Mark A. Cappelli's Profile | Stanford Profiles

Reconfigurable plasma-dielectric hybrid photonic crystal as a platform for electromagnetic wave manipulation and computing PHYSICS OF PLASMAS Wang, B., Rodriguez, J. A., Miller, O., Cappelli, M. A. 2021; 28 (4)

View details for DOI 10.1063/5.0043336

View details for Web of Science ID 000639389300001

Interpenetration and kinetic effects in converging, high-energy plasma jets HIGH ENERGY DENSITY PHYSICS Riedel, W., Meezan, N., Higginson, D., Hohenberger, M., Owen, J., Cappelli, M. 2020; 37

View details for DOI 10.1016/j.hedp.2020.100861

View details for Web of Science ID 000596566500008

A tunable double negative device consisting of a plasma array and a negative-permeability metamaterial PHYSICS OF PLASMAS Iwai, A., Righetti, F., Wang, B., Sakai, O., Cappelli, M. A. 2020; 27 (2)

View details for DOI 10.1063/1.5112077

View details for Web of Science ID 000518030700001

Schlieren diagnostic for cinematic visualization of dense plasma jets at Alfvenic timescales EXPERIMENTS IN FLUIDS Underwood, T. C., Loebner, K. K., Miller, V. A., Cappelli, M. A. 2020; 61 (1)

View details for DOI 10.1007/s00348-019-2848-5

View details for Web of Science ID 000501312800005

Ion plume investigation of a Hall effect thruster operating with Xe/N-2 and Xe/air mixtures JOURNAL OF PHYSICS D-APPLIED PHYSICS Gurciullo, A., Fabris, A., Cappelli, M. A. 2019; 52 (46)

View details for DOI 10.1088/1361-6463/ab36c5

View details for Web of Science ID 000484237900003

Effects of flow collisionality on ELM replication in plasma guns FUSION ENGINEERING AND DESIGN Underwood, T. C., Subramaniam, V., Riedel, W. M., Raja, L. L., Cappelli, M. A. 2019; 144: 97–106

View details for DOI 10.1016/j.fusengdes.2019.04.088

View details for Web of Science ID 000488300500014

Broadband cw-terahertz spectroscopy for characterizing reactive plasmas JOURNAL OF PHYSICS D-APPLIED PHYSICS Ouarasi, K., Righetti, F., Cappelli, M. A. 2019; 52 (19)

View details for DOI 10.1088/1361-6463/ab085e

View details for Web of Science ID 000460449400002

Electron number density measurements from the frequency shift of a plasma defect state in a one-dimensional photonic crystal EUROPEAN PHYSICAL JOURNAL D Pai, D. Z., Righetti, F., Wang, B. C., Biggs, D. R., Cappelli, M. A. 2019; 73 (5)

View details for DOI 10.1140/epjd/e2019-90617-y

View details for Web of Science ID 000467644000005

Dynamic formation of stable current-driven plasma jets. Scientific reports Underwood, T. C., Loebner, K. T., Miller, V. A., Cappelli, M. A. 2019; 9 (1): 2588

Abstract

Instabilities play a prominent role in determining the inherent structure and properties of magnetized plasma jets spanning both laboratory and astrophysical settings. The manner in which prominent unstable modes dynamically evolve remains key to understanding plasma behavior and control. In astrophysical phenomena, self-similar jets are observed to propagate over vast distances while avoiding breakup caused by unstable mode growth. However, the production of stable dense plasma jets in the laboratory has been limited by the onset of unstable modes that restrict jet lifetime, collimation, and scalability. In this work, we visualize the formation of stable laboratory-generated, dense, super-magnetosonic plasma jets in real time, and we identify an underlying mechanism that contributes to this behavior. The current-driven plasma jets generated in our experiments form a flowing Z-pinch, which is generally unstable to the m=1 kink instability. Our results indicate that a stable dense plasma jet can be maintained for timescales over which a steady pinch current can be sustained, even at levels which would otherwise lead to rapid unstable mode growth and resultant pinch disassembly.

View details for PubMedID 30796311

Millimeter wave control using a plasma filled photonic crystal resonator JOURNAL OF PHYSICS D-APPLIED PHYSICS Biggs, D. R., Marcovati, A., Cappelli, M. A. 2019; 52 (5)

View details for DOI 10.1088/1361-6463/aaee3d

View details for Web of Science ID 000451045200002

Laser-produced gaseous plasmonic resonators PHYSICS OF PLASMAS Quinones, R., Underwood, T. C., Cappelli, M. A. 2018; 25 (11)

View details for DOI 10.1063/1.5054022

View details for Web of Science ID 000451734600046

Predictive modeling of plasmas for gaseous plasmonics PLASMA SOURCES SCIENCE & TECHNOLOGY Biggs, D. R., Underwood, T. C., Cappelli, M. A. 2018; 27 (7)

View details for DOI 10.1088/1361-6595/aacd70

View details for Web of Science ID 000437840800001

Computational and experimental investigation of plasma deflagration jets and detonation shocks in coaxial plasma accelerators PLASMA SOURCES SCIENCE & TECHNOLOGY Subramaniam, V., Underwood, T. C., Raja, L. L., Cappelli, M. A. 2018; 27 (2)

View details for DOI 10.1088/1361-6595/aaabec

View details for Web of Science ID 000425980600002

Plasma flow reactor for steady state monitoring of physical and chemical processes at high temperatures REVIEW OF SCIENTIFIC INSTRUMENTS Koroglu, B., Mehl, M., Armstrong, M. R., Crowhurst, J. C., Weisz, D. G., Zaug, J. M., Dai, Z., Radousky, H. B., Chernov, A., Ramon, E., Stavrou, E., Knight, K., Fabris, A. L., Cappelli, M. A., Rose, T. P. 2017; 88 (9): 093506

Abstract

We present the development of a steady state plasma flow reactor to investigate gas phase physical and chemical processes that occur at high temperature (1000 < T < 5000 K) and atmospheric pressure. The reactor consists of a glass tube that is attached to an inductively coupled argon plasma generator via an adaptor (ring flow injector). We have modeled the system using computational fluid dynamics simulations that are bounded by measured temperatures. In situ line-of-sight optical emission and absorption spectroscopy have been used to determine the structures and concentrations of molecules formed during rapid cooling of reactants after they pass through the plasma. Emission spectroscopy also enables us to determine the temperatures at which these dynamic processes occur. A sample collection probe inserted from the open end of the reactor is used to collect condensed materials and analyze them ex situ using electron microscopy. The preliminary results of two separate investigations involving the condensation of metal oxides and chemical kinetics of high-temperature gas reactions are discussed.

View details for PubMedID 28964176

Low-Mass RF Power Inverter for CubeSat Applications Using 3-D Printed Inductors IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS Liang, W., Raymond, L., Praglin, M., Biggs, D., Righetti, F., Cappelli, M., Holman, B., Davila, J. R. 2017; 5 (2): 880-890

View details for DOI 10.1109/JESTPE.2016.2644644

View details for Web of Science ID 000400896000026

A plasma deflagration accelerator as a platform for laboratory astrophysics HIGH ENERGY DENSITY PHYSICS Underwood, T. C., Loebner, K. K., Cappelli, M. A. 2017; 23: 73–80

View details for DOI 10.1016/j.hedp.2017.03.004

View details for Web of Science ID 000404314500009

Experimental validation of tunable features in laser-induced plasma resonators Quinones, R., Cappelli, M. A., Engheta, N., Noginov, M. A., Zheludev, N. I. SPIE-INT SOC OPTICAL ENGINEERING. 2017

View details for DOI 10.1117/12.2276971

View details for Web of Science ID 000416302400002

Tunable microwave pulse generation using discharge plasmas APPLIED PHYSICS LETTERS Biggs, D. R., Cappelli, M. A. 2016; 109 (12)

View details for DOI 10.1063/1.4963268

View details for Web of Science ID 000384558700072

Damage Morphologies in Targets Exposed to a New Plasma Deflagration Accelerator for ELM Simulation IEEE TRANSACTIONS ON PLASMA SCIENCE Loebner, K. T., Underwood, T. C., Wang, B. C., Cappelli, M. A. 2016; 44 (9): 1534-1540

View details for DOI 10.1109/TPS.2016.2565508

View details for Web of Science ID 000384231500011

Waveguiding and bending modes in a plasma photonic crystal bandgap device AIP ADVANCES Wang, B., Cappelli, M. A. 2016; 6 (6)

View details for DOI 10.1063/1.4954668

View details for Web of Science ID 000379041400015

A plasma photonic crystal bandgap device APPLIED PHYSICS LETTERS Wang, B., Cappelli, M. A. 2016; 108 (16)

View details for DOI 10.1063/1.4946805

View details for Web of Science ID 000375053000001

Radial magnetic compression in the expelled jet of a plasma deflagration accelerator APPLIED PHYSICS LETTERS Loebner, K. T., Underwood, T. C., Mouratidis, T., Cappelli, M. A. 2016; 108 (9)

View details for DOI 10.1063/1.4943370

View details for Web of Science ID 000375329200065

PLASMA PHOTONIC CRYSTALS WITH TUNABLE BANDGAP AND CONFIGURABLE TRANSMISSION MODES Wang, B., Cappelli, M., IEEE IEEE. 2016

View details for Web of Science ID 000391073600412

Low mass RF power inverter for cubesat plasma thruster using 3D printed inductors Liang, W., Raymond, L., Praglin, M., Biggs, D., Righetti, F., Cappelli, M., Holman, B., Davila, J., IEEE IEEE. 2016

View details for Web of Science ID 000389467400093

A TUNABLE MICROSTRIP PHOTONIC CRYSTAL BANDGAP DEVICE WITH PLASMA ELEMENTS Wang, B., Cappelli, M., IEEE IEEE. 2016

View details for Web of Science ID 000391073600264

ON THE USE OF PLASMA METASURFACES AS TUNABLE THZ WAVE REFLECTORS Quinones, R., Underwood, T. C., Cappelli, M. A., IEEE IEEE. 2016

View details for Web of Science ID 000391073600374

GENERATING MICROWAVE PULSES WITH PLASMA Biggs, D., Cappelli, M., IEEE IEEE. 2016

View details for Web of Science ID 000391073600409

Time-resolved laser-induced fluorescence measurement of ion and neutral dynamics in a Hall thruster during ionization oscillations JOURNAL OF APPLIED PHYSICS Fabris, A. L., Young, C. V., Cappelli, M. A. 2015; 118 (23)

View details for DOI 10.1063/1.4937272

View details for Web of Science ID 000367376600013

A zero-equation turbulence model for two-dimensional hybrid Hall thruster simulations PHYSICS OF PLASMAS Cappelli, M. A., Young, C. V., Cha, E., Fernandez, E. 2015; 22 (11)

View details for DOI 10.1063/1.4935891

View details for Web of Science ID 000366054900095

A tunable microwave plasma photonic crystal filter APPLIED PHYSICS LETTERS Wang, B., Cappelli, M. A. 2015; 107 (17)

View details for DOI 10.1063/1.4934886

View details for Web of Science ID 000364234200007

Evidence of Branching Phenomena in Current-Driven Ionization Waves. Physical review letters Loebner, K. T., Underwood, T. C., Cappelli, M. A. 2015; 115 (17): 175001

Abstract

This Letter reports the first fully consistent experimental observations of current-driven ionization waves conforming to the magnetohydrodynamic Rankine-Hugoniot model for hydromagnetic shocks. Detailed measurements of the thermodynamic and electrodynamic plasma state variables across the ionization region confirm the existence of two types of waves, corresponding to the upper and lower solution branches of the Hugoniot curve. These waves are generated by pulsed currents in a coaxial gas-fed plasma accelerator. The coupling between the state variables of this complex, transient, three-dimensional system shows a remarkable quantitative agreement of less than 8% deviation from the quasisteady, one-dimensional theoretical model.

View details for DOI 10.1103/PhysRevLett.115.175001

View details for PubMedID 26551118

Evidence of Branching Phenomena in Current-Driven Ionization Waves PHYSICAL REVIEW LETTERS Loebner, K. T., Underwood, T. C., Cappelli, M. A. 2015; 115 (17)

Abstract

This Letter reports the first fully consistent experimental observations of current-driven ionization waves conforming to the magnetohydrodynamic Rankine-Hugoniot model for hydromagnetic shocks. Detailed measurements of the thermodynamic and electrodynamic plasma state variables across the ionization region confirm the existence of two types of waves, corresponding to the upper and lower solution branches of the Hugoniot curve. These waves are generated by pulsed currents in a coaxial gas-fed plasma accelerator. The coupling between the state variables of this complex, transient, three-dimensional system shows a remarkable quantitative agreement of less than 8% deviation from the quasisteady, one-dimensional theoretical model.

