WITH NO INCLUDING PRODUCT CHANNEL MEASUREMENTS JOURNAL OF PHYSICAL CHEMISTRY Dean, A. J., Hanson, R. K., Bowman, C. T. 1991; 95 (8): 3180-3189

  View details for Web of Science ID A1991FH09800042

• 3-DIMENSIONAL VISUALIZATION OF TEMPORAL FLOW SEQUENCES AIAA JOURNAL VANCRUYNINGEN, I., Lozano, A., Mungal, M. G., Hanson, R. K. 1991; 29 (3): 479-482

  View details for Web of Science ID A1991FE87300025

• A SHOCK-TUBE STUDY OF THE REACTIONS OF NH WITH NO, O2, AND O INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Mertens, J. D., Chang, A. Y., Hanson, R. K., Bowman, C. T. 1991; 23 (2): 173-196

  View details for Web of Science ID A1991EV72600007

• Instantaneous 3-D and Temporal Evolution Measurements by Rapid Acquisition of Planar Images 29th Aerospace Sciences Meeting Seitzman, J. M., Paul, P. H., Patrie, B., Hanson, R. K. 1991

  View details for DOI 10.2514/6.1991-178

• Two-dimensional temperature measurements of shock-tube flows using PLIF of nitric oxide 22nd Fluid Dynamics, Plasma Dynamics and Lasers Conference McMillin, B. K., Palmer, J. L., Hanson, R. K. 1991

  View details for DOI 10.2514/6.1991-1670

• Scalar mixing in the supersonic shear layer 22nd Fluid Dynamics, Plasma Dynamics and Lasers Conference Clemens, N. T., Paul, P. H., Mungal, M. G., Hanson, R. K. 1991

  View details for DOI 10.2514/6.1991-1720

• Velocity measurements in a hydrogen arcjet using LIF AIAA/SAE/ASME/ASEE 27th Joint Propulsion Conference Liebeskind, J. G., Hanson, R. K., Cappelli, M. A. 1991

  View details for DOI 10.2514/6.1991-2112

• CW laser strategies for multi-parameter measurements of high-speed flows containing either NO or O2 29th Aerospace Sciences Meeting DiRosa, M. D., Chang, A. Y., Davidson, D. F., Hanson, R. K. 1991

  View details for DOI 10.2514/6.1991-359

• RECENT DEVELOPMENTS IN LASER DIAGNOSTICS AT THE STANFORD HIGH-TEMPERATURE GASDYNAMICS LABORATORY SYMP ON OPTICAL METHODS IN FLOW AND PARTICLES DIAGNOSTICS ( ICALEO 90 ) Seitzman, J. M., VANCRUYNINGEN, I., Hanson, R. K. LASER INST AMERICA. 1991: 28–38

  View details for Web of Science ID A1991BU07Y00004

• A shock tube study of reactions of carbon atoms with hydrogen and oxygen using excimer photolysis of C3O2 and carbon atom atomic resonance absorption spectroscopy Journal of Physical Chemistry Dean, A. J., Davidson, D. F., Hanson, R. K. 1991; 95 (1): 183-191

  View details for DOI 10.1021/j100154a037

• Development of a cw Laser Absorption Diagnostics for CH3 WSS/CI Spring Meeting Davidson, D. F., Chang, A. Y., DiRosa, M. D., Hanson, R. K. 1991
• Tunable Diode Laser Sensor for Temperature and Velocity Measurements of Oxygen Optcon '91 Philippe, L. C., Hanson, R. K. 1991
• High Temperature Reaction Kinetics of the Methyl Radical WSS/CI meeting Davidson, D. F., DiRosa, M. D., Chang, A. Y., Hanson, R. K., Bowman, C. T. 1991
• Optical Diagnostics of a Low Power Hydrogen Arcjet 22nd Int. Electric Propulsion Conf. Cappelli, M. A., Hanson, R. K., Liebeskind, J. G., Manzella, D. H. 1991
• A Shock Tube Study of H + HNCO -> NH2 + CO International Journal of Chemical Kinetics Mertens, J. D., Kohse-Höinghaus, K., Hanson, R. K., Bowman, C. T. 1991; 23 (8): 655-668

  View details for DOI 10.1002/kin.550230802

• Two-Dimensional Imaging of Combustion Phenomena in a Shock Tube using Planar Laser-Induced Fluorescence 29th Aerospace Sciences Meeting Lee, M. P., McMillin, B. K., Palmer, J. L., Hanson, R. K. 1991

  View details for DOI 10.2514/6.1991-460

• Tunable Diode Laser Absorption Sensor for Temperature and Velocity Measurements of O2 in Air Flows 29th Aerospace Sciences Meeting Philippe, L. C., Hanson, R. K. 1991

  View details for DOI 10.2514/6.1991-360

• High Temperature Reaction Kinetics Relevant to Nitramine Combustion JANNAF Combustion Meeting Hanson, R. K., Bowman, C. T., Davidson, D. F. 1991
• CW Laser Strategy of Probing NO at 220 nm for Flow Measurements Optcon '91 DiRosa, M. D., Hanson, R. K. 1991
• Laser-Based Measurements of OH in High Pressure CH4/Air Flames 22nd Fluid Dynamics, Plasma Dynamics and Lasers Conference Battles, B. E., Hanson, R. K. 1991

  View details for DOI 10.2514/6.1991-1494

• Tunable Diode Laser Diagnostics for Atmospheric Pressure Plasmas 22nd Fluid Dynamics, Plasma Dynamics and Lasers Conference Baer, D. S., Philippe, L., Hanson, R. K. 1991

  View details for DOI 10.2514/6.1991-1495

• HIGH-TEMPERATURE REACTION-RATE COEFFICIENTS DERIVED FROM N-ATOM ARAS MEASUREMENTS AND EXCIMER PHOTOLYSIS OF NO INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Davidson, D. F., Hanson, R. K. 1990; 22 (8): 843-861

  View details for Web of Science ID A1990DQ56000004

• IMAGE-INTENSIFIED PHOTODIODE ARRAY AS A FLUORESCENCE DETECTOR IN CW-LASER EXPERIMENTS REVIEW OF SCIENTIFIC INSTRUMENTS HILLER, B., Paul, P. H., Hanson, R. K. 1990; 61 (7): 1808-1815

  View details for Web of Science ID A1990DL98800002

• SIMULTANEOUS MEASUREMENTS OF VELOCITY, TEMPERATURE, AND PRESSURE USING RAPID-CW WAVELENGTH-MODULATION LASER-INDUCED FLUORESCENCE OF OH OPTICS LETTERS Chang, A. Y., BATTLES, B. E., Hanson, R. K. 1990; 15 (12): 706-708

  Abstract

  The beam from a rapid-tuning single-frequency laser was used to probe the R(1)(7) and R(1)(11) A(2)Sigma(+) ? X(2)II (0, 0) line pair of OH at a 45 degrees incident angle in a combustion-driven, supersonic free jet. Absorption line shapes were recorded in spatially resolved, single-point fluorescence. The Doppler shift, intensity ratio, and collisional broadening of the measured line pair were used to determine velocity, temperature, and pressure. The repetition rate of the measurement was 3 kHz.

  View details for Web of Science ID A1990DH95400016

  View details for PubMedID 19768054

• PLANAR LASER-FLUORESCENCE IMAGING OF COMBUSTION GASES APPLIED PHYSICS B-PHOTOPHYSICS AND LASER CHEMISTRY Hanson, R. K., Seitzman, J. M., Paul, P. H. 1990; 50 (6): 441-454

  View details for Web of Science ID A1990DG36700002

• A PYROLYSIS MECHANISM FOR AMMONIA INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Davidson, D. F., KOHSEHOINGHAUS, K., Chang, A. Y., Hanson, R. K. 1990; 22 (5): 513-535

  View details for Web of Science ID A1990DB09500007

• LASER-INDUCED FLUORESCENCE IMAGING OF LASER-ABLATED BARIUM APPLIED PHYSICS LETTERS Cappelli, M. A., Paul, P. H., Hanson, R. K. 1990; 56 (18): 1715-1718

  View details for Web of Science ID A1990DB07100001

• QUANTITATIVE IMAGING OF CONCENTRATION BY PLANAR LASER-INDUCED FLUORESCENCE EXPERIMENTS IN FLUIDS VANCRUYNINGEN, I., Lozano, A., Hanson, R. K. 1990; 10 (1): 41-49

  View details for Web of Science ID A1990EE08500006

• Applications of planar laser-induced fluorescence imaging diagnostics to reacting flows 26th Joint Propulsion Conference Paul, P. H., Hanson, R. K. 1990

  View details for DOI 10.2514/6.1990-1848

• PLIF imaging and analysis of OH structures in a turbulent nonpremixed H2-air flame 28th Aerospace Sciences Meeting Seitzman, J. M., Ungut, A., Paul, P. H., Hanson, R. K. 1990

  View details for DOI 10.2514/6.1990-160

• Planar laser-induced fluorescence imaging of nitric oxide in shock tube flows with vibrational nonequilibrium 21st Fluid Dynamics, Plasma Dynamics and Lasers Conference McMillin, B. K., Lee, M. P., Hanson, R. K. 1990

  View details for DOI 10.2514/6.1990-1519

• SHOCK-TUBE EXCIMER PHOTOLYSIS AND THE MEASUREMENT OF N ATOM KINETIC RATES 17TH INTERNATIONAL SYMP ON SHOCK WAVES AND SHOCK TUBES Davidson, D. F., Snell, D. C., Hanson, R. K. AIP PRESS. 1990: 525–530

  View details for Web of Science ID A1990BR87S00079

• PROPERTIES OF THE IODINE MOLECULE RELEVANT TO LASER-INDUCED FLUORESCENCE EXPERIMENTS IN GAS-FLOWS EXPERIMENTS IN FLUIDS HILLER, B., Hanson, R. K. 1990; 10 (1): 1-11