View details for DOI 10.1103/PhysRevLett.115.175001

View details for Web of Science ID 000363016600002

Excited state population dynamics of a xenon ac discharge PLASMA SOURCES SCIENCE & TECHNOLOGY Fabris, A. L., Young, C. V., Cappelli, M. A. 2015; 24 (5)

View details for DOI 10.1088/0963-0252/24/5/055013

View details for Web of Science ID 000364336600022

Numerical studies of nitric oxide formation in nanosecond-pulsed discharge-stabilized flames of premixed methane/air. Philosophical transactions. Series A, Mathematical, physical, and engineering sciences Bak, M. S., Cappelli, M. A. 2015; 373 (2048)

Abstract

A simulation is developed to investigate the kinetics of nitric oxide (NO) formation in premixed methane/air combustion stabilized by nanosecond-pulsed discharges. The simulation consists of two connected parts. The first part calculates the kinetics within the discharge while considering both plasma/combustion reactions and species diffusion, advection and thermal conduction to the surrounding flow. The second part calculates the kinetics of the overall flow after mixing the discharge flow with the surrounding flow to account for the effect that the discharge has on the overall kinetics. The simulation reveals that the discharge produces a significant amount of atomic oxygen (O) as a result of the high discharge temperature and dissociative quenching of excited state nitrogen by molecular oxygen. This atomic oxygen subsequently produces hydroxyl (OH) radicals. The fractions of these O and OH then undergo Zel'dovich reactions and are found to contribute to as much as 73% of the total NO that is produced. The post-discharge simulation shows that the NO survives within the flow once produced.

View details for DOI 10.1098/rsta.2014.0331

View details for PubMedID 26170428

Self-organization in planar magnetron microdischarge plasmas APPLIED PHYSICS LETTERS Ito, T., Young, C. V., Cappelli, M. A. 2015; 106 (25)

View details for DOI 10.1063/1.4922898

View details for Web of Science ID 000357036600045

Successive laser ablation ignition of premixed methane/air mixtures OPTICS EXPRESS Bak, M. S., Cappelli, M. A. 2015; 23 (11): A419-A427

Abstract

Laser ablation has been used to study successive ignition in premixed methane/air mixtures under conditions in which the flow speed leads to flame blow-out. A range of laser pulse frequencies is experimentally mimicked by varying the time interval between two closely spaced laser pulses. Emission intensities from the laser ablation kernels are measured to qualitatively estimate laser energy coupling, and flame CH* chemiluminescence is recorded in a time-resolved manner to capture the flame evolution and propagation. A comparison of the measurements is made between the two successive breakdown ignition events. It is found that the formation of the subsequent ablation kernel is almost independent of the previous one, however, for the successive breakdowns, the first breakdown and its ensuing combustion created temporal regions of no energy coupling as they heat the gas and lower the density. Flame imaging shows that the second ablation event successfully produces another flame kernel and is capable of holding the flame-base even at pulse intervals where the second laser pulse cannot form a breakdown. This study demonstrates that successive ablation ignition can allow for the use of higher laser frequencies and enhanced flame stabilization than successive breakdown ignition.

View details for DOI 10.1364/OE.23.00A419

View details for Web of Science ID 000356902400002

View details for PubMedID 26072866

A fast rise-rate, adjustable-mass-bit gas puff valve for energetic pulsed plasma experiments. Review of scientific instruments Loebner, K. T., Underwood, T. C., Cappelli, M. A. 2015; 86 (6): 063503-?

Abstract

A fast rise-rate, variable mass-bit gas puff valve based on the diamagnetic repulsion principle was designed, built, and experimentally characterized. The ability to hold the pressure rise-rate nearly constant while varying the total overall mass bit was achieved via a movable mechanical restrictor that is accessible while the valve is assembled and pressurized. The rise-rates and mass-bits were measured via piezoelectric pressure transducers for plenum pressures between 10 and 40 psig and restrictor positions of 0.02-1.33 cm from the bottom of the linear restrictor travel. The mass-bits were found to vary linearly with the restrictor position at a given plenum pressure, while rise-rates varied linearly with plenum pressure but exhibited low variation over the range of possible restrictor positions. The ability to change the operating regime of a pulsed coaxial plasma deflagration accelerator by means of altering the valve parameters is demonstrated.

View details for DOI 10.1063/1.4922522

View details for PubMedID 26133835

A fast rise-rate, adjustable-mass-bit gas puff valve for energetic pulsed plasma experiments. Review of scientific instruments Loebner, K. T., Underwood, T. C., Cappelli, M. A. 2015; 86 (6): 063503-?

Abstract

A fast rise-rate, variable mass-bit gas puff valve based on the diamagnetic repulsion principle was designed, built, and experimentally characterized. The ability to hold the pressure rise-rate nearly constant while varying the total overall mass bit was achieved via a movable mechanical restrictor that is accessible while the valve is assembled and pressurized. The rise-rates and mass-bits were measured via piezoelectric pressure transducers for plenum pressures between 10 and 40 psig and restrictor positions of 0.02-1.33 cm from the bottom of the linear restrictor travel. The mass-bits were found to vary linearly with the restrictor position at a given plenum pressure, while rise-rates varied linearly with plenum pressure but exhibited low variation over the range of possible restrictor positions. The ability to change the operating regime of a pulsed coaxial plasma deflagration accelerator by means of altering the valve parameters is demonstrated.

View details for DOI 10.1063/1.4922522

View details for PubMedID 26133835

A Reduced Set of Air Plasma Reactions for Nanosecond Pulsed Plasmas IEEE TRANSACTIONS ON PLASMA SCIENCE Bak, M. S., Cappelli, M. A. 2015; 43 (4): 995-1001

View details for DOI 10.1109/TPS.2015.2409300

View details for Web of Science ID 000353113700010

Nanosecond-Pulsed Discharge Plasma Splitting of Carbon Dioxide IEEE TRANSACTIONS ON PLASMA SCIENCE Bak, M. S., Im, S., Cappelli, M. 2015; 43 (4): 1002-1007

View details for DOI 10.1109/TPS.2015.2408344

View details for Web of Science ID 000353113700011

Ion dynamics in an E x B Hall plasma accelerator APPLIED PHYSICS LETTERS Young, C. V., Fabris, A. L., Cappelli, M. A. 2015; 106 (4)

View details for DOI 10.1063/1.4907283

View details for Web of Science ID 000348996200080

A 2-D Hybrid Hall Thruster Simulation That Resolves the E x B Electron Drift Direction IEEE TRANSACTIONS ON PLASMA SCIENCE Lam, C. M., Fernandez, E., Cappelli, M. A. 2015; 43 (1): 86-94

View details for DOI 10.1109/TPS.2014.2356650

View details for Web of Science ID 000347786300010

Ion Velocimetry Measurements and Particle-In-Cell Simulation of a Cylindrical Cusped Plasma Accelerator IEEE TRANSACTIONS ON PLASMA SCIENCE Fabris, A. L., Young, C. V., Manente, M., Pavarin, D., Cappelli, M. A. 2015; 43 (1): 54-63

View details for DOI 10.1109/TPS.2014.2321743

View details for Web of Science ID 000347786300007

Implementation of an Entropy Closure Model for 2-D Hybrid Hall Thruster Simulations IEEE TRANSACTIONS ON PLASMA SCIENCE Cha, E., Cappelli, M. A., Fernandez, E. 2015; 43 (1): 5-11

View details for DOI 10.1109/TPS.2014.2304852

View details for Web of Science ID 000347786300002

High-Velocity Neutral Plasma Jet Formed by Dense Plasma Deflagration IEEE TRANSACTIONS ON PLASMA SCIENCE Loebner, K. T., Wang, B. C., Poehlmann, F. R., Watanabe, Y., Cappelli, M. A. 2014; 42 (10): 2500-2501

View details for DOI 10.1109/TPS.2014.2332467

View details for Web of Science ID 000344548300088

Successive laser-induced breakdowns in atmospheric pressure air and premixed ethane-air mixtures COMBUSTION AND FLAME Bak, M. S., Im, S., Cappelli, M. A. 2014; 161 (7): 1744-1751

View details for DOI 10.1016/j.combustflame.2013.12.029

View details for Web of Science ID 000337200700007

Time-synchronized continuous wave laser-induced fluorescence axial velocity measurements in a diverging cusped field thruster JOURNAL OF PHYSICS D-APPLIED PHYSICS MacDonald, N. A., Cappelli, M. A., Hargus, W. A. 2014; 47 (11)

View details for DOI 10.1088/0022-3727/47/11/115204

View details for Web of Science ID 000332761800008

Experiments and simulations of an atmospheric pressure lossy dielectric barrier Townsend discharge JOURNAL OF PHYSICS D-APPLIED PHYSICS Im, S., Bak, M. S., Hwang, N., Cappelli, M. A. 2014; 47 (8)

View details for DOI 10.1088/0022-3727/47/8/085202

View details for Web of Science ID 000331902900012

Dielectric Barrier Discharge-Induced Vortex Generation With Discharge-Actuated Boundary Layer Bleed IEEE TRANSACTIONS ON PLASMA SCIENCE Im, S., Bak, M. S., Mungal, M. G., Cappelli, M. A. 2013; 41 (12): 3245-3253

View details for DOI 10.1109/TPS.2013.2278027

View details for Web of Science ID 000328701100009

Induced Flow and Optical Emission Generated by a Pulsed 13.56 MHz-5 kHz Plasma Actuator IEEE TRANSACTIONS ON PLASMA SCIENCE Dedrick, J., Im, S., Cappelli, M., Boswell, R. W., Charles, C. 2013; 41 (12): 3275-3278

View details for DOI 10.1109/TPS.2013.2279879

View details for Web of Science ID 000328701100012

Plasma Actuator Control of a Lifted Ethane Turbulent Jet Diffusion Flame IEEE TRANSACTIONS ON PLASMA SCIENCE Im, S., Bak, M. S., Mungal, M. G., Cappelli, M. A. 2013; 41 (12): 3293-3298

View details for DOI 10.1109/TPS.2013.2277722

View details for Web of Science ID 000328701100015

Studies on the stability limit extension of premixed and jet diffusion flames of methane, ethane, and propane using nanosecond repetitive pulsed discharge plasmas COMBUSTION AND FLAME Bak, M. S., Im, S., Mungal, M. G., Cappelli, M. A. 2013; 160 (11): 2396-2403

View details for DOI 10.1016/j.combustflame.2013.05.023

View details for Web of Science ID 000324006400010

A study of flow induced by laser induced breakdown-enhanced dielectric barrier discharges in air APPLIED PHYSICS LETTERS Im, S., Bak, M. S., Cappelli, M. A. 2013; 103 (16)

View details for DOI 10.1063/1.4825373

View details for Web of Science ID 000326148700101

Surface discharge plasma actuator driven by a pulsed 13.56 MHz-5 kHz voltage waveform JOURNAL OF PHYSICS D-APPLIED PHYSICS Dedrick, J., Im, S., Cappelli, M. A., Boswell, R. W., Charles, C. 2013; 46 (40)

View details for DOI 10.1088/0022-3727/46/40/405201

View details for Web of Science ID 000324861100014

A Thomson-type mass and energy spectrometer for characterizing ion energy distributions in a coaxial plasma gun operating in a gas-puff mode PHYSICS OF PLASMAS Rieker, G. B., Poehlmann, F. R., Cappelli, M. A. 2013; 20 (7)

View details for DOI 10.1063/1.4816028

View details for Web of Science ID 000322535400063

Simulations of nanosecond-pulsed dielectric barrier discharges in atmospheric pressure air JOURNAL OF APPLIED PHYSICS Bak, M. S., Cappelli, M. A. 2013; 113 (11)

View details for DOI 10.1063/1.4795269

View details for Web of Science ID 000316545200011

Surface discharge plasma actuator driven by a pulsed 13.56 MHz–5 kHz voltage waveform Journal of Physics D: Applied Physics Dedrick, J., Im, S., Cappelli, M. A., Boswell, R. W., Charles, C. 2013; 46 (40): 405201