  View details for Web of Science ID A1990EE08500001

• C-ATOM ARAS DIAGNOSTIC FOR SHOCK-TUBE KINETICS STUDIES 17TH INTERNATIONAL SYMP ON SHOCK WAVES AND SHOCK TUBES Dean, A. J., Davidson, D. F., Hanson, R. K. AIP PRESS. 1990: 537–542

  View details for Web of Science ID A1990BR87S00081

• HIGH-RESOLUTION DIGITAL FLOWFIELD IMAGING OF JETS EXPERIMENTS IN FLUIDS Paul, P. H., VANCRUYNINGEN, I., Hanson, R. K., KYCHAKOFF, G. 1990; 9 (5): 241-251

  View details for Web of Science ID A1990DN28400001

• Shock Tube Study of the Reaction H + O2 -> OH + O Using OH Laser Absorption Journal of Physical Chemistry Masten, D. A., Hanson, R. K., Bowman, C. T. 1990; 94 (18): 7119-7128

  View details for DOI 10.1021/j100381a033

• Medidas De Concentraciones en un Jet Turbulento Mediante Fluorescencia Planar Inducida Por Laser 9th Congreso Nacional de Ingeniera Mecanica Lozano, A., van Cruyningen, I., Danehy, P., Hanson, R. K. 1990
• Laser-Induced Fluorescence Diagnostics for Supersonic Flows Laser Applications to Chemical Analysis Seitzman, J. M., Hanson, R. K., Paul, P. H., Lee, M. P. 1990
• Recent Developments in Laser Diagnostics at Stanford's High Temperature Gasdynamics Lab ICALEO '90 Seitzman, J. M., Hanson, R. K. 1990
• A Direct Comparison of Shock Tube Photolysis and Pyrolysis Methods in the Determination of the Rate Coefficient for O + H2 -> OH + H Combustion and Flame Davidson, D. F., Hanson, R. K. 1990; 82: 445-447

  View details for DOI 10.1016/0010-2180(90)90014-I

• Laser-Induced Fluorescence Diagnostics for Supersonic Flows 28th Aerospace Sciences Meeting Hanson, R. K., Chang, A. Y., Seitzman, J. M., Lee, M. P., Paul, P. H., Battles, B. E. 1990

  View details for DOI 10.2514/6.1990-625

• Computer Rendering of Planar Fluorescence Flowfield Images 28th Aerospace Sciences Meeting van Cruyningen, I. J., Lozano, A., Hanson, R. K. 1990

  View details for DOI 10.2514/6.1990-499

• Planar Laser-Induced Fluorescence Scalar Measurements in a Turbulent Jet 5th Int. Symp. on Applications of Laser Techniques to Fluid Mechanics Lozano, A., van Cruyingen, I., Hanson, R. K. 1990: 19–33

  View details for DOI 10.1007/978-3-642-61254-1_2

• REACTION-KINETICS OF NH IN THE SHOCK-TUBE PYROLYSIS OF HNCO INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Mertens, J. D., Chang, A. Y., Hanson, R. K., Bowman, C. T. 1989; 21 (11): 1049-1067

  View details for Web of Science ID A1989AV39800006

• DEVELOPMENT OF A LASER-ABSORPTION DIAGNOSTIC FOR SHOCK-TUBE STUDIES OF CH JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Dean, A. J., Hanson, R. K. 1989; 42 (5): 375-384

  View details for Web of Science ID A1989AX37500004

• MEASUREMENTS OF ABSORPTION LINESHAPES IN THE A3-PI-I]-X3-SIGMA-(0,0) BAND OF NH IN THE PRESENCE OF AR BROADENING JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Chang, A. Y., Hanson, R. K. 1989; 42 (3): 207-217

  View details for Web of Science ID A1989AJ15500004

• QUANTITATIVE NH2 CONCENTRATION DETERMINATION IN SHOCK-TUBE LASER-ABSORPTION EXPERIMENTS JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER KOHSEHOINGHAUS, K., Davidson, D. F., Chang, A. Y., Hanson, R. K. 1989; 42 (1): 1-17

  View details for Web of Science ID A1989AD80500001

• Study of NH3 Plasma/Titanium Surface Interaction: Measurement of NH Radical Production and Dissociation Kinetics by Laser Absorption Spectroscopy Int. Plasma Chemistry Conference (ILPC) Giquel, A., Cappelli, M. A., Chang, A. Y., Hanson, R. K. 1989
• Planar laser-induced fluorescence imaging in supersonic flows 27th Aerospace Sciences Meeting Paul, P. H., Seitzman, J. M., Lee, M. P., McMillin, B. K., Hanson, R. K. 1989

  View details for DOI 10.2514/6.1989-59

• Planar laser-induced fluorescence imaging of nitric oxide in a shocktube 25th Joint Propulsion Conference McMillin, B. K., Lee, M. P., Paul, P. H., Hanson, R. K. 1989

  View details for DOI 10.2514/6.1989-2566

• COLLISIONAL BROADENING OF THE ALPHA-2-SIGMA+[-X2-PI(0,0) BAND OF OH BY H2O AND CO2 IN ATMOSPHERIC-PRESSURE FLAMES JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Rea, E. C., Chang, A. Y., Hanson, R. K. 1989; 41 (1): 29-42

  View details for Web of Science ID A1989R777400005

• Structural OH Imaging in a Turbulent H2-Air Diffusion Flame 42nd annual meeting of the Fluid Dynamics Section of APS Paul, P. H., Seitzman, J. M., Ungut, A., Hanson, R. K. 1989
• Shock Tube Combustion Studies Using Optical Diagnostics and Excimer Photolysis AIChI Annual Meeting Davidson, D. F., Dean, A. J., Chang, A. Y., Hanson, R. K. 1989
• Planar Laser-Induced Fluorescence Imaging of NO in Supersonic Flows Fall WSS/CI Meeting Lee, M. P., Paul, P. H., McMillin, B. K., Hanson, R. K. 1989
• Quantitative Laser-Induced Fluorescence Imaging of Flowfields Electronic Imaging West '89 van Cruyningen, I., Lozano, A., Hanson, R. K. 1989
• Planar Laser-Induced Fluorescence Imaging of Shock-Heated Flows in Vibrational Nonequilibrium ASME Winter Meeting, Symp. of Flow Visualization McMillin, B. K., Lee, M. P., Palmer, J. L., Paul, P. H., Hanson, R. K. 1989
• Molecular Velocity Imaging of Supersonic Flows Using Pulsed Planar-Induced Fluorescence of NO Optics Letters Paul, P. H., Lee, M. P., Hanson, R. K. 1989; 14 (9): 417-419

  View details for DOI 10.1364/OL.14.000417

• Interpretation of Planar Laser-Induced Fluorescence Flowfield Images ASME Winter Meeting, Symp. of Flow Visualization van Cruyningen, I., Lozano, A., Hanson, R. K. 1989
• Interpretation of Planar Laser-Induced Fluorescence Flowfield Images International Turbulent Shear Flow Conference, Stanford, CA van Cruyningen, I., Lozano, A., Hanson, R. K. 1989
• PLIF Imaging in Supersonic Flows Using Planar Laser-Induced Fluorescence Advances in Laser Science - IV Paul, P. H., Seitzman, J. M., Lee, M. P., McMillin, B., Hanson, R. K. Optical Science and Engineering Series Am Inst. Physics, NY. 1989: 744

  View details for DOI 10.1063/1.38573

• Planar Fluorescence Imaging in Gases Handbook of Flow Visualization Hanson, R. K., Seitzman, J. M. edited by Yang, W. J. Hemisphere Pub. Corp.. 1989: 219–132
• Motional Narrowing in Spectral Lines of OH Fall WSS/CI Meeting Rea Jr, E. C., Chang, A. Y., Hanson, R. K. 1989
• High Temperature Absorption Coefficients of O2, NH3 and H2O for Broadband ArF Excimer Laser Radiation Journal of Quantitative Spectroscopy and Radiative Transfer Davidson, D. F., Chang, A. Y., Kohse-Höinghaus, K., Hanson, R. K. 1989; 42 (4): 267-278

  View details for DOI 10.1016/0022-4073(89)90073-3

• Structural Characterization of a Turbulent Nonpremixed Hydrogen-Air Flame with PLIF of OH Fall WSS/CI Meeting Seitzman, J. M., Ungut, A., Paul, P. H., Hanson, R. K. 1989
• Quantitative Two-Dimensional Imaging of CO in Combustion Gases Using LIF Instrumentation for Combustion and Flow in Engines Haumann, J., Seitzman, J. R. edited by Hanson, R. K., Durão, D. F., Whitelaw, J. H., Witze, P. O. 1989: 141–150

  View details for DOI 10.1007/978-94-009-2241-9_7

• Planar Laser-Induced Fluorescence Imaging in Supersonic Flows 25th Joint Propulsion Conference Paul, P. H., Lee, M., Palmer, J., Hanson, R. K. 1989

  View details for DOI 10.2514/6.1989-2912

• 2-D Velocity Measurements in Supersonic Flow Using Pulsed Planar Laser-Induced Fluorescence ASME Winter Meeting, Symp. of Flow Visualization Lee, M. P., Paul, P. H., Hanson, R. K. 1989
• Volume Rendering of 2-D and 3-D Flowfield Image Data 42nd annual meeting of the Fluid Dynamics Section of APS Lozano, A., van Cruyningen, I., Mungal, M. G., Hanson, R. K. 1989
• Imaging of Laser Produced Plasmas Using Planar Laser-Induced Fluorescence Int. Laser Science Conference, ILS Paul, P. H., Cappelli, M. A., Hanson, R. K. 1989
• Quantitative Planar Laser-Induced Fluorescence Imaging of Turbulent Jets 42nd annual meeting of the Fluid Dynamics Section of APS van Cruyningen, I., Lozano, A., Hanson, R. K. 1989
• RAPID LASER-WAVELENGTH MODULATION SPECTROSCOPY USED AS A FAST TEMPERATURE-MEASUREMENT TECHNIQUE IN HYDROCARBON COMBUSTION APPLIED OPTICS Rea, E. C., Hanson, R. K. 1988; 27 (21): 4454-4464

  Abstract

  A fast temperature measurement technique is described which is suitable for use in dynamic reacting gases, particularly in situations which involve hydrocarbon-air combustion. Temperature is determined from the relative intensity of a pair of fully resolved absorption lines probed with a rapid-tuning single-frequency laser. Demonstration of the technique using 300-micros scans across the R(1) (7) and R(1)(11) lines in the (0, 0) band of the A(2)Sigma(+) ? X(2)II system of OH present in the postflame gases above a CH(4)-air flat-flame burner is reported. Fluorescence monitoring of the absorption spectra was used to provide improved spatial resolution. Temperatures inferred from simultaneous absorption and fluorescence measurements showed good agreement with radiation-corrected thermocouple scans.