View details for DOI 10.1088/0022-3727/46/40/405201

Plasma Actuator Control of a Lifted Ethane Turbulent Jet Diffusion Flame Plasma Science, IEEE Transactions on Im, S. K., Bak, M. S., Mungal, M. G., Cappelli, M. A. 2013; 41 (12): 3293 - 3298

View details for DOI 10.1109/TPS.2013.2277722

Dielectric Barrier Discharge-Induced Vortex Generation With Discharge-Actuated Boundary Layer Bleed Plasma Science, IEEE Transactions on Im, S., Bak, M. S., Mungal, M., G., Cappelli, M., A. 2013; 41 (12): 3245 - 3253

View details for DOI 10.1109/TPS.2013.2278027

The manipulation of an unstarting supersonic flow by plasma actuator JOURNAL OF PHYSICS D-APPLIED PHYSICS Im, S., Do, H., Cappelli, M. A. 2012; 45 (48)

View details for DOI 10.1088/0022-3727/45/48/485202

View details for Web of Science ID 000311148300009

Optically pumped cesium plasma neutralization of space charge in photon-enhanced thermionic energy converters APPLIED PHYSICS LETTERS Ito, T., Cappelli, M. A. 2012; 101 (21)

View details for DOI 10.1063/1.4767349

View details for Web of Science ID 000311477600075

Time-synchronized continuous wave laser-induced fluorescence on an oscillatory xenon discharge REVIEW OF SCIENTIFIC INSTRUMENTS MacDonald, N. A., Cappelli, M. A., Hargus, W. A. 2012; 83 (11)

Abstract

A novel approach to time-synchronizing laser-induced fluorescence measurements to an oscillating current in a 60 Hz xenon discharge lamp using a continuous wave laser is presented. A sample-hold circuit is implemented to separate out signals at different phases along a current cycle, and is followed by a lock-in amplifier to pull out the resulting time-synchronized fluorescence trace from the large background signal. The time evolution of lower state population is derived from the changes in intensity of the fluorescence excitation line shape resulting from laser-induced fluorescence measurements of the 6s(')[1/2](1)(0)-6p(')[3/2](2) xenon atomic transition at λ = 834.68 nm. Results show that the lower state population oscillates at twice the frequency of the discharge current, 120 Hz.

View details for DOI 10.1063/1.4766958

View details for Web of Science ID 000312034400018

View details for PubMedID 23206061

Plasma-assisted stabilization of laminar premixed methane/air flames around the lean flammability limit COMBUSTION AND FLAME Bak, M. S., Do, H., Mungal, M. G., Cappelli, M. A. 2012; 159 (10): 3128-3137

View details for DOI 10.1016/j.combustflame.2012.03.023

View details for Web of Science ID 000308619100013

Dielectric barrier discharge induced boundary layer suction APPLIED PHYSICS LETTERS Im, S., Cappelli, M. A. 2012; 100 (26)

View details for DOI 10.1063/1.4731288

View details for Web of Science ID 000305831500108

Ion velocity and plasma potential measurements of a cylindrical cusped field thruster JOURNAL OF APPLIED PHYSICS MacDonald, N. A., Young, C. V., Cappelli, M. A., Hargus, W. A. 2012; 111 (9)

View details for DOI 10.1063/1.4707953

View details for Web of Science ID 000304109900016

Nanoparticle production in arc generated fireballs of granular silicon powder AIP ADVANCES Ito, T., Cappelli, M. A. 2012; 2 (1)

View details for DOI 10.1063/1.3681283

View details for Web of Science ID 000302225400044

A Simulation of the Effects of Varying Repetition Rate and Pulse Width of Nanosecond Discharges on Premixed Lean Methane-Air Combustion Journal of Combustion Bak, M. S., Cappelli, M. A. 2012; 2012: 11

View details for DOI 10.1155/2012/137653

Experimental Study and Plasma Control of an Unstarting Supersonic Flow 6th AIAA Flow Control Conference Im, S., Do, H., Mungal, M. G., Cappelli, M. A. 2012

View details for DOI 10.2514/6.2012-2809

Electric Field Measurements in Gases Using Cavity Enhanced Polarimetry 50th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition Rath, J., Franka, I., Lee, B., Hagen, C., Yalin, A., Cappelli, M. A. 2012

View details for DOI 10.2514/6.2012-988

Separation Control Using Dielectric Barrier Discharge-Induced Suction and Vortex Generation 6TH AIAA FLOW CONTROL CONFERENCE Bak, M. S., Mungal, M. G., Cappelli, M. A. 2012

View details for DOI 10.2514/6.2012-2947

Experimental Study of Plasma Control of an Unstarting Supersonic Flow 6th AIAA Flow Control Conference Im, S., Do, H., Cappelli, M. A. 2012

View details for DOI 10.2514/6.2012-2809

The Structure of Nanosecond Repetitively Pulsed Spark Discharges in Air IEEE TRANSACTIONS ON PLASMA SCIENCE Pai, D. Z., Cappelli, M. A., Laux, C. O. 2011; 39 (11): 2258-2259

View details for DOI 10.1109/TPS.2011.2160656

View details for Web of Science ID 000299683400102

The influence of boundary layers on supersonic inlet flow unstart induced by mass injection EXPERIMENTS IN FLUIDS Do, H., Im, S., Mungal, M. G., Cappelli, M. A. 2011; 51 (3): 679-691

View details for DOI 10.1007/s00348-011-1077-3

View details for Web of Science ID 000294347800009

Laser-induced fluorescence velocity measurements of a diverging cusped-field thruster JOURNAL OF PHYSICS D-APPLIED PHYSICS MacDonald, N. A., Cappelli, M. A., Gildea, S. R., Martinez-Sanchez, M., Hargus, W. A. 2011; 44 (29)

View details for DOI 10.1088/0022-3727/44/29/295203

View details for Web of Science ID 000292383000011

Visualizing supersonic inlet duct unstart using planar laser Rayleigh scattering EXPERIMENTS IN FLUIDS Do, H., Im, S., Mungal, M. G., Cappelli, M. A. 2011; 50 (6): 1651-1657

View details for DOI 10.1007/s00348-010-1028-4

View details for Web of Science ID 000291042300014

On the quenching of excited electronic states of molecular nitrogen in nanosecond pulsed discharges in atmospheric pressure air APPLIED PHYSICS LETTERS Bak, M. S., Kim, W., Cappelli, M. A. 2011; 98 (1)

View details for DOI 10.1063/1.3535986

View details for Web of Science ID 000286009800014

Laser-Induced Fluorescence Velocity Measurements of a Diverging Cusped Field Thruster Journal of Physics D: Applied Physics MacDonald, N. A., Cappelli, M. A., Gildea, S. R., Martínez-Sánchez, M., Hargus, W. A. 2011; 44 (29)

View details for DOI 10.1088/0022-3727/44/29/295203

The Influence of Boundary Layers on Supersonic Inlet Unstart 17th AIAA International Space Planes and Hypersonic Systems and Technologies Conference Do, H., Im, S., Mungal, M. G., Cappelli, M. A. 2011

View details for DOI 10.2514/6.2011-2349

Unstart of a Supersonic Model Inlet/Isolator Flow Induced by Mass Injection 49th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition Do, H., Im, S., Mungal, M. G., Cappelli, M. A. 2011

View details for DOI 10.2514/6.2011-68

Quenching of Excited Electronic States of Molecular Nitrogen in Nanosecond Pulsed Discharges in Atmospheric Pressure Air 49th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition Bak, M., Kim, W., Cappelli, M. A. 2011

View details for DOI 10.2514/6.2011-1150

Plasma Control of a Turbulent Boundary Layer in an Unstarting Supersonic Flow 49th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition Im, S., Do, H., Cappelli, M. 2011

View details for DOI 10.2514/6.2011-1143

Plasma Control of an Unstarting Supersonic Flow 17th AIAA International Space Planes and Hypersonic Systems and Technologies Conference Im, S., Do, H., Cappelli, M. A. 2011

View details for DOI 10.2514/6.2011-2360

Experimental and Computational Investigation of Mass Injection Induced Unstart 29th AIAA Applied Aerodynamics Conference Fike, J., Duraisamy, K., Alonso, J., Do, H., Im, S., Cappelli, M. A. 2011

View details for DOI 10.2514/6.2011-3192

Plasma assisted flame ignition of supersonic flows over a flat wall COMBUSTION AND FLAME Do, H., Im, S., Cappelli, M. A., Mungal, M. G. 2010; 157 (12): 2298-2305

View details for DOI 10.1016/j.combustflame.2010.07.006

View details for Web of Science ID 000283967300009

Current distribution measurements inside an electromagnetic plasma gun operated in a gas-puff mode PHYSICS OF PLASMAS Poehlmann, F. R., Cappelli, M. A., Rieker, G. B. 2010; 17 (12)

Abstract

Measurements are presented of the time-dependent current distribution inside a coaxial electromagnetic plasma gun. The measurements are carried out using an array of six axially distributed dual-Rogowski coils in a balanced circuit configuration. The radial current distributions indicate that operation in the gas-puff mode, i.e., the mode in which the electrode voltage is applied before injection of the gas, results in a stationary ionization front consistent with the presence of a plasma deflagration. The effects of varying the bank capacitance, transmission line inductance, and applied electrode voltage were studied over the range from 14 to 112 μF, 50 to 200 nH, and 1 to 3 kV, respectively.

View details for DOI 10.1063/1.3526603

View details for Web of Science ID 000285770500069

View details for PubMedCentralID PMC3026009

Plasma assisted cavity flame ignition in supersonic flows COMBUSTION AND FLAME Do, H., Cappelli, M. A., Mungal, M. G. 2010; 157 (9): 1783-1794

View details for DOI 10.1016/j.combustflame.2010.03.009

View details for Web of Science ID 000280267700015

On the role of fluctuations, cathode placement, and collisions on the transport of electrons in the near-field of Hall thrusters PHYSICS OF PLASMAS Smith, A. W., Cappelli, M. A. 2010; 17 (9)

View details for DOI 10.1063/1.3479827

View details for Web of Science ID 000282439300032

Dielectric barrier discharge control of a turbulent boundary layer in a supersonic flow APPLIED PHYSICS LETTERS Im, S., Do, H., Cappelli, M. A. 2010; 97 (4)

View details for DOI 10.1063/1.3473820

View details for Web of Science ID 000281059200020

Single particle simulations of electron transport in the near-field of Hall thrusters JOURNAL OF PHYSICS D-APPLIED PHYSICS Smith, A. W., Cappelli, M. A. 2010; 43 (4)

View details for DOI 10.1088/0022-3727/43/4/045203

View details for Web of Science ID 000273551300009

The role of in situ reforming in plasma enhanced ultra lean premixed methane/air flames COMBUSTION AND FLAME Kim, W., Mungal, M. G., Cappelli, M. A. 2010; 157 (2): 374-383

View details for DOI 10.1016/j.combustflame.2009.06.016

View details for Web of Science ID 000273702400018

Ion Velocity Distribution in a Low-Power Cylindrical Hall Thruster 46TH AIAA/ASME/SAE/ASEE JOINT PROPULSION CONFERENCE & EXHIBIT MacDonald, N. A., Cappelli, M. A., Hargus Jr, W. A. 2010

View details for DOI 10.2514/6.2010-7103

Plasma-Assisted Flame Holding in Subsonic and Supersonic Flows 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition Kim, W., Do, H., Cappelli, M. A., Mungal, M. G. 2010

View details for DOI 10.2514/6.2010-263

Plasma Assisted Flame Holding in Subsonic and Supersonic Flows 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition Kim, W., Do, H., Cappelli, M., Mungal, M. 2010

View details for DOI 10.2514/6.2010-263

Structure of laboratory ball lightning PHYSICAL REVIEW E Ito, T., Tamura, T., Cappelli, M. A., Hamaguchi, S. 2009; 80 (6)

Abstract

Trajectories of self-sustained laboratory ball lightning, generated by arc discharges with silicon, are investigated for understanding the possibility of buoyant flight. Extremely low apparent densities are found, nearly approaching that of standard air. The freely buoyant balls are observed to survive for about 0.1 s, with significantly buoyant balls surviving for several seconds. These ball lightning objects are found to have a density and size that can easily allow them to be carried by a gentle breeze of a few meters per second. The results are interpreted by a model that is an extension of that first proposed by Abrahamson and Dinniss [J. Abrahamson and J. Dinniss, Nature (London) 403, 519 (2000)]. The buoyant behavior of ball lightning seen in our experiments is believed to arise as a result of the formation of a nanoparticle oxide network growing from a molten silicon core.