  View details for Web of Science ID A1988Q889000026

  View details for PubMedID 20539592

• PLANAR LASER-INDUCED FLUORESCENCE IMAGING JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Hanson, R. K. 1988; 40 (3): 343-?

  View details for Web of Science ID A1988Q887800017

• Digital Imaging of Laser-Ignited Combustion 23rd Thermophysics, Plasmadynamics and Lasers Conference Seitzman, J. M., Paul, P. H., Hanson, R. K. 1988

  View details for DOI 10.2514/6.1988-2775

• SIMULTANEOUS PLANAR MEASUREMENTS OF VELOCITY AND PRESSURE FIELDS IN GAS-FLOWS USING LASER-INDUCED FLUORESCENCE APPLIED OPTICS HILLER, B., Hanson, R. K. 1988; 27 (1): 33-48

  Abstract

  The development of a nonintrusive spectroscopic technique is reported which permits simultaneous spatially resolved measurements of two velocity components and pressure in a plane of a compressible gaseous flow field. The technique is based on the detection of fluorescence from an absorption line excited with a narrowbandwidth laser. Doppler shift and pressure broadening of the line are exploited to extract velocity and pressure information, respectively. The fluorescence is detected at a 90 degrees angle with an image-intensified 100 x 100 element photodiode-array camera which is interfaced with a laboratory computer. Results of the implementation in a Mach 1.5 underexpanded supersonic jet are presented.

  View details for Web of Science ID A1988L788900015

  View details for PubMedID 20523544

• Planar laser-induced fluorescence imaging in supersonic flows 5th International Congress on Applications of Lasers & Electro-Optics Paul, P. H., Seitzman, J. M., Cohen, L. M., McMillin, B. K., Hanson, R. K. 1988
• Planar Laser-Based Fluorescence Imaging of Flowfield Scalars 5th International Congress on Applications of Lasers & Electro-Optics Hanson, R. K. 1988
• Laser-Based Spectroscopic Measurements in High Temperature Gases invited paper presented at Annual Meeting of the Optical Society of America Hanson, R. K. 1988
• Decomposition Kinetics of HNCO at High Temperatures Western States Section/The Combustion Institute Mertens, J. D., Chang, A. Y., Hanson, R. K., Bowman, C. T. 1988
• Digital Fluorescence Imaging of Gaseous Flows Materials Research Society Symposium Hanson, R. K., Paul, P. H., Seitzman, J. M. 1988

  View details for DOI 10.1557/PROC-117-227

• Visualization Methods for the Study of Unsteady Non-Premixed Flame Structure Combustion Science and Technology Vandsburger, U., Seitzman, J. M., Hanson, R. K. 1988; 56 (4-6): 455-461

  View details for DOI 10.1080/00102208808947111

• Decomposition Kinetics of HNCO at High Temperatures poster paper presented at 22nd Symposium (International) on Combustion Paul, P. H., Seitzman, J. M., Lee, M. P., McMillin, B. K., Hanson, R. K. 1988
• Applications of PLIF Imaging to Supersonic Flows 54th National Aero-Space Plane Symposium, NASA Langley Res. Ctr. Hanson, R. K. 1988
• Laser-Based Fluorescence Imaging of Gaseous Flows 7th International Congress on Applications of Lasers and Electro-optics Hanson, R. K. 1988
• Development and Application of CH Laser Absorption Diagnostic for Shock Tube Kinetic Studies Western States Section/The Combustion Institute Dean, A. J., Davidson, D. F., Hanson, R. K. 1988
• Quantitative NH2 Laser-Absorption Diagnostic for Shock Tube Kinetics Studies spring meeting, Western States Section/The Combustion Institute Kohse-Höinghaus, K., Davidson, D. F., Hanson, R. K. 1988
• Plasma Diagnostics Using PLIF and Wavelength Modulation Spectroscopy 42nd Gaseous Electronics Conference Baer, D. S., Chang, A. Y., Paul, P. H., Hanson, R. K. 1988
• Modern Shock Tube Methods for Chemical Studies in High Temperature Gases 23rd Thermophysics, Plasmadynamics and Lasers Conference Hanson, R. K., Chang, A. Y., Davidson, D. F. 1988

  View details for DOI 10.2514/6.1988-2712

• CH Diagnostic for Shock Tube Kinetic Studies Using Laser Absorption at 431 nm poster paper presented at 22nd Symposium (International) on Combustion Dean, A. J., Davidson, D. F., Hanson, R. K. 1988
• Radial Distribution Measurement of SiH in a Low Pressure Silane Plasma Plasma Chemistry and Plasma Processing Asano, Y., Baer, D. S., Hernberg, R., Hanson, R. K. 1988; 8 (1): 1-8

  View details for DOI 10.1007/BF01016926

• Laser-Based Diagnostics for Gaseous Flows invited paper presented at workshop on Diagnostics for Ground-Based NASP Testing Hanson, R. K. 1988
• SUBSTRATE-TEMPERATURE DEPENDENCE OF SIH CONCENTRATION IN SILANE PLASMAS FOR AMORPHOUS-SILICON FILM DEPOSITION JOURNAL OF NON-CRYSTALLINE SOLIDS Asano, Y., Baer, D. S., Hanson, R. K. 1987; 94 (1): 5-10

  View details for Web of Science ID A1987L097200002

• QUANTITATIVE 2-PHOTON LIF IMAGING OF CARBON-MONOXIDE IN COMBUSTION GASES APPLIED OPTICS Seitzman, J. M., Haumann, J., Hanson, R. K. 1987; 26 (14): 2892-2899

  Abstract

  Two-dimensional imaging of CO concentration in combustion gases is demonstrated using two-photonexcited planar laser-induced fluorescence. A quantitative model is presented for the simultaneous twophoton excitation of several rotational transitions of the B(1)Sigma(+) ? X(1)Sigma(+) system and the subsequent visible fluorescence (B(1)Sigma(+) ? A(1)Pi). The model is verified by comparison of predicted and measured excitation spectra and of temperature-corrected relative fluorescence measurements to standard probe measurements of the center line CO distribution in a CO-air diffusion flame. In addition, CO imaging experiments in a premixed methane-air flame indicate the production of C(2) by laser photodissociation of acetylene.

  View details for Web of Science ID A1987J172300036

  View details for PubMedID 20489978

• MOVIES AND 3-D IMAGES OF FLOWFIELDS USING PLANAR LASER-INDUCED FLUORESCENCE APPLIED OPTICS KYCHAKOFF, G., Paul, P. H., VANCRUYNINGEN, I., Hanson, R. K. 1987; 26 (13): 2498-2500

  View details for Web of Science ID A1987J082800002

  View details for PubMedID 20489901

• TEMPERATURE-MEASUREMENTS IN SHOCK-TUBES USING A LASER-BASED ABSORPTION TECHNIQUE APPLIED OPTICS Chang, A. Y., Rea, E. C., Hanson, R. K. 1987; 26 (5): 885-891

  Abstract

  A laser-based technique for monitoring temperature in shock tube flows is reported. The method employs a rapid-tuning ring-dye laser to record the fully resolved absorption spectrum of the R(1)(7) and R(1)(11) lines of OH near 306.5 nm. The temperature is inferred from the ratio of the peak absorption coefficients of the two lines. Comparisons with calculated reflected shock temperatures show agreement within +/-3% for the 1300-3500 K range.

  View details for Web of Science ID A1987G661200027

  View details for PubMedID 20454237

• QUANTITATIVE IMAGING OF TEMPERATURE-FIELDS IN AIR USING PLANAR LASER-INDUCED FLUORESCENCE OF O-2 OPTICS LETTERS Lee, M. P., Paul, P. H., Hanson, R. K. 1987; 12 (2): 75-77

  Abstract

  Planar laser-induced fluorescence of O(2) has been used to acquire quantitative, instantaneous two-dimensional images of temperature in heated air flows. O(2) is excited by using a broadband ArF excimer laser at 193 nm, and the resultant fluorescence signal is converted to temperature by using a theoretical calculation of the dependence of the fluorescence on temperature. This calculation has been confirmed experimentally, and validating data are presented.