View details for DOI 10.1103/PhysRevE.80.067401

View details for Web of Science ID 000273228000094

View details for PubMedID 20365306

Energetic neutrals in the cathode sheath of argon direct-current discharges JOURNAL OF APPLIED PHYSICS Ito, T., Cappelli, M. A. 2009; 106 (2)

View details for DOI 10.1063/1.3160329

View details for Web of Science ID 000268613000020

Time and space-correlated plasma potential measurements in the near field of a coaxial Hall plasma discharge PHYSICS OF PLASMAS Smith, A. W., Cappelli, M. A. 2009; 16 (7)

View details for DOI 10.1063/1.3155097

View details for Web of Science ID 000268615200058

Electrostatic probe disruption of drift waves in magnetized microdischarges APPLIED PHYSICS LETTERS Ito, T., Cappelli, M. A. 2009; 94 (21)

View details for DOI 10.1063/1.3132587

View details for Web of Science ID 000266500400009

The Hall effect and rocket flight PHYSICS TODAY Cappelli, M. 2009; 62 (4): 76-77

View details for Web of Science ID 000264991800022

Preliminary Characterization of a Diverging Cusped Field (DCF) Thruster 31st International Electric Propulsion Conference Young, C., Smith, A., Cappelli, M. 2009

View details for DOI 10.13140/2.1.2644.5123

A Study of Plasma-Stabilized Diffusion Flames at Elevated Ambient Temperatures IEEE TRANSACTIONS ON PLASMA SCIENCE Kim, W., Do, H., Mungal, M. G., Cappelli, M. A. 2008; 36 (6): 2898-2904

View details for DOI 10.1109/TPS.2008.2004345

View details for Web of Science ID 000262061900004

Jet Flame Ignition in a Supersonic Crossflow Using a Pulsed Nonequilibrium Plasma Discharge IEEE TRANSACTIONS ON PLASMA SCIENCE Do, H., Mungal, M. G., Cappelli, M. A. 2008; 36 (6): 2918-2923

View details for DOI 10.1109/TPS.2008.2005986

View details for Web of Science ID 000262061900007

Shear-Based Model for Electron Transport in Hybrid Hall Thruster Simulations IEEE TRANSACTIONS ON PLASMA SCIENCE Scharfe, M. K., Thomas, C. A., Scharfe, D. B., Gascon, N., Cappelli, M. A., Fernandez, E. 2008; 36 (5): 2058-2068

View details for DOI 10.1109/TPS.2008.2004364

View details for Web of Science ID 000261363100011

An analysis of millimetre-wave interferometry on Hall thruster plumes by finite difference time domain simulations JOURNAL OF PHYSICS D-APPLIED PHYSICS Lee, J., Cappelli, M. A. 2008; 41 (18)

View details for DOI 10.1088/0022-3727/41/18/185205

View details for Web of Science ID 000258985500021

A simple isentropic model of electron transport in Hall thrusters JOURNAL OF PHYSICS D-APPLIED PHYSICS Knoll, A. K., Cappelli, M. A. 2008; 41 (16)

View details for DOI 10.1088/0022-3727/41/16/162003

View details for Web of Science ID 000258221100003

Magnetized microdischarge plasma generation at low pressure 20th Symposium on Plasma Science for Materials (SPSM-20) Ito, T., Kobayashi, K., Hamaguchi, S., Cappelli, M. A. ELSEVIER SCIENCE SA. 2008: 6668–72

View details for DOI 10.1016/j.tsf.2007.11.040

View details for Web of Science ID 000257977900024

High speed images of drift waves and turbulence in magnetized microplasmas IEEE TRANSACTIONS ON PLASMA SCIENCE Ito, T., Cappelli, M. A. 2008; 36 (4): 1228-1229

View details for DOI 10.1109/TPS.2003.927347

View details for Web of Science ID 000258618200184

Optimal discharge placement in plasma-assisted combustion of a methane jet in cross flow COMBUSTION AND FLAME Kim, W., Do, H., Mungal, M. G., Cappelli, M. A. 2008; 153 (4): 603-615

View details for DOI 10.1016/j.combustflame.2007.11.015

View details for Web of Science ID 000256319800009

Cross-talk in multiple dielectric barrier discharge actuators APPLIED PHYSICS LETTERS Do, H., Kim, W., Cappelli, M. A., Mungal, M. G. 2008; 92 (7)

View details for DOI 10.1063/1.2885085

View details for Web of Science ID 000253540500021

Formation and role of cool flames in plasma-assisted premixed combustion APPLIED PHYSICS LETTERS Kim, W., Mungal, M. G., Cappelli, M. A. 2008; 92 (5)

View details for DOI 10.1063/1.2841894

View details for Web of Science ID 000253016500020

Growth of resistive instabilities in ExB plasma discharge simulations PHYSICS OF PLASMAS Fernandez, E., Scharfe, M. K., Thomas, C. A., Gascon, N., Cappelli, M. A. 2008; 15 (1)

View details for DOI 10.1063/1.2823033

View details for Web of Science ID 000252821500004

Magnetized microdischarge plasmas in low pressure argon and helium 2nd International Symposium on Atomic Technology Kobayashi, K., Ito, T., Cappelli, M. A., Hamaguchi, S. IOP PUBLISHING LTD. 2008

View details for DOI 10.1088/1742-6596/106/1/012020

View details for Web of Science ID 000259999900020

On the role of oxygen in dielectric barrier discharge actuation of aerodynamic flows APPLIED PHYSICS LETTERS Kim, W., Do, H., Mungal, M. G., Cappelli, M. A. 2007; 91 (18)

View details for DOI 10.1063/1.2803755

View details for Web of Science ID 000250643600025

Simulating plasma-induced hall thruster wall erosion with a two-dimensional hybrid model IEEE TRANSACTIONS ON PLASMA SCIENCE Sommer, E., Scharfe, M. K., Gascon, N., Cappelli, M. A., Fernandez, E. 2007; 35 (5): 1379-1387

View details for DOI 10.1109/TPS.2007.905943

View details for Web of Science ID 000250993200023

Experimental characterization of a micro-hall thruster JOURNAL OF PROPULSION AND POWER Ito, T., Gascon, N., Crawford, W. S., Cappelli, M. A. 2007; 23 (5): 1068-1074

View details for DOI 10.2514/1.27140

View details for Web of Science ID 000249671200021

On the production of energetic neutrals in the cathode sheath of direct-current discharges APPLIED PHYSICS LETTERS Ito, T., Cappelli, M. A. 2007; 90 (10)

View details for DOI 10.1063/1.2711416

View details for Web of Science ID 000244791700022

Investigation of NO production and flame structure in plasma enhanced premixed combustion PROCEEDINGS OF THE COMBUSTION INSTITUTE Kim, W., Do, H., Mungal, M. G., Cappelli, M. A. 2007; 31: 3319-3326

View details for DOI 10.1016/j.proci.2006.07.107

View details for Web of Science ID 000252858200189

Shear-Based Model for Electron Transport in 2D Hybrid Hall Thruster Simulations 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Scharfe, M. K., Thomas, C. A., Scharfe, D. B., Gascon, N., Cappelli, M. A. 2007

View details for DOI 10.2514/6.2007-5208

The Deflagration - Detonation Transition in Gas-Fed Pulsed Plasma Accelerators 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Poehlmann, F., Gascon, N., Cappelli, M. A. 2007

View details for DOI 10.2514/6.2007-5263

Numerical Simulation of High Frequency Wave Coupling within a Hall Thruster 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Knoll, A., Gascon, N., Cappelli, M. 2007

View details for DOI 10.2514/6.2007-5266

Numerical investigation of electron behavior in the near-field of Hall thrusters 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Smith, A. W., Cappelli, M. A. 2007

View details for DOI 10.2514/6.2007-5240

Bluff body flow separation control using surface dielectric barrier discharges 45th AIAA Aerospace Sciences Meeting and Exhibit Do, H., Kim, W., Mungal, M. G., Cappelli, M. A. 2007

View details for DOI 10.2514/6.2007-939

Plasma-discharge stabilization of jet diffusion flames IEEE TRANSACTIONS ON PLASMA SCIENCE Kim, W., Do, H., Mungal, M. G., Cappelli, M. A. 2006; 34 (6): 2545-2551

View details for DOI 10.1109/TPS.2006.886084

View details for Web of Science ID 000242922800011

Millimetre wave plasma interferometry in the near field of a Hall plasma accelerator JOURNAL OF PHYSICS D-APPLIED PHYSICS Cappelli, M. A., Gascon, N., Hargus, W. A. 2006; 39 (21): 4582-4588

View details for DOI 10.1088/0022-3727/39/21/013

View details for Web of Science ID 000242476000015

Nonintrusive characterization of the azimuthal drift current in a coaxial E x B discharge plasma PHYSICAL REVIEW E Thomas, C. A., Gascon, N., Cappelli, M. A. 2006; 74 (5)

Abstract

A diagnostic is developed for the nonintrusive study of the azimuthal drift current in the coaxial ExB discharge of a Hall plasma accelerator. The technique of fast current interruption is used to generate a signal on several loop antenna that circle the outer wall of the discharge channel. The signal on the antenna is recorded, and used to determine the spatial distribution of the azimuthal drift at the moment of current interruption. The results of the experiment are compared to estimates derived via prior intrusive measurements, and the intrusive estimates are found to predict the spatial characteristics of the azimuthal drift, but underestimate its total magnitude. The self-induced magnetic field is then calculated and added to the applied magnetic field. The peak total magnetic field is seen to shift 2-5mm towards the anode due to self-induction, and suffer a reduction in magnitude of 10%-15%. The peak in the total magnetic field is then found to more closely coincide with the peak of the measured electric field than the peak of the vacuum magnetic field. It is concluded that the self-induced magnetic field could be important to anomalous electron mobility in the Hall-effect thruster, and simulation efforts should try to include its impact.

View details for DOI 10.1103/PhysRevE.74.056402

View details for PubMedID 17279996

Aerodynamic modification of flow over bluff objects by plasma actuation EXPERIMENTS IN FLUIDS Sung, Y., Kim, W., Mungal, M. G., Cappelli, M. A. 2006; 41 (3): 479-486

View details for DOI 10.1007/s00348-006-0175-0

View details for Web of Science ID 000240058000011

Low-power magnetized microdischarge ion source APPLIED PHYSICS LETTERS Ito, T., Cappelli, M. A. 2006; 89 (6)

View details for DOI 10.1063/1.2335612

View details for Web of Science ID 000239690800028

Comparison of hybrid Hall thruster model to experimental measurements PHYSICS OF PLASMAS Scharfe, M. K., Gascon, N., Cappelli, M. A., Fernandez, E. 2006; 13 (8)

View details for DOI 10.1063/1.2336186

View details for Web of Science ID 000240237700052

Ion energy distribution and gas heating in the cathode fall of a direct-current microdischarge PHYSICAL REVIEW E Ito, T., Cappelli, M. A. 2006; 73 (4)

Abstract

This paper reports on measurements of the ion energy distribution (IED) at the cathode of an argon dc microdischarge using energy-resolved molecular beam mass spectrometry. The measurements are conducted at a fixed pressure-electrode separation product (pd) of 1 cm Torr with a maximum discharge pressure of 20 Torr. The measured IED is compared to the theory of Davis and Vanderslice [W. D. Davis and T. A. Vanderslice, Phys. Rev. 131, 219 (1963)]. A higher pressure in a case of almost constant normalized current densities by pressure (Jp(-2) = 0.080+/-0.006 mA/cm(-2) Torr(-2)) yields a lower ratio of the ion mean free path to the sheath thickness. The results in almost constant Jp(-2) case then indicate that a scaling law of Jp(-2) is no longer applicable for IED of microdischarge. Expected background gaseous temperatures from IEDs with the collisional Child law have reasonable increasing with increased current density (J) in both cases of almost constant Jp(-2) and a constant pressure of 10 Torr. Supported by temperature measurement by laser absorption spectroscopy, it is demonstrated that the expanded theory might be applicable also to microdischarges (Ar approximately 20 Torr) with temperature adjusting.

View details for DOI 10.1103/PhysRevE.73.046401

View details for Web of Science ID 000237146800070

View details for PubMedID 16711933

Wall erosion in 2D Hall thruster simulations 42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Sommier, E., Allis, M. K., Gascon, N., Cappelli, M. A. 2006

View details for DOI 10.2514/6.2006-4656

Introduction of Physical Transport Mechanisms into 2D Hybrid Hall Thruster Simulations 42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Allis, M. K., Thomas, C. A., Gascon, N., Cappelli, M. A., Fernandez, E. 2006

View details for DOI 10.2514/6.2006-4325

Operation of a Coaxial High Energy (CHENG) Thruster 42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Poehlmann, F., Gascon, N., Thomas, C., Cappelli, M. A. 2006

View details for DOI 10.2514/6.2006-5157

The Magnetic Interference Hall Accelerator 42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Thomas, C., Sommier, E., Gascon, N., Cappelli, M. A. 2006

View details for DOI 10.2514/6.2006-4993

Experimental investigation of high frequency plasma oscillations within Hall thrusters 42ND AIAA/ASME/SAE/ASEE JOINT PROPULSION CONFERENCE & EXHIBIT Knoll, A., Thomas, C., Gascon, N., Cappelli, M. 2006

View details for DOI 10.2514/6.2006-5171

Coaxial Hall Thruster with Diamond Inner Channel Wall 42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Crawford, W. S., Corey, R. L., Cappelli, M. A. 2006

View details for DOI 10.2514/6.2006-4995

Measurements in Stationary Reference Bi Discharge Cell for Diagnostics of a Bismuth Hall Thruster 42ND AIAA/ASME/SAE/ASEE JOINT PROPULSION CONFERENCE & EXHIBIT Scharfe, D. B., Cappelli, M. A. 2006

View details for DOI 10.2514/6.2006-4638

Fluctuation-induced transport in the Hall plasma accelerator 42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Thomas, C. A., Cappelli, M. A. 2006

View details for DOI 10.2514/6.2006-5168

Flame stabilization enhancement and NOx production using ultra short repetitively pulsed plasma discharges 44th AIAA Aerospace Sciences Meeting and Exhibit Kim, W., Do, H., Mungal, M. M., Cappelli, M. A. 2006

View details for DOI 10.2514/6.2006-560

Investigation of field structure and electron behavior in the near-field of Hall thrusters 42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Smith, A. W., Cappelli, M. A. 2006

View details for DOI 10.2514/6.2006-4835

An axial-azimuthal hybrid simulation of coaxial Hall thrusters 42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Fernandez, E., A, K., Cappelli, M. A. 2006

View details for DOI 10.2514/6.2006-4329

Further development of a micro Hall thruster 42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Ito, T., Gascon, N., Crawford, W., Cappelli, M. A. 2006

View details for DOI 10.2514/6.2006-4495

Design and tuning of a vacuum microplasma spray system: Particle entrainment Symposium on Surface Engineering in Materials Science III held at the 2005 TMS Annual Meeting Crawford, W. S., Cappelli, M. A., Prinz, F. B. MINERALS, METALS & MATERIALS SOC. 2005: 267–282

View details for Web of Science ID 000228243600027

The VHITAL Program to Demonstrate the Performance and Lifetime of a Bismuth-Fueled Very High Isp Hall Thruster 41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Marrese-Reading, C., Sengupta, A., Frisbee, R., Polk, J., Cappelli, M. A., Boyd, I., Keidar, M., Tverdoklebov, S., Semenkin, S., Markusic, T., Yalin, A., Knowles, T. 2005

View details for DOI 10.2514/6.2005-4564

Microwave interferometry (90 GHz) for Hall thruster plume density characterization 41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Reed, G. D., Hargus Jr, W. A., Cappelli, M. A. 2005

View details for DOI 10.2514/6.2005-4399

Ion velocity measurements in a linear Hall thruster 41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Gascon, N., Cappelli, M. A., Hargus, W. A. 2005

View details for DOI 10.2514/6.2005-4401

Ion Energy Distributions in the Cathode Sheath of an Argon DC Microdischarge IEEE International Conference on Plasma Science Ito, T., Cappelli, M. A. 2005

View details for DOI 10.1109/PLASMA.2005.359416

Electron Cross-Field Transport in 2D Hybrid Hall Thruster Simulation IEEE International Conference on Plasma Science Allis, M. K., Thomas, C., Gascon, N., Cappelli, M. A., Fernandez, E. 2005

View details for DOI 10.1109/PLASMA.2005.359186

Development of Optical Diagnostics for Bismuth Plasma Propulsion Devices IEEE International Conference on Plasma Science Scharfe, D. B., Cappelli, M. A. 2005: 165

View details for DOI 10.1109/PLASMA.2005.359169

Gradient transport processes in E× B plasmas 41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Thomas, C. A., Cappelli, M. A. 2005

View details for DOI 10.2514/6.2005-4063

Spectroscopic Measurements of Bismuth For Optical Diagnostics 41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Scharfe, D. B., Cappelli, M. A. 2005

View details for DOI 10.2514/6.2005-4230

Flame stabilization using a plasma discharge in a lifted jet flame 43rd AIAA Aerospace Sciences Meeting and Exhibit Kim, W., Mungal, M. G., Cappelli, M. A. 2005

View details for DOI 10.2514/6.2005-931

Arcjet neutralization of Hall thrusters, Part 2: Experimental demonstration JOURNAL OF SPACECRAFT AND ROCKETS Walker, Q. E., Gascon, N., Cappelli, M. A., Hargus, W. A., Schilling, J. A. 2004; 41 (6): 1023-1030

View details for Web of Science ID 000225846700015

Arcjet plasma neutralization of Hall thrusters, Part 1: Hybrid thruster mission analysis JOURNAL OF SPACECRAFT AND ROCKETS Hargus, W. A., Schilling, J. H., Walker, Q. E., Cappelli, M. A. 2004; 41 (6): 1016-1022

View details for Web of Science ID 000225846700014

Non-intrusive characterization of the hall thruster azimuthal drift current 40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Thomas, C. A., Gascon, N., Cappelli, M. A. 2004

View details for DOI 10.2514/6.2004-3776

Arcjet Plasma Neutralization of Hall Thrusters, Part 2: Experimental Demonstration Journal of Spacecraft and Rockets Walker, Q. E., Gascon, N., Cappelli, M. A., Hargus, Jr., W. A., Schilling, J. H. 2004; 41: 1023-1030

View details for DOI 10.2514/1.3280

Images of Ground State Xenon Density in the Near Field of Low Power Hall Thruster 40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Cappelli, M. A., Hargus Jr, W. A. 2004

View details for DOI 10.2514/6.2004-4120

Very high Isp thruster with anode layer (VHITAL): an overview Space 2004 Conference and Exhibit Marrese-Reading, C. M., Frisbee, R., Sengupta, A., Cappelli, M. A., Tverdoklebov, S., Semenkin, S., Boyd, I. 2004

View details for DOI 10.2514/6.2004-5910

Optical Diagnostics Options for Bismuth Hall Thrusters 40TH AIAA/ASME/SAE/ASEE JOINT PROPULSION CONFERENCE AND EXHIBIT Scharfe, D. B., Cappelli, M. A. 2004

View details for DOI 10.2514/6.2004-3946

A Comparison of 2-D Hybrid Hall Thruster Model to Experimental Measurements 40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Allis, M. K., Gascon, N., Vialard-Goudou, C., Cappelli, M. A., Fernandez, E. 2004

View details for DOI 10.2514/6.2004-3951

Mechanism for anomalously high voltages in high-pressure dc microdischarge mixtures of He, Ne, and Xe JOURNAL OF APPLIED PHYSICS Ganter, R., Cappelli, M. 2003; 94 (3): 2145-2147

View details for DOI 10.1063/1.1590406

View details for Web of Science ID 000184400400130

Optical measurements of plasma velocity and temperature in a low-rate, low-power LPPS system SURFACE & COATINGS TECHNOLOGY Hamatani, H., Crawford, W. S., Cappelli, M. A. 2003; 162 (1): 79-92

View details for Web of Science ID 000178898100011

Plasma Oscillations and Wall Material Effects in a Hall Thruster 39th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Gascon, N., Meezan, N. B., Thomas, C. A., Cappelli, M. A. 2003

View details for DOI 10.2514/6.2003-4857

Spatial and Temporal Mapping of Azimuthal Drift Current in a Hall Thruster 39th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Thomas, C. A., Gascon, N., Cappelli, M. A. 2003

View details for DOI 10.2514/6.2003-4854

Further Studies of a Linear Hall thruster 39th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Gascon, N., Thomas, C. A., Hermann, W. A., Cappelli, M. A. 2003

View details for DOI 10.2514/6.2003-5156

Interactions within a cluster of low power Hall thrusters 39th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Hargus, W. A., Cappelli, M. A. 2003

View details for DOI 10.2514/6.2003-5006

Operating regimes of a linear SPT with low secondary electron-induced wall conductivity 39th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Gascon, N., Thomas, C., Hermann, W. A., Cappelli, M. A. 2003

View details for DOI 10.2514/6.2003-5156

Overview of electric propulsion research in US academia 39th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Gallimore, A., Boyd, I., Burton, R., Martinez-Sanchez, M., Batischev, O., Williams, J., Yalin, A., Wilbur, P. J., Wilbur, P., Winglee, R., Mikellides, P., Fisch, N., Raitses, Y., Choueiri, E., Roy, S., Wang, J. 2003

View details for DOI 10.2514/6.2003-4442

Vacuum ultraviolet absorption measurements of ground state xenon in the near field of a low power Hall thruster 39th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Cappelli, M. A., Hargus, W. A. 2003

View details for DOI 10.2514/6.2003-5007

Plasma instabilities in the ionization regime of a Hall thruster 39TH AIAA/ASME/SAE/ASEE JOINT PROPULSION CONFERENCE AND EXHIBIT Gascon, N., Cappelli, M. A. 2003

View details for DOI 10.2514/6.2003-4857

A Study of the Azimuthal Electron Drift in an E x B Discharge Using a Non-invasive Antenna Array 39th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Thomas, C. A., Cappelli, M. A. 2003

View details for DOI 10.2514/6.2003-4854

Kinetic and surface mechanisms to growth of hexagonal boron nitride Conference on Surface Engineering 2002 - Synthesis, Characterization and Applications held at the 2002 MRS Fall Meeting Barreto, P. R., Kull, A. E., Cappelli, M. A. MATERIALS RESEARCH SOCIETY. 2003: 313–318

View details for Web of Science ID 000183595500050

Laser-induced-fluorescence characteristics of a helium arcjet flow APPLIED PHYSICS B-LASERS AND OPTICS Walker, Q. E., Cappelli, M. A. 2002; 75 (6-7): 717-722

View details for DOI 10.1007/s00340-002-1050-1

View details for Web of Science ID 000180587100017

Kinetic study of wall collisions in a coaxial Hall discharge PHYSICAL REVIEW E Meezan, N. B., Cappelli, M. A. 2002; 66 (3)

Abstract

Coaxial Hall discharges (also known as Hall thrusters, stationary plasma thrusters, and closed-drift accelerators) are cross-field plasma sources under development for space propulsion applications. The importance of the electron-wall interaction to the Hall discharge operation is studied the through analysis of experimental data and simulation of the electron energy distribution function (EEDF) inside the discharge channel. Experimental time-average plasma property data from a laboratory Hall discharge are used to calculate the electron conductivity and to estimate the rate of wall-loss collisions. The electron Boltzmann equation is then solved in the local field limit, using the experimental results as inputs. The equation takes into account ionization and wall collisions, including secondary electrons produced at the wall. Local electron balances are used to calculate the sheath potential at the insulator walls. Results show an EEDF depleted at high energy due to electron loss to the walls. The calculated EEDFs agree well with experimental electron temperature data when the experimentally determined effective collision frequency is used for electron momentum transport. The electron wall-loss and wall-return frequencies are extremely low compared to those predicted by a Maxwellian of equal average energy. The very low frequency of wall collisions suggests that secondary electrons do not contribute to cross-field transport. This conclusion holds despite significant experimental uncertainty.