  View details for Web of Science ID A1987F829900003

  View details for PubMedID 19738797

• SHOCK-TUBE STUDY OF PRESSURE BROADENING OF THE A2-SIGMA+-X2-PI(0,0) BAND OF OH BY AR AND N-2 JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Rea, E. C., Chang, A. Y., Hanson, R. K. 1987; 37 (2): 117-127

  View details for Web of Science ID A1987F973700003

• Simultaneous Measurements of Velocity and Pressure Fields in Subsonic and Supersonic Flows through Image-Intensified Detection of Laser-Induced Fluorescence Flow Visualization IV Hiller, B., Cohen, L., Hanson, R. K. Hemisphere Pub. Corp.. 1987: 173–178
• LASER-INDUCED FLUORESCENCE MODULATION TECHNIQUES FOR VELOCITY-MEASUREMENTS IN GAS-FLOWS EXPERIMENTS IN FLUIDS Hassa, C., Paul, P. H., Hanson, R. K. 1987; 5 (4): 240-246

  View details for Web of Science ID A1987H200200004

• Two-Dimensional Imaging Measurements in Supersonic Flows Using Laser-Induced Fluorescence of Oxygen 22nd Thermophysics Conference Cohen, L. M., Lee, M. P., Paul, P. H., Hanson, R. K. 1987

  View details for DOI 10.2514/6.1987-1527

• Turbulent Flowfield Interpretation Through Processing of PLIF Images fall meeting of Western States Section/The Combustion Institute van Cruyningen, I., Paul, P. H., Hanson, R. K. 1987
• Instantaneous Two-Dimensional Multiple Particle-Sizing Diagnostic 24th JANNAF Combustion Meeting Hofeldt, D. L., Allen, M. G., Hanson, R. K. 1987
• High-Resolution Planar Laser-Induced Fluorescence Imaging of Jets APS Fluid Dynamics Meeting Paul, P. H., van Cruyningen, I., Hanson, R. K. 1987
• Rapid-Tuning Laser Absorption Diagnostics for Shock Tube Flows presented at 16th International Symposium on Shock Tubes and Waves Rea Jr, E. C., Chang, A. Y., Hanson, R. K. VCH Publishers. 1987: 863–869
• Recent Advances in Digital Fluorescence Imaging of High Temperature Flowfields ASME-JSME Thermal Engineering Joint Conference Hanson, R. K., Allen, M. G., Lee, M. P., Paul, P. H. 1987
• Instantaneous Two-Dimensional Multiple Particle-Sizing Diagnostic 6th International Congress on Applications of Lasers and Electro-optics, ICALEO '87 Hofeldt, D. L., Allen, M. G., Hanson, R. K. 1987
• Two-Dimensional Detector Arrays and Their Applications to Imaging Diagnostics Topical Meeting on Laser Applications to Chemical Analysis Hanson, R. K. 1987
• PLANAR LASER-INDUCED-FLUORESCENCE MONITORING OF OH IN A SPRAY FLAME OPTICAL ENGINEERING Allen, M. G., Hanson, R. K. 1986; 25 (12): 1309-1311

  View details for Web of Science ID A1986F225600008

• 2-PHOTON DIGITAL IMAGING OF CO IN COMBUSTION FLOWS USING PLANAR LASER-INDUCED FLUORESCENCE OPTICS LETTERS Haumann, J., Seitzman, J. M., Hanson, R. K. 1986; 11 (12): 776-778

  Abstract

  Two-dimensional imaging of CO distributions in combustion gases is demonstrated using planar laser-induced fluorescence. The illumination technique is based on the combination of a nonlinear absorption scheme, in which two photons at 230.1 nm excite several rotational transitions of the B (1)Sigma(+) ? X(1)Sigma(+) system, and the use of an ultraviolet multipass cell for producing the laser sheet. The subsequent visible fluorescence (B(1)Sigma(+) ? A (1)Pi) is imaged onto an intensified two-dimensional photodiode array. Experimental results are presented for carbon monoxide-air and methane-air flames.

  View details for Web of Science ID A1986F211600007

  View details for PubMedID 19738756

• CALCULATIONS OF O2 ABSORPTION AND FLUORESCENCE AT ELEVATED-TEMPERATURES FOR A BROAD-BAND ARGON FLUORIDE LASER SOURCE AT 193 NM JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Lee, M. P., Hanson, R. K. 1986; 36 (5): 425-440

  View details for Web of Science ID A1986F441600002

• COMBUSTION-DRIVEN FLOW REACTOR STUDIES OF THERMAL DENOX REACTION-KINETICS COMBUSTION AND FLAME KIMBALLLINNE, M. A., Hanson, R. K. 1986; 64 (3): 337-351

  View details for Web of Science ID A1986C447500007

• DIGITAL IMAGING OF REACTION ZONES IN HYDROCARBON AIR FLAMES USING PLANAR LASER-INDUCED FLUORESCENCE OF CH AND C-2 OPTICS LETTERS Allen, M. G., Howe, R. D., Hanson, R. K. 1986; 11 (3): 126-128

  View details for Web of Science ID A1986A180500002

  View details for PubMedID 19730554

• FIBEROPTIC ABSORPTION FLUORESCENCE COMBUSTION DIAGNOSTICS COMBUSTION SCIENCE AND TECHNOLOGY KIMBALLLINNE, M. A., KYCHAKOFF, G., Hanson, R. K. 1986; 50 (4-6): 307-322

  View details for Web of Science ID A1986F823000008

• Simultaneous measurements of velocity and pressure fields in subsonic and supersonic flows through image-intensified detection of laser-induced fluorescence 24th Aerospace Sciences Meeting Hiller, B., Cohen, L. M., Hanson, R. K. 1986

  View details for DOI 10.2514/6.1986-161

• Flame-Flow Structure in an Acoustically Driven Jet Flame fall meeting of Western States Section, The Combustion Institute Vandsburger, U., Lewis, G., Allen, M. G., Seitzman, J. M., Bowman, C. T., Hanson, R. K. 1986
• Digital Flowfield Imaging Physics and Engineering of Computerized Multidimensional Imaging and Processing Kychakoff, G., Hanson, R. K. 1986

  View details for DOI 10.1117/12.966680

• Multipoint Flow Diagnostics 5th International Congress on Applications of Lasers and Electro-optics Hanson, R. K. 1986
• Laser Fluorescence Imaging of O2 in Combustion Flows Using an ArF Laser Optics Letters Lee, M. P., Paul, P. H., Hanson, R. K. 1986; 11 (1): 7-9

  View details for DOI 10.1364/OL.11.000007

• High-Resolution and Three-Dimensional Digital Imaging of Jets fall meeting of Western States Section, The Combustion Institute Paul, P. H., Hanson, R. K. 1986
• Shock Tube Study of High Temperature Absorption Spectroscopy of CH at 431 nm 15th International Symposium on Shock Waves and Shock Tubes, Berkeley , also Shock Waves and Shock Tubes Louge, M. Y., Hanson, R. K. edited by Hanson, R. K. Stanford University Press. 1986: 827–831
• O- and N-Atom Measurements in High Temperature C2N2 + O Kinetics Combustion and Flame Roth, P., Louge, M. Y., Hanson, R. K. 1986; 64 (2): 167–176

  View details for DOI 10.1016/0010-2180(86)90053-2

• Effects of Fuel Spray Characteristics and Vaporization on Energy Release Rates and Flow Field Structure in a Dump Combustor 23rd JANNAF Combustion Meeting Bowman, C. T., Hanson, R. K., Vandsburger, U., Allen, M. G., McManus, K. R. 1986
• Simultaneous Imaging of Species Distributions in Two-Phase Reacting Flowfields Int. Laser Science Conference Allen, M. G., Hanson, R. K. 1986
• Digital Imaging in Spray Flames Western States Section/Combustion Institute Fall Meeting Allen, M. G., Hanson, R. K. 1985
• MODELING COAL PARTICLE BEHAVIOR UNDER SIMULTANEOUS DEVOLATILIZATION AND COMBUSTION COMBUSTION AND FLAME Choi, S., Kruger, C. H. 1985; 61 (2): 131-144

  View details for Web of Science ID A1985AMY8800003

• 2-FREQUENCY LASER-INDUCED FLUORESCENCE TECHNIQUE FOR RAPID VELOCITY-FIELD MEASUREMENTS IN GAS-FLOWS OPTICS LETTERS HILLER, B., Hanson, R. K. 1985; 10 (5): 206-208

  Abstract

  A technique is presented for measurements of two-dimensional velocity fields in gas flows. The single-mode frequency of an argon-ion laser is fixed in the wing of an absorption line of iodine molecules that are seeded at low level in the flow of interest. The emitted fluorescence is detected with an image-intensified 100 x 100 photodiode-array camera. Two pairs of counterpropagating laser sheets sequentially probe the flow to determine two velocity components. The frequency in one pair is shifted with respect to the other by an acousto-optic modulator. This two-frequency scheme eliminates the need to determine the slope of the line externally and offers the potential for combined pressure and velocity-field measurements.

  View details for Web of Science ID A1985AGA8900004

  View details for PubMedID 19724395

• Shock Tube Study of the Reaction between Hydrogen Cyanide and Atomic Oxygen Twentieth Symposium (International) on Combustion Hanson, R. K., Bowman, C. T. 1985: 647–54

  View details for DOI 10.1016/S0082-0784(85)80554-3

• Shock-tube study of HCN self-broadening and broadening by argon for the P(10) line of the ν1 band at 3 μm Journal of Quantitative Spectroscopy and Radiative Transfer Chang, A. Y., Hanson, R. K. 1985; 33 (3): 213–217

  View details for DOI 10.1016/0022-4073(85)90150-5

• FAST LASER-INDUCED AEROSOL FORMATION FOR VISUALIZATION OF GAS-FLOWS REVIEW OF SCIENTIFIC INSTRUMENTS Hassa, C., Hanson, R. K. 1985; 56 (4): 557-559

  View details for Web of Science ID A1985AFE0200010

• SHOCK-TUBE STUDY OF HCN SELF-BROADENING AND BROADENING BY ARGON FOR THE P(10) LINE OF THE V1 BAND AT 3-MU-M JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Chang, A. Y., Hanson, R. K. 1985; 33 (3): 213-217

  View details for Web of Science ID A1985AJL5600003

• FLOW VISUALIZATION IN LOW-PRESSURE CHAMBERS USING LASER-INDUCED BIACETYL PHOSPHORESCENCE JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B Itoh, F., KYCHAKOFF, G., Hanson, R. K. 1985; 3 (6): 1600-1603

  View details for Web of Science ID A1985AWE8500005

• INSTANTANEOUS TEMPERATURE-FIELD MEASUREMENTS USING PLANAR LASER-INDUCED FLUORESCENCE OPTICS LETTERS Seitzman, J. M., KYCHAKOFF, G., Hanson, R. K. 1985; 10 (9): 439-441

  Abstract

  A single-pulse, laser-induced-fluorescence diagnostic for the measurement of two-dimensional temperature fields in combustion flows is described. The method uses sheet illumination from a tunable laser to excite planar laserinduced fluorescence in a stable tracer molecule, seeded at constant mole fraction into the flow field. The temporal resolution of this technique is determined by the laser pulse length. Experimental results are presented for a rodstabilized, premixed methane-air flame, using the Q(1) (22) line of the nitric oxide A(2) Sigma(+) (v = 0) ? X(2)II((1/2))(v = 0) transition (lambda approximately 225.6 nm).

  View details for Web of Science ID A1985APM7300005

  View details for PubMedID 19724474

• Laser Fluorescence Imaging of O2 in Combustion Flows Using an ArF Laser Western States Section/The Combustion Institute Fall Meeting Lee, M. P., Paul, P. H., Hanson, R. K. 1985
• Simultaneous Multiple-Point Measurements of OH in Combustion Gases Using Planar Laser-Induced Fluorescence Twentieth Symposium (International) on Combustion Kychakoff, G., Hanson, R. K., Howe, R. D. 1985: 1265–72

  View details for DOI 10.1016/S0082-0784(85)80616-0

• Shock Tube Study of NCO Kinetics Twentieth Symposium (International) on Combustion Louge, M. Y., Hanson, R. K. 1985: 665–72

  View details for DOI 10.1016/S0082-0784(85)80556-7

• SHOCK-TUBE STUDY OF CYANOGEN OXIDATION-KINETICS INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Louge, M. Y., Hanson, R. K. 1984; 16 (3): 231-250

  View details for Web of Science ID A1984SF58100005

• VELOCITY VISUALIZATION IN GAS-FLOWS USING LASER-INDUCED PHOSPHORESCENCE OF BIACETYL REVIEW OF SCIENTIFIC INSTRUMENTS HILLER, B., BOOMAN, R. A., Hassa, C., Hanson, R. K. 1984; 55 (12): 1964-1967

  View details for Web of Science ID A1984AAA6600014

• HIGH-TEMPERATURE STUDY OF THE REACTIONS OF O AND OH WITH NH3 INTERNATIONAL JOURNAL OF CHEMICAL KINETICS SALIMIAN, S., Hanson, R. K., Kruger, C. H. 1984; 16 (6): 725-739

  View details for Web of Science ID A1984SV49600008

• RAPID-TUNING FREQUENCY-DOUBLED RING DYE-LASER FOR HIGH-RESOLUTION ABSORPTION-SPECTROSCOPY IN SHOCK-HEATED GASES APPLIED OPTICS Rea, E. C., SALIMIAN, S., Hanson, R. K. 1984; 23 (11): 1691-1694

  View details for Web of Science ID A1984SU67800007

  View details for PubMedID 20424713

• SPATIALLY RESOLVED COMBUSTION MEASUREMENTS USING CROSS-BEAM SATURATED ABSORPTION-SPECTROSCOPY APPLIED OPTICS KYCHAKOFF, G., Howe, R. D., Hanson, R. K. 1984; 23 (9): 1303-1305

  View details for Web of Science ID A1984SR30100005

  View details for PubMedID 20424699

• QUANTITATIVE HIGH-TEMPERATURE ABSORPTION-SPECTROSCOPY OF NCO AT 305 AND 440 NM JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Louge, M. Y., Hanson, R. K., Rea, E. C., BOOMAN, R. A. 1984; 32 (4): 353-362

  View details for Web of Science ID A1984TZ15200009

• SHOCK-TUBE STUDY OF THE THERMAL-DECOMPOSITION OF CYANOGEN JOURNAL OF CHEMICAL PHYSICS Szekely, A., Hanson, R. K., Bowman, C. T. 1984; 80 (10): 4982-4985

  View details for Web of Science ID A1984SS95800048

• THERMAL-DECOMPOSITION OF HYDROGEN-CYANIDE BEHIND INCIDENT SHOCK-WAVES JOURNAL OF PHYSICAL CHEMISTRY Szekely, A., Hanson, R. K., Bowman, C. T. 1984; 88 (4): 666-668

  View details for Web of Science ID A1984SF45600009

• FLOW VISUALIZATION IN COMBUSTION GASES USING NITRIC-OXIDE FLUORESCENCE AIAA JOURNAL KYCHAKOFF, G., Knapp, K., Howe, R. D., Hanson, R. K. 1984; 22 (1): 153-154

  View details for Web of Science ID A1984RX31300028

• TUNABLE DIODE-LASER MEASUREMENTS OF SPECTRAL PARAMETERS OF HCN AT ROOM-TEMPERATURE JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Varghese, P. L., Hanson, R. K. 1984; 31 (6): 545-559

  View details for Web of Science ID A1984TH78700007

• The Visualization of Turbulent Flame Fronts Using Planar Laser-Induced Fluorescence Science Kychakoff, G., Howe, R. D., Hanson, R. K., Drake, M. D., Pitz, R., Lapp, M., Penney, C. M. 1984; 224: 382-384

  View details for DOI 10.1126/science.224.4647.382

• Temperature Field Measurements in Combustion Gases Using Planar Laser-Induced Fluorescence Fall Meeting, Western States Section/The Combustion Institute Kychakoff, G., Seitzman, J. R., Hanson, R. K. 1984
• AMMONIA OXIDATION IN SHOCK-HEATED NH3-N2O-AR MIXTURES COMBUSTION AND FLAME SALIMIAN, S., Hanson, R. K., Kruger, C. H. 1984; 56 (1): 83-95

  View details for Web of Science ID A1984SJ55600006

• Recent Developments in Absorption and Fluorescence Laser Diagnostics for High Temperature Gases L.I.A. (Laser Inst. of America) Hanson, R. K., Louge, M. Y., Rea Jr, E. C., Seitzman, J. M., Hiller, B. 1984; 47 (ICALEO): 98-106
• High Temperature Kinetics of the Free Radical NCO Western States Section/Combustion Institute Meeting Louge, M. Y., Hanson, R. K. 1984
• Laser Absorption Techniques for Spectroscopy and Chemical Kinetics Studies in a Shock Tube presented at 14th International Shock Tube Symposium, Sydney , in Shock Tubes and Waves Hanson, R. K., Salimian, S., Rea Jr, E. C. Sydney Symposium Publishers. 1984: 594–601
• Laser-Based Diagnostics for Flowfield Measurements Amer. Soc. Mech. Eng. AMD Hanson, R. K., Hiller, B., Rea Jr, E. C., Seitzman, J. M., Kychakoff, G., Howe, R. D. 1984; 66: 1-10
• High-Temperature Determination of the Rate Coefficient for the Reaction CN + H2O -> OH + HCN International Journal of Chemical Kinetics Hanson, R. K., Bowman, C. T. 1984; 16 (12): 1609-1621

  View details for DOI 10.1002/kin.550161214

• QUANTITATIVE FLOW VISUALIZATION TECHNIQUE FOR MEASUREMENTS IN COMBUSTION GASES APPLIED OPTICS KYCHAKOFF, G., Howe, R. D., Hanson, R. K. 1984; 23 (5): 704-712

  View details for Web of Science ID A1984SF80300015

  View details for PubMedID 18204630

• COLLISIONAL NARROWING EFFECTS ON SPECTRAL-LINE SHAPES MEASURED AT HIGH-RESOLUTION APPLIED OPTICS Varghese, P. L., Hanson, R. K. 1984; 23 (14): 2376-2385

  View details for Web of Science ID A1984TA59400036

  View details for PubMedID 18213005

• HIGH-TEMPERATURE KINETICS OF NCO COMBUSTION AND FLAME Louge, M. Y., Hanson, R. K. 1984; 58 (3): 291-300

  View details for Web of Science ID A1984TV74400008

• Tunable Laser Absorption and Fluorescence Techniques for Combustion Research invited paper at fall meeting of the APS Hanson, R. K. 1983
• SPATIALLY RESOLVED TUNABLE DIODE-LASER ABSORPTION-MEASUREMENTS OF CO USING OPTICAL STARK SHIFTING APPLIED OPTICS Knapp, K., Hanson, R. K. 1983; 22 (13): 1980-1985

  View details for Web of Science ID A1983QX26900011

  View details for PubMedID 18196066

• SHOCK-TUBE ABSORPTION-MEASUREMENTS OF OH USING A REMOTELY LOCATED DYE-LASER APPLIED OPTICS Hanson, R. K., SALIMIAN, S., KYCHAKOFF, G., BOOMAN, R. A. 1983; 22 (5): 641-643

  View details for Web of Science ID A1983QF11900002

  View details for PubMedID 18195842

• RAPID EXTENDED RANGE TUNING OF SINGLE-MODE RING DYE-LASERS APPLIED OPTICS Rea, E. C., Hanson, R. K. 1983; 22 (4): 518-520

  View details for Web of Science ID A1983QC98900007

  View details for PubMedID 20401145

• FIBER-OPTIC ABSORPTION FLUORESCENCE PROBES FOR COMBUSTION MEASUREMENTS APPLIED OPTICS KYCHAKOFF, G., KIMBALLLINNE, M. A., Hanson, R. K. 1983; 22 (10): 1426-1428

  View details for Web of Science ID A1983QQ95300005

  View details for PubMedID 20404872

• LASER-INDUCED FLUORESCENCE TECHNIQUE FOR VELOCITY-FIELD MEASUREMENTS IN SUBSONIC GAS-FLOWS OPTICS LETTERS HILLER, B., McDaniel, J. C., Rea, E. C., Hanson, R. K. 1983; 8 (9): 474-476

  Abstract

  A nonintrusive optical technique is reported for multiple-point velocity measurements in subsonic flows. The technique is based on the detection of fluorescence from a Doppler-shifted absorption line of seeded iodine molecules excited at a laser frequency fixed in the wing of the line. Counterpropagating laser sheets are used to illuminate the flow, in the present case a nitrogen round jet, thereby eliminating the need for an unshifted reference signal. The fluorescence is detected simultaneously at 10,000 points in a plane of the flow using a 100 x 100 element photodiode-array camera. The velocity at each point is computed from four successive camera frames, each recorded with a different beam direction. The measured mean velocities between 5 and 50 m/sec agree well with data from the literature.