View details for DOI 10.1103/PhysRevE.66.036401

View details for Web of Science ID 000178624400015

View details for PubMedID 12366261

Ion beam dynamics in a linear Hall discharge IEEE TRANSACTIONS ON PLASMA SCIENCE Meezan, N. B., Cappelli, M. A. 2002; 30 (1): 138-139

View details for Web of Science ID 000175845900068

Interior and exterior laser-induced fluorescence and plasma measurements within a Hall thruster JOURNAL OF PROPULSION AND POWER Hargus, W. A., Cappelli, M. A. 2002; 18 (1): 159-168

View details for Web of Science ID 000173577200019

Transport physics in Hall plasma thrusters 40th AIAA Aerospace Sciences Meeting & Exhibit Cappelli, M. A., Meezan, N. B., Gascon, N. 2002

View details for DOI 10.2514/6.2002-485

A characterization of plasma fluctuations within a hall discharge IEEE TRANSACTIONS ON PLASMA SCIENCE Chesta, E., Lam, C. M., Meezan, N. B., Schmidt, D. P., Cappelli, M. A. 2001; 29 (4): 582-591

View details for Web of Science ID 000170571500003

Laser-induced fluorescence measurements of velocity within a Hall discharge APPLIED PHYSICS B-LASERS AND OPTICS Hargus, W. A., Cappelli, M. A. 2001; 72 (8): 961-969

View details for Web of Science ID 000169039800011

Mass spectrometric and Langmuir probe measurements in inductively coupled plasmas in Ar, CHF3/As and CHF3/Ar/O-2 mixtures PLASMA SOURCES SCIENCE & TECHNOLOGY Kim, J. S., Rao, M. V., Cappelli, M. A., Sharma, S. P., Meyyappan, M. 2001; 10 (2): 191-204

View details for Web of Science ID 000169258200009

Parametric study of the vacuum ultraviolet emission and electrical characteristics of a He-Xe microdischarge JOURNAL OF APPLIED PHYSICS Postel, O. B., Cappelli, M. A. 2001; 89 (9): 4719-4726

View details for Web of Science ID 000168130100006

Stability of a magnetized Hall plasma discharge JOURNAL OF APPLIED PHYSICS Chesta, E., Meezan, N. B., Cappelli, M. A. 2001; 89 (6): 3099-3107

View details for Web of Science ID 000167248100005

Anomalous electron mobility in a coaxial Hall discharge plasma PHYSICAL REVIEW E Meezan, N. B., Hargus, W. A., Cappelli, M. A. 2001; 63 (2)

Abstract

A comprehensive analysis of measurements supporting the presence of anomalous cross-field electron mobility in Hall plasma accelerators is presented. Nonintrusive laser-induced fluorescence measurements of neutral xenon and ionized xenon velocities, and various electrostatic probe diagnostic measurements are used to locally determine the effective electron Hall parameter inside the accelerator channel. These values are then compared to the classical (collision-driven) Hall parameters expected for a quiescent magnetized plasma. The results indicate that in the vicinity of the anode, where there are fewer plasma instabilities, the electron-transport mechanism is likely elastic collisions with the background neutral xenon. However, we find that in the vicinity of the discharge channel exit, where the magnetic field is the strongest and where there are intense fluctuations in the plasma properties, the inferred Hall parameter departs from the classical value, and is close to the Bohm value of (omega(ce)tau)(eff) approximately 16. These results are used to support a simple model for the Hall parameter that is based on the scalar addition of the electron collision frequencies (elastic collision induced plus fluctuation induced), as proposed by Boeuf and Garrigues [J. Appl. Phys. 84, 3541 (1998)]. The results also draw attention to the possible role of fluctuations in enhancing electron transport in regions where the electrons are highly magnetized.

View details for Web of Science ID 000167022500062

View details for PubMedID 11308588

A 90 GHz Phase-Bridge Interferometer for Plasma Density Measurements In the Near Field of a Hall Thruster 40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, Joint Propulsion Conferences Cappelli, M. A., Hermann, W., Kodiak, M., Gascon, N., Hargus, Jr., W. 2001

View details for DOI 10.2514/6.2004-3775

Electron energy distribution function in a Hall discharge plasma 37th Joint Propulsion Conference and Exhibit Meezan, N. B., Cappelli, M. A. 2001

View details for DOI 10.2514/6.2001-3326

High density plasma neutralization of a Hall thruster 37th Joint Propulsion Conference and Exhibit Walker, Q. E., Cappelli, M. A. 2001

View details for DOI 10.2514/6.2001-3352

Performance of a linear Hall discharge with an open electron drift 37th Joint Propulsion Conference and Exhibit Cappelli, M. A., Walker, Q. E., Meezan, N. B., Hargus, W. 2001

View details for DOI 10.2514/6.2001-3503

Dispersion of low frequency waves in a Hall discharge 37th Joint Propulsion Conference and Exhibit Gascon, N., Chesta, E., Meezan, N., Cappelli, M. 2001

View details for DOI 10.2514/6.2001-3506

Development of a colloid micro-thruster for flight demonstration on the Emerald nanosatellite 37th Joint Propulsion Conference and Exhibit Pranajaya, F. M., Cappelli, M. A. 2001

View details for DOI 10.2514/6.2001-3330

Numerical study of instabilities in a magnetized Hall discharge 37th Joint Propulsion Conference and Exhibit Cappelli, M. A., Chesta, E., Gascon, N. 2001

View details for DOI 10.2514/6.2001-3324

Doppler-free absorption measurements of Stark broadening in a flowing hydrogen plasma JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Cappelli, M. A., Walker, Q. E., Storm, P. V. 2000; 66 (4): 343-361

View details for Web of Science ID 000087091600003

Raman scattering measurements of molecular hydrogen in a low-density, arc-heated plasma APPLIED PHYSICS B-LASERS AND OPTICS Beattie, D. R., Cappelli, M. A. 2000; 70 (3): 419-427

View details for Web of Science ID 000088307800016

Methyl concentration measurements during microwave plasma-assisted diamond deposition PLASMA CHEMISTRY AND PLASMA PROCESSING Cappelli, M. A., Owano, T. G., Gicquel, A., Duten, X. 2000; 20 (1): 1-12

View details for Web of Science ID 000086551300001

A low-power, linear-geometry Hall plasma source with an open electron-drift PLASMA SOURCES SCIENCE & TECHNOLOGY Schmidt, D. P., Meezan, N. B., Hargus, W. A., Cappelli, M. A. 2000; 9 (1): 68-76

View details for Web of Science ID 000085585100011

Vacuum emission and breakdown characteristics of a planar He-Xe microdischarge APPLIED PHYSICS LETTERS Postel, O. B., Cappelli, M. A. 2000; 76 (5): 544-546

View details for Web of Science ID 000084938700008

Characterization and dielectric properties of fluorinated amorphous carbon measured by capacitance-voltage response and spectroscopic ellipsometry Symposium on Amorphous and Nanostructured Carbon at the 1999 MRS Fall Meeting Glew, A. D., Cappelli, M. A. MATERIALS RESEARCH SOCIETY. 2000: 341–346

View details for Web of Science ID 000089239300053

A molecular beam mass spectrometer for plasma jet chemical vapor deposition reactor diagnostics 27th IEEE International Conference on Plasma Science Kull, A. E., Cappelli, M. A. 2000

View details for DOI 10.1109/PLASMA.2000.854738

Electron density measurements for determining the anomalous electron mobility in a coaxial Hall discharge plasma 36th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Meezan, N. B., Cappelli, M. A. 2000

View details for DOI 10.2514/6.2000-3420

Fluctuation-induced electron transport in closed-drift Hall discharges 27th IEEE International Conference on Plasma Science Cappelli, M. A., Meezan, N. B., Chesta, E. 2000

View details for DOI 10.1109/PLASMA.2000.854979

Electrohydrodynamic flow control with a glow-discharge surface plasma AIAA journal Cappelli, M. A., Roth, J. R., Sherman, D. M., Wilkinson, S. P. 2000; 38 (7): 1166-1172

View details for DOI 10.2514/2.1110

Vacuum ultraviolet emission and metastable state properties of DC microdischarges 27th IEEE International Conference on Plasma Science Postel, O. B., Cappelli, M. A. 2000

View details for DOI 10.1109/PLASMA.2000.854759

Model predictions versus experiments: CH3 radical density profiles in diamond deposition microwave plasma reactor 6th International Symposium on Diamond Materials at the 196th Meeting of the Electrochemical-Society Gicquel, A., Hassouni, K., Owano, T., Duten, X., Cappelli, M. ELECTROCHEMICAL SOCIETY INC. 2000: 41–52

View details for Web of Science ID 000089239900005

Ion energy and momentum flux dependence of diamond-like carbon film synthesis in radio frequency discharges SURFACE & COATINGS TECHNOLOGY Glew, A. D., Saha, R., Kim, J. S., Cappelli, M. A. 1999; 114 (2-3): 224-229

View details for Web of Science ID 000080808500015

Coherent structures in crossed-field closed-drift Hall discharges IEEE TRANSACTIONS ON PLASMA SCIENCE Cappelli, M. A., Hargus, W. A., Meezan, N. B. 1999; 27 (1): 96-97

View details for Web of Science ID 000080369700047

In situ plasma analysis, fluorine incorporation, thermostability, stress, and hardness comparison of fluorinated amorphous carbon and hydrogenated amorphous carbon thin films deposited on Si by plasma enhanced chemical vapor deposition Symposium O: Low-Dielectric Constant Materials at the 1999 MRS Spring Meeting Glew, A. D., Cappelli, M. A., Touzelbaev, M. N., Hu, Y. MATERIALS RESEARCH SOCIETY. 1999: 285–290

View details for Web of Science ID 000085482500035

Laser-induced fluorescence measurements of a helium arcjet flow 30th Plasmadynamic and Lasers Conference Walker, Q. E., Cappelli, M. A. 1999

View details for DOI 10.2514/6.1999-3603

Mass spectrometric investigations of a plasma jet chemical vapor deposition reactor IEEE International Conference on Plasma Science Kull, A. E., Cappelli, M. A. 1999

View details for DOI 10.1109/PLASMA.1999.829476

Low-rate reactive and non-reactive low pressure plasma spraying IEEE International Conference on Plasma Science Crawford, W. S., Cappelli, M. A., Prinz, F. B. 1999

View details for DOI 10.1109/PLASMA.1999.829475

Laser induced fluorescence measurements within a laboratory Hall thruster 30th Plasmadynamic and Lasers Conference Hargus, Jr., W. A., Cappelli, M. A. 1999

View details for DOI 10.2514/6.1999-3436

Characterization of plasma disturbances in a Hall discharge using a double probe 30th Plasmadynamic and Lasers Conference Schmidt, D. P., Meezan, N. B., Cappelli, M. A. 1999

View details for DOI 10.2514/6.1999-3437

Operating characteristics of a linear Hall thruster with an open electron-drift 35th Joint Propulsion Conference and Exhibit Schmidt, D. P., Meezan, N. B., Hargus Jr, W. A., Cappelli, M. A. 1999

View details for DOI 10.2514/6.1999-2569

Interior and exterior laser-induced fluorescence and plasma potential measurements on a laboratory Hall thruster 35th Joint Propulsion Conference and Exhibit Hargus Jr, W. A., Cappelli, M. A. 1999

View details for DOI 10.2514/6.1999-2721

Optical study of anomalous electron transport in a laboratory Hall thruster 35th Joint Propulsion Conference and Exhibit Meezan, N. B., Hargus Jr., W. A., Schmidt, D. P., Cappelli, M. A. 1999

View details for DOI 10.2514/6.1999-2284

LIF measurements of a low-power helium arcjet IEEE International Conference on Plasma Science Walker, Q. E., Cappelli, M. A. 1999

View details for DOI 10.1109/PLASMA.1999.829653

The structure of an expanding hydrogen arcjet plasma PHYSICS OF PLASMAS Hargus, W. A., Cappelli, M. A. 1998; 5 (12): 4488-4497

View details for Web of Science ID 000077031000047

Competing surface oxidation reactions during diamond synthesis in low pressure flames JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS Kim, J. S., Cappelli, M. A. 1998; 37 (11): 6223-6228

View details for Web of Science ID 000077648000079

Temperature measurements in low-pressure, diamond-forming, premixed flames JOURNAL OF APPLIED PHYSICS Kim, J. S., Cappelli, M. A. 1998; 84 (8): 4595-4602

View details for Web of Science ID 000076185100083

Arcjet nozzle flow-field characterization by laser-induced fluorescence APPLIED OPTICS Storm, P. V., Cappelli, M. A. 1998; 37 (3): 486-495

Abstract

Laser-induced fluorescence of the Balmer-alpha (H(alpha)) transition of atomic hydrogen was performed within the nozzle of a 1-kW class radiatively cooled arcjet thruster operating on hydrogen and synthesized-hydrazine propellants. Axial velocities were determined from the Doppler shift of the H(alpha) line center relative to a stationary reference, whereas translational temperatures and electron number densities were determined from a line-shape analysis of the H(alpha) transition. The results are compared with a numerical model and indicate excellent agreement with the velocities, as well as temperatures near the nozzle exit. There are discrepancies, however, in the temperatures far upstream of the exit and in the electron densities, suggesting needed improvements in the modeling of the recombination chemistry.