  View details for Web of Science ID A1983RE62000004

  View details for PubMedID 19718152

• TUNABLE DIODE-LASER ABSORPTION-MEASUREMENTS OF NITRIC-OXIDE IN COMBUSTION GASES COMBUSTION SCIENCE AND TECHNOLOGY FALCONE, P. K., Hanson, R. K., Kruger, C. H. 1983; 35 (1-4): 81-99

  View details for Web of Science ID A1983SX80600005

• HIGH-TEMPERATURE DETERMINATION OF THE RATE COEFFICIENT FOR THE REACTION H2+CN-]H+HCN INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Szekely, A., Hanson, R. K., Bowman, C. T. 1983; 15 (9): 915-923

  View details for Web of Science ID A1983RH56700006

• SIMULTANEOUS MULTIPLE-POINT VELOCITY-MEASUREMENTS USING LASER-INDUCED IODINE FLUORESCENCE OPTICS LETTERS McDaniel, J. C., HILLER, B., Hanson, R. K. 1983; 8 (1): 51-53

  Abstract

  A technique is demonstrated for measuring velocity at multiple locations in a plane of a gaseous flowfield using Doppler-shifted absorption with fluorescence detection from iodine molecules, excited by a sheet of tunable single-axial-mode argon-ion laser radiation at 514.5 nm. Measurements were made simultaneously at 10,000 points in an iodine-seeded supersonic flowfield with a 100 x 100 element photodiode array camera and were found to agree well with a numerical solution for the velocity field. The accuracy with which a component of velocity can be measured is limited, in the current approach, by the iodine linewidth to about +/-5 m/sec.

  View details for Web of Science ID A1983PY53100018

  View details for PubMedID 19714132

• SHOCK-TUBE DETERMINATION OF THE RATE COEFFICIENT FOR THE REACTION CN+HCN-]C2N2+H INTERNATIONAL JOURNAL OF CHEMICAL KINETICS Szekely, A., Hanson, R. K., Bowman, C. T. 1983; 15 (11): 1237-1241

  View details for Web of Science ID A1983RP62700009

• TUNABLE DIODE-LASER MEASUREMENTS OF THE BAND STRENGTH AND COLLISION HALFWIDTHS OF NITRIC-OXIDE JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER FALCONE, P. K., Hanson, R. K., Kruger, C. H. 1983; 29 (3): 205-221

  View details for Web of Science ID A1983QH32700002

• Fully Resolved Absorption/Fluorescence Lineshape Measurements of OH Using a Rapid-Scanning Ring Dye Laser Western States Section/Combustion Institute Fall Meeting Rea Jr, E. C., Hanson, R. K. 1983
• Flow Visualization in Combustion Gases Using Planar Laser-Induced Fluorescence 21st Aerospace Sciences Meeting Kychakoff, G., Howe, R. D., Hanson, R. K., Knapp, K. 1983

  View details for DOI 10.2514/6.1983-405

• Use of Planar Laser-Induced Fluorescence for the Study of Combustion Flowfields 19th Joint Propulsion Conference Kychakoff, G., Howe, R. D., Hanson, R. K. 1983

  View details for DOI 10.2514/6.1983-1361

• Quantitative Visualization of Flowfields Using Laser-Induced Fluorescence 3rd Int. Flow Visualization Symp. McDaniel, J. C., Hanson, R. K. 1983
• The Technique of Rapid Generation of OH Radicals Behind Shock Waves and its Application to the Study of Combustion Kinetics Western States Section/Combustion Institute Fall Meeting Szekely, A., Hanson, R. K., Bowman, C. T. 1983
• Laser-Induced Fluorescence Technique for Velocity Field Measurements in Compressible Flows APS Fluid Dynamics Meeting Hanson, R. K. 1983
• ABSORPTION-MEASUREMENTS OF H2O AT HIGH-TEMPERATURES USING A CO LASER JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER SALIMIAN, S., Hanson, R. K. 1983; 30 (1): 1-7

  View details for Web of Science ID A1983QU14900001

• TUNABLE DIODE-LASER MEASUREMENTS IN COMBUSTION GASES PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS Hanson, R. K. 1983; 438: 75-83

  View details for Web of Science ID A1983SU57300012

• QUANTITATIVE VISUALIZATION OF COMBUSTION SPECIES IN A PLANE APPLIED OPTICS KYCHAKOFF, G., Howe, R. D., Hanson, R. K., McDaniel, J. C. 1982; 21 (18): 3225-3227

  View details for Web of Science ID A1982PH31400001

  View details for PubMedID 20396209

• LASER-ABSORPTION SAMPLING PROBE FOR TEMPORALLY AND SPATIALLY RESOLVED COMBUSTION MEASUREMENTS APPLIED OPTICS SCHOENUNG, S. M., Hanson, R. K. 1982; 21 (10): 1767-1771

  Abstract

  A small sampling probe with a compact in-line absorption cell has been combined with tunable diode laser absorption spectroscopy for measuring mole fractions of IR-active species in combustion gases with temporal and spatial resolution. The system characteristics are described, and initial results are reported for CO in a CO/air turbulent diffusion flame.

  View details for Web of Science ID A1982NP90600018

  View details for PubMedID 20389937

• Quantitative Flow Visualization in Combustion Gases Western States Section/The Combustion Institute Meeting Kychakoff, G., Knapp, K., Howe, R. D., Hanson, R. K. 1982
• Shock Tube Study of the Thermal Dissociation of Hydrogen Cyanide Shock Tubes and Waves Hanson, R. K., Bowman, C. T. State University of New York Press. 1982: 617–621
• Temporally and Spatially Resolved Measurements of Fuel Mole Fraction in a Turbulent CO Diffusion Flame Nineteenth Symposium (International) on Combustion Schoenung, S. M., Hanson, R. K. 1982

  View details for DOI 10.1016/S0082-0784(82)80217-8

• Gas Phase Reaction Kinetics of NOx Formation from Fuel Nitrogen in Fossil Fuel Combustion Joint Symposium on Stationary Combustion NOx Control Bowman, C. T., Hanson, R. K., Louge, M., Garman, A. 1982
• A Fiber-Optic Fluorescence Probe for Species Measurements in Combustors Western States Section/The Combustion Institute Meeting, Livermore, CA Kimball-Linne, M. A., Kychakoff, G., Hanson, R. K., Booman, R. A. 1982: 82-50
• Survey of Rate Constants in the N/H/O System Chapter 6 in Combustion Chemistry Hanson, R. K., Salimian, S. edited by Gardiner Jr, W. C. Springer-Verlag. 1982: 361–421

  View details for DOI 10.1007/978-1-4684-0186-8_6

• Tunable laser Absorption/Fluorescence Fiberoptic Probe for Combustion Measurements Western States Section/The Combustion Institute Kychakoff, G., Hanson, R. K. 1981: 81-50
• A shock tube study of the decomposition of NO in the presence of NH3 Eighteenth Symposium (International) on Combustion Roose, T. R., Hanson, R. K., Kruger, C. H. 1981: 853–62

  View details for DOI 10.1016/S0082-0784(81)80089-6

• CO AND TEMPERATURE-MEASUREMENTS IN A FLAT FLAME BY LASER-ABSORPTION SPECTROSCOPY AND PROBE TECHNIQUES COMBUSTION SCIENCE AND TECHNOLOGY SCHOENUNG, S. M., Hanson, R. K. 1981; 24 (5-6): 227-237

  View details for Web of Science ID A1981LA99700008

• ROOM-TEMPERATURE MEASUREMENTS OF COLLISION WIDTHS OF CO LINES BROADENED BY H2O JOURNAL OF MOLECULAR SPECTROSCOPY Varghese, P. L., Hanson, R. K. 1981; 88 (1): 234-235

  View details for Web of Science ID A1981MA13000021

• LASER-ABSORPTION SAMPLING PROBE FOR TEMPORALLY AND SPATIALLY RESOLVED COMBUSTION MEASUREMENTS SCHOENUNG, S. M., Hanson, R. K. IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. 1981: 156–56

  View details for Web of Science ID A1981MT58700254

• OPTICAL FIBER PROBE USING TUNABLE LASER-ABSORPTION SPECTROSCOPY FOR COMBUSTION MEASUREMENTS PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS KYCHAKOFF, G., Hanson, R. K. 1981; 288: 236-240

  View details for Web of Science ID A1981NF94300034

• COLLISION WIDTH MEASUREMENTS OF CO IN COMBUSTION GASES USING A TUNABLE DIODE-LASER JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Varghese, P. L., Hanson, R. K. 1981; 26 (4): 339-347

  View details for Web of Science ID A1981ML07800006

• Tunable infrared diode laser measurements of line strengths and collision widths of 12C 16O at room temperature Journal of Quantitative Spectroscopy and Radiative Transfer Varghese, P. L., Hanson, R. K. 1980; 24 (6): 479-489

  View details for DOI 10.1016/0022-4073(80)90017-5

• ABSORPTION-SPECTROSCOPY IN SOOTING FLAMES USING A TUNABLE DIODE-LASER APPLIED OPTICS Hanson, R. K. 1980; 19 (4): 482-484

  View details for Web of Science ID A1980JF68400004

  View details for PubMedID 20216877

• PERFORMANCE OF A CW DOUBLE ELECTRIC-DISCHARGE FOR SUPERSONIC CO LASERS JOURNAL OF APPLIED PHYSICS Stanton, A. C., Hanson, R. K., MITCHNER, M. 1980; 51 (3): 1370-1378

  View details for Web of Science ID A1980JS20600016

• VIBRATIONAL KINETICS IN CO ELECTRIC-DISCHARGE LASERS - MODELING AND EXPERIMENTS JOURNAL OF APPLIED PHYSICS Stanton, A. C., Hanson, R. K., MITCHNER, M. 1980; 51 (3): 1360-1369

  View details for Web of Science ID A1980JS20600015

• A KINETIC-STUDY OF NO REMOVAL FROM COMBUSTION GASES BY INJECTION OF NHI-CONTAINING COMPOUNDS COMBUSTION SCIENCE AND TECHNOLOGY SALIMIAN, S., Hanson, R. K. 1980; 23 (5-6): 225-230

  View details for Web of Science ID A1980KJ24900005

• Thermal Decomposition of NH3 in Shock Waves Shock Tube and Waves Roose, T. R., Hanson, R. K., Kruger, C. H. 1980: 476
• SHOCK-TUBE MEASUREMENTS OF RATE COEFFICIENTS OF ELEMENTARY GAS REACTIONS JOURNAL OF PHYSICAL CHEMISTRY Bowman, C. T., Hanson, R. K. 1979; 83 (6): 757-763

  View details for Web of Science ID A1979GN84300023

• ABSORPTION SPECTROSCOPY OF COMBUSTION GASES USING A TUNABLE INFRARED DIODE-LASER Hanson, R. K., FALCONE, P. K., Varghese, P. L., SCHOENUNG, S. M. AMER CHEMICAL SOC. 1979: 81–81

  View details for Web of Science ID A1979HJ68900572

• Combustion Gas Measurements Using Tunable Laser Absorption Spectroscopy 17th Aerospace Sciences Meeting Hanson, R. K. 1979

  View details for DOI 10.2514/6.1979-86

• Measurements of Nitric Oxide in Combustion Gases Using a Tunable Diode Laser Autumn meeting of the Western States Section of the Combustion Institute Falcone, P. K., Hanson, R. K., Kruger, C. H. 1979: 79-53
• CO Measurements in Combustion Gases by Laser Absorption Spectroscopy and Probe Sampling Western States Section, Combustion Institute Paper Schoenung, S. M., Hanson, R. K., Falcone, P. K. 1978: #78-46
• TEMPERATURE-MEASUREMENT TECHNIQUE FOR HIGH-TEMPERATURE GASES USING A TUNABLE DIODE-LASER APPLIED OPTICS Hanson, R. K., FALCONE, P. K. 1978; 17 (16): 2477-2480

  View details for Web of Science ID A1978FL55800004

  View details for PubMedID 20203804

• KINETICS OF NITROUS-OXIDE DECOMPOSITION COMBUSTION SCIENCE AND TECHNOLOGY MONAT, J. P., Hanson, R. K., Kruger, C. H. 1977; 16 (1-2): 21-28

  View details for Web of Science ID A1977DT35500003

• HIGH-RESOLUTION SPECTROSCOPY OF COMBUSTION GASES USING A TUNABLE IR DIODE-LASER APPLIED OPTICS Hanson, R. K., Kuntz, P. A., Kruger, C. H. 1977; 16 (8): 2045-2048

  View details for Web of Science ID A1977DP74300020

  View details for PubMedID 20168872

• FLOW TUBE REACTOR STUDY OF THERMAL-DECOMPOSITION RATES OF NITRIC-OXIDE COMBUSTION SCIENCE AND TECHNOLOGY McCullough, R. W., Kruger, C. H., Hanson, R. K. 1977; 15 (5-6): 213-223

  View details for Web of Science ID A1977DM44900004

• SHOCK-TUBE SPECTROSCOPY - ADVANCED INSTRUMENTATION WITH A TUNABLE DIODE-LASER APPLIED OPTICS Hanson, R. K. 1977; 16 (6): 1479-1481

  View details for Web of Science ID A1977DG48200019

  View details for PubMedID 20168718

• EXPERIMENTAL-STUDY OF NITRIC-OXIDE DECOMPOSITION BY REACTION WITH HYDROGEN COMBUSTION SCIENCE AND TECHNOLOGY Flower, W. L., Hanson, R. K., Kruger, C. H. 1977; 15 (3-4): 115-128

  View details for Web of Science ID A1977DE59000005

• ABSORPTION OF CO LASER-RADIATION BY NO JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Hanson, R. K., MONAT, J. P., Kruger, C. H. 1976; 16 (8): 705-713

  View details for Web of Science ID A1976BY91300009

• Measurements of the Reaction Rate Constants of NO + O -> N + O2 and NO + H -> N + OH at 1700 and 2100 K Western States Section, Combustion Institute McCullough, R. W., Kruger, C. H., Hanson, R. K. 1976
• DOUBLE-DISCHARGE ARRANGEMENT FOR CW ELECTRICAL EXCITATION OF SUPERSONIC FLOWS APPLIED PHYSICS LETTERS Blom, J. H., Hanson, R. K. 1975; 26 (4): 190-192

  View details for Web of Science ID A1975V466200022

• Kinetics of the Reaction of Nitric Oxide with Hydrogen Fifteenth Symposium (International) on Combustion Flower, W. L., Hanson, R. K., Kruger, C. H. 1975: 823–32

  View details for DOI 10.1016/S0082-0784(75)80350-X

• Decomposition of NO Studied by Infrared Emission and CO Laser Absorption Modern Developments in Shock Tube Research, 10th International Shock Tube Symposium Hanson, R. K., Flower, W. L., Monat, J. P., Kruger, C. H. edited by Kamimoto, G. Shock Tube Research Society. 1975: 536
• DETERMINATION OF RATE CONSTANT FOR REACTION O+NO-]N+O2 COMBUSTION SCIENCE AND TECHNOLOGY Hanson, R. K., Flower, W. L., Kruger, C. H. 1974; 9 (3-4): 79-86

  View details for Web of Science ID A1974W300900001

• SHOCK-TUBE STUDY OF CARBON-MONOXIDE DISSOCIATION KINETICS JOURNAL OF CHEMICAL PHYSICS Hanson, R. K. 1974; 60 (12): 4970-4976

  View details for Web of Science ID A1974T585800050

• The Dissociation of Shock-Heated Carbon Monoxide in Recent Developments in Shock Tube Research Hanson, R. K. Stanford University Press. 1973: 365
• VERIFICATION OF A SIMPLE RELATIONSHIP FOR SHOCK-WAVE REFLECTION IN A RELAXING GAS AIAA JOURNAL Hanson, R. K., FLOWER, W. 1973; 11 (12): 1777-1778

  View details for Web of Science ID A1973R516200041

• EXPERIMENTAL STUDY OF SHOCK-WAVE REFLECTION FROM A THERMALLY ACCOMMODATING WALL PHYSICS OF FLUIDS Hanson, R. K. 1973; 16 (3): 369-374

  View details for Web of Science ID A1973P145000005

• Reflection of a Thick Planar Shock Wave from a Coplanar Surface 8th International Symposium on Rarefied Gas Dynamics Deiwert, G. S., Hanson, R. K. 1973

  View details for DOI 10.1016/B978-0-12-398150-9.50018-3

• IMPROVED FAST RESPONSE PRESSURE GAUGE FOR SHOCK REFLECTION STUDIES IN IONIZED GASES REVIEW OF SCIENTIFIC INSTRUMENTS Hanson, R. K., Baganoff, D. 1972; 43 (3): 394-?

  View details for Web of Science ID A1972L845600005

• SHOCK-TUBE STUDY OF NITROGEN DISSOCIATION RATES USING PRESSURE MEASUREMENTS AIAA JOURNAL Hanson, R. K., Baganoff, D. 1972; 10 (2): 211-?

  View details for Web of Science ID A1972L412800020

• Shock-Wave Reflection in a Relaxing Gas Journal of Fluid Mechanics Hanson, R. K. 1971; 45 (4): 721-746

  View details for DOI 10.1017/S0022112071000296

• IONIZATION RELAXATION TIME MEASUREMENTS IN NEON JOURNAL OF CHEMICAL PHYSICS Hanson, R. K. 1971; 55 (7): 3601-?

  View details for Web of Science ID A1971K488600077

• SHOCK-TUBE STUDY OF VIBRATIONAL RELAXATION IN CARBON MONOXIDE USING PRESSURE MEASUREMENTS AIAA JOURNAL Hanson, R. K. 1971; 9 (9): 1811-?

  View details for Web of Science ID A1971K189400023

• The Influence of Film Thickness on the Calibration of Thin-Film-Gauge Backing Materials AIAA Journal Hanson, R. K. 1971; 9: 975-977

  View details for DOI 10.2514/3.6317

• Study of Gas-Solid Interaction Using Shock-Wave Reflection in Shock-Tube Research Hanson, R. K. Imperial College, London. 1971: 1–12
• REFLECTION OF A SHOCK WAVE INTO A DENSITY GRADIENT AIAA JOURNAL Hanson, R. K., Baganoff, D. 1970; 8 (4): 805-?

  View details for Web of Science ID A1970G105100032

• SHOCK-TUBE STUDY OF VIBRATIONAL RELAXATION IN NITROGEN USING PRESSURE MEASUREMENTS JOURNAL OF CHEMICAL PHYSICS Hanson, R. K., Baganoff, D. 1970; 53 (11): 4401-?