View details for Web of Science ID 000071501400013

View details for PubMedID 18268611

Plasma-jet deposition of diamond Low-Pressure Synthetic Diamond Cappelli, M. A., Owano, T. G. 1998: 59-84

View details for DOI 10.1007/978-3-642-71992-9_4

Overview of US academic programs in electric propulsion 34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Burton, R. L., Micci, M. M., Boyd, I. D., Martinez-Sanchez, M. M., Keefer, D. R., Gatsonis, N. A., Cappelli, M. A., Gallimore, A. D., Turchi, P. J., Wilbur, P. J., Hrbud, I., Choueri, E. Y. 1998

View details for DOI 10.2514/6.1998-3182

Optical and electrostatic characterization of oscillatory Hall discharge behavior 34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Meezan, N. B., Hargus, Jr., W. A., Cappelli, M. A. 1998

View details for DOI 10.2514/6.1998-3502

Characterization of a low-power helium arcjet 34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Walker, Q. E., Hargus Jr, W. A., Cappelli, M. A. 1998

View details for DOI 10.2514/6.1998-3636

Measurements of electron density at the exit of an arcjet thruster 34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Cappelli, M. A., Walker, Q. E., Storm, P. V. 1998

View details for DOI 10.2514/6.1998-3635

Laser induced fluorescence measurements on a laboratory Hall thruster 34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Hargus Jr, W. A., Cappelli, M. A. 1998

View details for DOI 10.2514/6.1998-3645

Development of a linear Hall thruster 34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Hargus Jr., W. A., Cappelli, M. A. 1998

View details for DOI 10.2514/6.1998-3336

Diagnostics of Plasma Propulsion Devices American Physical Society, Division of Plasma Physics Meeting Cappelli, M. A. 1998

View details for DOI 10.1109/PLASMA.1994.588875

Main physical features and processes determining the performance of stationary plasma thrusters Journal of Propulsion and Power Cappelli, M. A., Kim, V. 1998; 14 (5): 736-743

View details for DOI 10.2514/2.5335

Near-edge X-ray absorption fine structure spectroscopy of arcjet-deposited cubic boron nitride DIAMOND AND RELATED MATERIALS BERNS, D. H., Cappelli, M. A., Shuh, D. K. 1997; 6 (12): 1883-1886

View details for Web of Science ID A1997YG13600021

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

Low energy ion impact-enhanced growth of cubic boron nitride in a supersonic nitrogen/argon plasma flow JOURNAL OF MATERIALS RESEARCH BERNS, D. H., Cappelli, M. A. 1997; 12 (8): 2014-2026

View details for Web of Science ID A1997XQ27800009

Arcjet plasma enhanced vapor phase epitaxy of GaN MATERIALS LETTERS Cappelli, M. A., Kull, A. E., Schwendner, K., LEE, H., Harris, S. J., MROCZKOWSKI, J. 1997; 31 (3-6): 161-164

View details for Web of Science ID A1997XF56700001

CH3 detection in a low-density supersonic arcjet plasma during diamond synthesis APPLIED PHYSICS LETTERS Loh, M. H., Cappelli, M. A. 1997; 70 (8): 1052-1054

View details for Web of Science ID A1997WJ62600046

CH3 detection in a low-density supersonic arcjet plasma during diamond synthesis Applied physics letters Loh, M. H., Cappelli, M. A. 1997; 70 (8): 1052 - 1054

View details for DOI 10.1063/1.118439

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

A performance study of a low power Hall thruster 33rd Joint Propulsion Conference and Exhibit Hargus Jr., W. A., Cedolin, R. J., Meezan, N. B., Cappelli, M. A. 1997

View details for DOI 10.2514/6.1997-3061

The transient behavior of a low power laboratory xenon Hall thruster 33rd Joint Propulsion Conference and Exhibit Hargus Jr, W. A., Meezan, N. B., Cappelli, M. A. 1997

View details for DOI 10.2514/6.1997-3050

Radiative emission analysis of an expanding hydrogen arc plasma .1. Arc region diagnostics through axial emission JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Storm, P. V., Cappelli, M. A. 1996; 56 (6): 901-918

View details for Web of Science ID A1996WA55600008

Radiative emission analysis of an expanding hydrogen arc plasma .2. Plume region diagnostics through radial emission JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Storm, P. V., Cappelli, M. A. 1996; 56 (6): 919-932

View details for Web of Science ID A1996WA55600009

Interior plasma diagnostics of arcjet thrusters JOURNAL OF PROPULSION AND POWER Cappelli, M. A., Storm, P. V. 1996; 12 (6): 1070-1076

View details for Web of Science ID A1996VT42600010

Stark broadening corrections to laser-induced fluorescence temperature measurements in a hydrogen arcjet plume APPLIED OPTICS Storm, P. V., Cappelli, M. A. 1996; 35 (24): 4913-4918

Abstract

Laser-induced fluorescence of the H(α) transition of atomic hydrogen has previously been performed in the plume of a hydrogen arcjet thruster. Measurements of plasma velocity and temperature, based on the Doppler shift and broadening of the H(α) line shape, were previously published [Appl. Opt. 32, 6117 (1993)]. In that paper the Stark broadening of the H(α) transition was estimated from static-ion calculations performed in the early 1970's and found to be negligible in comparison with the Doppler broadening. However, more recent dynamic-ion calculations have shown the Stark broadening to be considerably larger than was previously assumed, resulting in inaccurate temperature measurements. We present a reanalysis of the fluorescence data, taking into account the improved Stark broadening calculations. The correct atomic hydrogen translation temperature and electron number density are obtained from the Doppler and Stark broadening components of the measured line shape. The results indicate a substantial drop in temperature from those previously reported.

View details for Web of Science ID A1996VC32000030

View details for PubMedID 21102917

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

Cubic boron nitride synthesis in low-density supersonic plasma flows APPLIED PHYSICS LETTERS BERNS, D. H., Cappelli, M. A. 1996; 68 (19): 2711-2713

View details for Web of Science ID A1996UJ08900037

Fluorescence velocity measurements in the interior of a hydrogen arcjet nozzle AIAA JOURNAL Storm, P. V., Cappelli, M. A. 1996; 34 (4): 853-855

View details for Web of Science ID A1996UC61100031

GaN film growth by a supersonic arcjet plasma Symposium on III-Nitride, SiC and Diamond Materials for Electronic Devices Cappelli, M. A., Kull, A. E., Schwendner, K., LEE, H., Harris, S. J., MROCZKOWSKI, J. MATERIALS RESEARCH SOCIETY. 1996: 359–364

View details for Web of Science ID A1996BG72B00055

Mass flux measurements in the plume of a low power arcjet nozzle 32nd Joint Propulsion Conference and Exhibit Hargus, Jr., W. A., Cappelli, M. A. 1996

View details for DOI 10.2514/6.1996-3190

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

Thermodynamic analysis based on measurements of flowfield properties in low power hydrogen arcjet thrusters 32nd Joint Propulsion Conference and Exhibit Cappelli, M. A., Berns, D. H., Hargus, Jr, W. A., Storm, P. V. 1996

View details for DOI 10.2514/6.1996-3293

Plasma and Cathode Emission from a High Power Hydrogen Arcjet Thruster 32nd Joint Propulsion Conference and Exhibit Berns, D. H., Storm, P. V., Hargus, Jr., W. A., Cappelli, M. A., McFall, K. A., Spores, R. A. 1996

View details for DOI 10.2514/6.1996-2703

LIF characterization of arcjet nozzle flows 32nd Joint Propulsion Conference and Exhibit Storm, P. V., Cappelli, M. A. 1996

View details for DOI 10.2514/6.1996-2987

Diamond film synthesis in low pressure premixed flames of different fuel types 22nd International Conference on Metallurgical Coatings and Thin Films (ICMCTF 1995) Kim, J. S., Cappelli, M. A. ELSEVIER SCIENCE SA. 1995: 791–96

View details for Web of Science ID A1995TM18000062

DIAMOND FILM SYNTHESIS IN LOW-PRESSURE PREMIXED METHANE-OXYGEN FLAMES APPLIED PHYSICS LETTERS Kim, J. S., Cappelli, M. A. 1995; 67 (8): 1081-1083

View details for Web of Science ID A1995RQ00200013

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

AN EXPERIMENTAL-STUDY OF THE TEMPERATURE AND STOICHIOMETRY DEPENDENCE OF DIAMOND GROWTH IN LOW-PRESSURE FLAT FLAMES JOURNAL OF MATERIALS RESEARCH Kim, J. S., Cappelli, M. A. 1995; 10 (1): 149-157

View details for Web of Science ID A1995PY82100021

Non-equilibrium flow phenomena in low power hydrogen arcjets 31st Joint Propulsion Conference and Exhibit Butler, G. W., Boyd, I. D., Cappelli, M. A. 1995

View details for DOI 10.2514/6.1995-2819

Laser-induced fluorescence measurements within an arcjet thruster nozzle 31st Joint Propulsion Conference and Exhibit Storm, P. V., Cappelli, M. A. 1995

View details for DOI 10.2514/6.1995-2381

Raman scattering measurements of molecular hydrogen in an arcjet thruster plume 26th Plasmadynamics and Lasers Conference Beattie, D. R., Cappelli, M. A. 1995

View details for DOI 10.2514/6.1995-1956

High spectral resolution emission study of a low power hydrogen arcjet plume 26th Plasmadynamics and Lasers Conference Storm, P. V., Cappelli, M. A. 1995

View details for DOI 10.2514/6.1995-1960

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

Ceramic thin film synthesis via arcjet CVD 31st Joint Propulsion Conference and Exhibit Berns, D. H., Kull, A. E., Cappelli, M. A. 1995

View details for DOI 10.2514/6.1995-2824

Linear stability analysis of the ionization layer of a diffuse anode arc 31st Joint Propulsion Conference and Exhibit Yuan, B. P., Cappelli, M. A. 1995

View details for DOI 10.2514/6.1995-3064

Stability of a near-thermal plasma in contact with an anode 26th Plasmadynamics and Lasers Conference Yuan, B. P., Cappelli, M. V. 1995

View details for DOI 10.2514/6.1995-1991

Spectral imaging of the arcjet electrode region 26th Plasmadynamics and Lasers Conference Berns, D. H., Storm, P. V., Cappelli, M. A. 1995

View details for DOI 10.2514/6.1995-1957

Pressure measurements in the plume of a low power arcjet nozzle 31st Joint Propulsion Conference and Exhibit Hargus Jr, W. A., Cappelli, M. A. 1995

View details for DOI 10.2514/6.1995-2818

NUMERICAL AND EXPERIMENTAL INVESTIGATIONS OF LOW-DENSITY SUPERSONIC JETS OF HYDROGEN JOURNAL OF FLUID MECHANICS Boyd, I. D., Beattie, D. R., Cappelli, M. A. 1994; 280: 41-67

View details for Web of Science ID A1994QA08600002

DIAMOND FILM GROWTH IN LOW-PRESSURE PREMIXED ETHYLENE-OXYGEN FLAMES APPLIED PHYSICS LETTERS Kim, J. S., Cappelli, M. A. 1994; 65 (22): 2786-2788

View details for Web of Science ID A1994PU40400010

IN-SITU MASS SAMPLING DURING SUPERSONIC ARCJET SYNTHESIS OF DIAMOND 4th European Conference on Diamond, Diamond-like and Related Materials (Diamond Films 93) Cappelli, M. A., Loh, M. H. ELSEVIER SCIENCE SA. 1994: 417–21

View details for Web of Science ID A1994NN16000022

2ND-ORDER RAMAN-SCATTERING IN DIAMOND UP TO 1900 K PHYSICAL REVIEW B HERCHEN, H., Cappelli, M. A. 1994; 49 (5): 3213-3216