  View details for Web of Science ID A1970H913800048

• NUMERICAL SOLUTIONS OF REFLECTED SHOCK-WAVE FLOWFIELDS WITH NONEQUILIBRIUM CHEMICAL REACTIONS AIAA JOURNAL Presley, L. L., Hanson, R. K. 1969; 7 (12): 2267-?

  View details for Web of Science ID A1969E863100012

• Numerical Solutions of Reflected Shock-Wave Flowfields with Nonequilibrium Chemical Reactions Fluid and Plasma Dynamics Conference Presley, L. L., Hanson, R. K. 1968

  View details for DOI 10.2514/6.1968-732

• EFFECTS OF DISSOCIATION RATE MAGNITUDES AND RELATIVE COLLISION EFFICIENCIES ON RELAXATION PROFILES IN DIATOMIC GASES AIAA JOURNAL Hanson, R. K., Watson, R. 1966; 4 (4): 749-?

  View details for Web of Science ID A19667587600046

• Digital Imaging of Species Concentration Fields in Spray Flames Twenty-First Symposuim (International) on Combustion Allen, M. G., Hanson, R. K. 1986

  View details for DOI 10.1016/S0082-0784(88)80409-0

• Imaging and Characterization of OH Structures in a Turbulent Nonpremixed Flame Twenty-Third Symposium (International) on Combustion Seitzman, J. M., Üngüt, A., Paul, P. H., Hanson, R. K. 1990

  View details for DOI 10.1016/S0082-0784(06)80311-5

• Shock tube determination of the rate coefficient for the reaction N2+O→NO+N The Seventeenth Symposium (International) on Combustion Monat, J. P., Hanson, R. K., Kruger, C. H. 1978: 543–52

  View details for DOI 10.1016/S0082-0784(79)80055-7

• Investigation of Nitric Oxide Decomposition in the Temperature Range 2500-4100oK Spring meeting of the Western States Section of the Combustion Institute Flower, W. L., Hanson, R. K., Kruger, C. H. 1974
• A Shock Tube Study of H + HNCO -> H2 + NCO and the Thermal Decomposition of NCO Twenty-Sixth Symposium (International) on Combustion Mertens, J. D., Hanson, R. K. 1996: 551–555

  View details for DOI 10.1016/S0082-0784(96)80259-1

• Laser Fluorescence Imaging Diagnostics for Gaseous Flows Lasers '85; Proceedings of the 8th International Conference Hanson, R. K., Seitzman, J. M., Haumann, J., Lee, M. P., Paul, P. H. 1985
• Resonance Absorption Spectroscopy of Combustion Gases Using Tunable Infrared Diode Lasers Fall Meeting of the Eastern States Section, The Combustion Institute Hanson, R. K., Kuntz, P. A., Kruger, C. H. 1976
• Laser Fluorescence Imaging of Temperature Fields in Air CLEO 1986 Paul, P. H., Lee, M. P., Hanson, R. K. 1986
• Fundamental Kinetics Database Utilizing Shock Tube Measurements: Reaction Rate Measurements High Temperature Gasdynamics Laboratory Davidson, D., F., Hanson, R., K. ; 3
• Measurement of the Rate Coefficient of H + O2 (+M) -> HO2 (+M) for M = Ar and N2 at High Pressures Twenty-Sixth Symposium (International) on Combustion Davidson, D. F., Petersen, E. L., Röhrig, M., Hanson, R. K., Bowman, C. T. 1996: 481–88

  View details for DOI 10.1016/S0082-0784(96)80250-5

• Planar Laser-Induced Fluorescence Imaging of Shock-Induced Ignition Twenty-Third Symposium (International) on Combustion McMillin, B. K., Lee, M. P., Paul, P. H., Hanson, R. K. 1990: 1909–1914

  View details for DOI 10.1016/S0082-0784(06)80473-X

• Preliminary Investigation into the Influence of Transverse Waves in PDE Simulations 21st Int. Colloquium on the Dynamics of Explosions and Reactive Systems Owens, Z. K., Hanson, R. K. 2007
• Tunable Mid-IR Sensing of a JR10-Fueled Pulse Detonation Engine 21st Int. Colloquium on the Dynamics of Explosions and Reactive Systems Barbour, E. A., Hutcheson, P., Brophy, C., Sinibaldi, J. O., Hanson, R. K. 2007
• Fiber-Optic Sensor Systems for Industrial Monitoring Applications CLEO 1984 Kychakoff, G., Paul, P. H., Hanson, R. K. 1984
• Temperature Field Measurements in Combustion Gases Using Planar Laser-Induced Fluorescence CLEO 1984 Kychakoff, G., Seitzman, J. M., Hanson, R. K. 1984
• Mid-infrared Laser Absorption Diagnostics for Detonation Studies 29th International Symposium on Shock Waves Spearrin, R. M., Goldenstein, C. S., Jeffries, J. B., Hanson, R. K. : 149–154

  View details for DOI 10.1007/978-3-319-16835-7_39

• Species Imaging in Spray Flames CLEO 1986 Allen, M. G., Hanson, R. K. 1986
• High-temperature Shock Tube Measurements of Methyl Radical Decomposition 19th Int. Symp. on Gas Kinetics Vasudevan, V., Hanson, R. K., Bowman, C. T., Golden, D. M. 2006
• Laser Photolysis Shock Tube for Combustion Kinetics Studies Twenty-Second Symposium (International) on Combustion Davidson, D. F., Chang, A. Y., Hanson, R. K. 1988

  View details for DOI 10.1016/S0082-0784(89)80202-4

• Combined Measurements of Velocity and Pressure Fields in Compressible Flows Using Laser-Induced Fluorescence Proceedings of the 8th International Conference, Lasers '85 Hiller, B., Hanson, R. K. 1985
• Constrained Reaction Volume: A Strategy for Reflected Shock Wave Experiments 24th ICDERS Hanson, R. K., Chakraborty, S., Pang, G. A., Ren, W., Wang, S., Davidson, D. F. 2013
• A Shock Tube Study of the CO+OH → CO2+H Reaction Twenty-Fifth Symposium (International) on Combustion Wooldridge, M. S., Hanson, R. K., Bowman, C. T. 1994: 741–748

  View details for DOI 10.1016/S0082-0784(06)80706-X

• A Shock Tube Study of Methane Decomposition Using Laser Absorption by CH3 Twenty-Fourth Symposium (International) on Combustion Davidson, D. F., DiRosa, M. D., Chang, A. Y., Hanson, R. K., Bowman, C. T. 1992: 589–596

  View details for DOI 10.1016/S0082-0784(06)80072-X

• Advances in Diode Laser Absorption Sensors for Combustion and Propulsion Laser Applications to Chemical, Security and Environmental Analysis Hanson, R. K., Jeffries, J. B. 2006

  View details for DOI 10.1364/LACSEA.2006.ThC1

• Double-pulse imaging using simultaneous OH/acetone plif for studying the evolution of high-speed, reacting mixing layers Twenty-Fifth Symposium (International) on Combustion Seitzman, J. M., Miller, M. F., Island, T. C., Hanson, R. K. 1994: 1743–1750

  View details for DOI 10.1016/S0082-0784(06)80823-4

• CW dye laser technique for simultaneous, spatially-resolved measurements of temperature, pressure, and velocity of NO in an underexpanded free jet 30th Aerospace Sciences Meeting and Exhibit DiRosa, M. D., Chang, A. Y., Hanson, R. K. 1992

  View details for DOI 10.2514/6.1992-6

• Spectroscopic diagnostics using tunable diode lasers CLEO 1995 Hanson, R. K. 1995
• Laser absorption sampling probe for temporally and spatially resolved combustion measurements CLEO 1981 Schoenung, S. M., Hanson, R. K. 1981
• High Temperature Shock Tube Study of Reactions of CH and C-Atoms with N2 Twenty-Third Symposium (International) on Combustion Dean, A. J., Hanson, R. K., Bowman, C. T. 1990: 259–265

  View details for DOI 10.1016/S0082-0784(06)80268-7

• Multiplexed diode-laser sensor system for vapor-phase semiconductor wafer cleaning process monitoring CLEO 1998 Chou, S., Baer, D. S., Hanson, R. K. 1998

  View details for DOI 10.1109/CLEO.1998.676300

• Current trends in imaging diagnostics for gaseous flows CLEO 1985 Hanson, R. K. 1985
• Use of planar laser-induced fluorescence for combustion measurements CLEO 1983 Kychakoff, G., Howe, R. D., Hanson, R. K. 1983
• Spatially resolved combustion measurements using crossed-beam saturated absorption spectroscopy CLEO 1982 Kychakoff, G., Howe, R. D., Hanson, R. K. 1982
• Laser-induced fluorescence technique for velocity field measurements in subsonic flows CLEO 1983 McDaniel, J. C., Hiller, B., Hanson, R. K. 1983
• Shock tube measurements of the rate coefficient for N+CH3→H2CN+H using N-atom aras and excimer photolysis of NO Twenty-Third Symposium (International) on Combustion Davidson, D. F., Hanson, R. K. 1991: 267–273

  View details for DOI 10.1016/S0082-0784(06)80269-9

• A Shock Tube Study of the Reactions of NCO with O and NO using NCO Laser Absorption Twenty-Fourth Symposium (International) on Combustion Mertens, J. D., Dean, A. J., Hanson, R. K., Bowman, C. T. 1992: 701–710

  View details for DOI 10.1016/S0082-0784(06)80086-X

• A Shock Tube Study of the Reaction of CN and NCO with NO2 Twenty-Fifth Symposium (International) on Combustion Wooldridge, S. T., Mertens, J. D., Hanson, R. K., Bowman, C. T. 1994: 983–991

  View details for DOI 10.1016/S0082-0784(06)80735-6

• Combustion diagnostics: Planar imaging techniques Twenty-First Symposuim (International) on Combustion Hanson, R. K. 1988: 1677–1680, IN5–IN8, 1681–1691

  View details for DOI 10.1016/S0082-0784(88)80401-6