View details for Web of Science ID A1994MW34900029

In-situ mass sampling during supersonic arcjet synthesis of diamond Diamond and Related Materials Cappelli, M. A., Loh, M. H. 1994; 3 (4–6): 417–421

View details for DOI 10.1016/0925-9635(94)90195-3

Axial emission measurements on a medium power hydrogen arcjet thruster 30th Joint Propulsion Conference and Exhibit Storm, P. V., Cappelli, M. A. 1994

View details for DOI 10.2514/6.1994-2743

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

Interior plasma diagnostics of arcjet thrusters 25th Plasmadynamics and Lasers Conference, Fluid Dynamics and Co-located Conferences Cappelli, M. A., Storm, P. V. 1994

View details for DOI 10.2514/6.1994-2654

A MULTI-FLUID STAGNATION-FLOW PLASMA MODEL WITH SELF-CONSISTENT TREATMENT OF THE COLLISIONAL SHEATH IEEE TRANSACTIONS ON PLASMA SCIENCE Meeks, E., Cappelli, M. A. 1993; 21 (6): 768-777

View details for Web of Science ID A1993MQ94100019

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

TEMPERATURE-DEPENDENCE OF THE CUBIC BORON-NITRIDE RAMAN LINES PHYSICAL REVIEW B HERCHEN, H., Cappelli, M. A. 1993; 47 (21): 14193-14199

View details for Web of Science ID A1993LF72900029

2 PRECURSOR MODEL FOR LOW-PRESSURE CHEMICAL-VAPOR-DEPOSITION OF SILICON DIOXIDE FROM TETRAETHYLORTHOSILICATE JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B ISLAMRAJA, M. M., Chang, C., McVittie, J. P., Cappelli, M. A., Saraswat, K. C. 1993; 11 (3): 720-726

View details for Web of Science ID A1993LH22800029

2-TEMPERATURE FLUID MODEL FOR HIGH-PRESSURE PLASMAS IN CONTACT WITH COOLED ELECTRODES JOURNAL OF APPLIED PHYSICS Meeks, E., Cappelli, M. A. 1993; 73 (7): 3172-3182

View details for Web of Science ID A1993KV03100009

SUPERSONIC DC-ARCJET SYNTHESIS OF DIAMOND DIAMOND 92 - 3RD INTERNATIONAL CONF ON THE NEW DIAMOND SCIENCE AND TECHNOLOGY / 3RD EUROPEAN CONF ON DIAMOND, DIAMOND-LIKE AND RELATED COMPOUNDS Loh, M. H., Cappelli, M. A. ELSEVIER SCIENCE SA. 1993: 454–61

View details for Web of Science ID A1993LE62000071

THE NONEQUILIBRIUM REGION OF AN ELECTRODE IN CONTACT WITH A FLOWING THERMAL PLASMA IEEE TRANSACTIONS ON PLASMA SCIENCE Cappelli, M. A. 1993; 21 (1): 194-201

View details for Web of Science ID A1993LD70900027

Temperature dependence of the cubic boron nitride Raman lines Physical Review B Herchen, H., Cappelli, M. A. 1993; 47 (21): 14193–14199

View details for DOI 10.1103/PhysRevB.47.14193

Monte Carlo and experimental studies of nozzle flow in a low-power hydrogen arcjet 29th Joint Propulsion Conference and Exhibit Boyd, I. D., Cappelli, M. A., Beattie, D. R. 1993

View details for DOI 10.2514/6.1993-2529

Characterization of a supersonic hydrogen arcjet plasma thruster employed in diamond film synthesis 29th Joint Propulsion Conference and Exhibit Loh, M. H., Liebskind, J. G., Cappelli, M. A. 1993

View details for DOI 10.2514/6.1993-2227

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

A multi-fluid model of near-electrode plasma behavior 29th Joint Propulsion Conference and Exhibit Meeks, E., Cappelli, M. A. 1993

View details for DOI 10.2514/6.1993-2103

Characterization of a supersonic hydrogen arcjet plasma thruster employed in diamond film synthesis 29th Joint Propulsion Conference and Exhibit Loh, M. H., Liebskind, J. G., Cappelli, M. A. 1993

View details for DOI 10.2514/6.1993-2227

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

Two precursor model for low‐pressure chemical vapor deposition of silicon dioxide from tetraethylorthosilicate Journal of Vacuum Science & T IslamRaja, M. M., Chang, C., McVittie, J. P., Cappelli, M. A., Sarawat, K. C. 1993; 11 (3): 720 - 726

View details for DOI 10.1116/1.586778

A MODEL OF DIAMOND GROWTH IN LOW-PRESSURE PREMIXED FLAMES JOURNAL OF APPLIED PHYSICS Kim, J. S., Cappelli, M. A. 1992; 72 (11): 5461-5466

View details for Web of Science ID A1992KA93200066

DIAMOND SYNTHESIS IN SUPERSONIC DIRECT-CURRENT ARCJET PLASMA AT SUBTORR PRESSURES 19TH INTERNATIONAL CONF ON METALLURGICAL COATINGS AND THIN FILMS Loh, M. H., Cappelli, M. A. ELSEVIER SCIENCE SA. 1992: 408–13

View details for Web of Science ID A1992KA63900011

1ST-ORDER RAMAN-SCATTERING IN HOMOEPITAXIAL CHEMICAL VAPOR-DEPOSITED DIAMOND AT ELEVATED-TEMPERATURES CONF ON APPLIED DIAMOND HERCHEN, H., Cappelli, M. A., LANDSTRASS, M. I., Plano, M. A., Moyer, M. D. ELSEVIER SCIENCE SA. 1992: 206–15

View details for Web of Science ID A1992HW79400032

DEVELOPMENT OF DESIGN RULES FOR RELIABLE TUNGSTEN PLUGS USING SIMULATIONS 30TH ANNUAL INTERNATIONAL SYMP ON RELIABILITY PHYSICS ISLAMRAJA, M. M., BARIYA, A. J., Saraswat, K. C., Cappelli, M. A., McVittie, J. P., MOBERLY, L., LAHRI, R. I E E E. 1992: 8–10

View details for Web of Science ID A1992BW01T00003

Vacuum ultraviolet absorption in a hydrogen arcjet 28TH JOINT PROPULSION CONFERENCE AND EXHIBIT Manzella, D. H., Cappelli, M. A. 1992

View details for DOI 10.2514/6.1992-3564

Supersonic dc-arcjet plasma at subtorr pressures as a medium for diamond film synthesis 28th Joint Propulsion Conference and Exhibit Loh, M. H., Cappelli, M. A. 1992

View details for DOI 10.2514/6.1992-3534

Modeling of the near-electrode regions of arcjets. I-Coupling of the flowfield to the non-equilibrium boundary layers 28th Joint Propulsion Conference and Exhibit Cappelli, M. A. 1992

View details for DOI 10.2514/6.1992-3109

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

Molecular hydrogen Raman scattering in a low power arcjet thruster 28th Joint Propulsion Conference and Exhibit Beattie, D. R., Cappelli, M. A. 1992

View details for DOI 10.2514/6.1992-3566

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

A 3-DIMENSIONAL MODEL FOR LOW-PRESSURE CHEMICAL-VAPOR-DEPOSITION STEP COVERAGE IN TRENCHES AND CIRCULAR VIAS JOURNAL OF APPLIED PHYSICS ISLAMRAJA, M. M., Cappelli, M. A., McVittie, J. P., Saraswat, K. C. 1991; 70 (11): 7137-7140

View details for Web of Science ID A1991GU04900074

1ST-ORDER RAMAN-SPECTRUM OF DIAMOND AT HIGH-TEMPERATURES PHYSICAL REVIEW B HERCHEN, H., Cappelli, M. A. 1991; 43 (14): 11740-11744

View details for Web of Science ID A1991FM46300021

DIAMOND SYNTHESIS IN A 50 KW INDUCTIVELY COUPLED ATMOSPHERIC-PRESSURE PLASMA TORCH 3RD SYMP ON PLASMA PROCESSING AND SYNTHESIS OF MATERIALS Owano, T. G., Kruger, C. H., Cappelli, M. A. MATERIALS RESEARCH SOC. 1991: 131–136

View details for Web of Science ID A1991BT70A00020

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

First-order Raman spectrum of diamond at high temperatures Physical Review B Herchen, H., Cappelli, M. A. 1991; 43 (14): 11740–11744

View details for DOI 10.1103/PhysRevB.43.11740

DIAMOND SYNTHESIS IN A 50-KW INDUCTIVELY COUPLED ATMOSPHERIC-PRESSURE PLASMA TORCH 2ND INTERNATIONAL CONF ON THE NEW DIAMOND SCIENCE AND TECHNOLOGY Owano, T. G., Goodwin, D. G., Kruger, C. H., Cappelli, M. A. MATERIALS RESEARCH SOC. 1991: 497–502

View details for Web of Science ID A1991BU83N00072

HIGH-TEMPERATURE RAMAN-SCATTERING BEHAVIOR IN DIAMOND 4TH CONF ON DIAMOND OPTICS HERCHEN, H., Cappelli, M. A. SPIE - INT SOC OPTICAL ENGINEERING. 1991: 158–168

View details for Web of Science ID A1991BU90M00015

ON THE DEVELOPMENT OF INSITU RAMAN ANALYSIS FOR PLASMA DEPOSITED DIAMOND 2ND INTERNATIONAL CONF ON THE NEW DIAMOND SCIENCE AND TECHNOLOGY Cappelli, M. A., HERCHEN, H. MATERIALS RESEARCH SOC. 1991: 225–231

View details for Web of Science ID A1991BU83N00031

HIGH GROWTH-RATE DIAMOND SYNTHESIS IN A LARGE AREA ATMOSPHERIC-PRESSURE INDUCTIVELY COUPLED PLASMA JOURNAL OF MATERIALS RESEARCH Cappelli, M. A., Owano, T. G., Kruger, C. H. 1990; 5 (11): 2326-2333

View details for Web of Science ID A1990EH57600008

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

AN INVESTIGATION OF DIAMOND FILM DEPOSITION IN A PREMIXED OXYACETYLENE FLAME JOURNAL OF APPLIED PHYSICS Cappelli, M. A., Paul, P. H. 1990; 67 (5): 2596-2602

View details for Web of Science ID A1990CR96900062

ELECTRON-DENSITY RADIAL PROFILES DERIVED FROM STARK-BROADENING IN A SODIUM PLASMA PRODUCED BY LASER RESONANCE SATURATION APPLIED OPTICS Cappelli, M. A., Measures, R. M. 1987; 26 (6): 1058-1067

Abstract

The first free electron density radial profiles of a sodium plasma created by laser resonance saturation are reported. The measurements were based on Stark broadening, of the 4(2)D-3(2)P multiplet and reveal the formation of a conically shaped plasma along the path of the laser pulse, which can be attributed to strong absorption of the laser pulse along the ionization path.

View details for Web of Science ID A1987G929900019

View details for PubMedID 20454270

Laser resonance saturation Advances in Laser Science-I Measures, R. M., Cappelli, M. A., Kissack, R. S., Wong, S. K. 1986: 658–63

View details for DOI 10.1063/1.35819

SODIUM ATOM DISTRIBUTION WITHIN A HEAT SANDWICH OVEN REVIEW OF SCIENTIFIC INSTRUMENTS Cappelli, M. A., CARDINAL, P. G., HERCHEN, H., Measures, R. M. 1985; 56 (11): 2030-2034

View details for Web of Science ID A1985ATS8900006

2-CHANNEL TECHNIQUE FOR STARK MEASUREMENTS OF ELECTRON-DENSITY WITHIN A LASER-PRODUCED SODIUM PLASMA APPLIED OPTICS Cappelli, M. A., Measures, R. M. 1984; 23 (13): 2107-2114

View details for Web of Science ID A1984SY73300020

View details for PubMedID 18212956

A Kinetic Study of Electron-Wall Collisions in a Hall Thruster Meezan, N. B., Cappelli, M. A.

Arcjet thrusters for the synthesis of diamond and cubic-boron nitride films 30th Joint Propulsion Conference and Exhibit Loh, M. H., Liebeskind, J. G., Cappelli, M. A. 1994

View details for DOI 10.2514/6.1994-3233

Nanosecond repetitively pulsed discharge control of premixed lean methane-air combustion 65th Annual Gaseous Electronics Conference, Austin, TX Bak, M. S., Cappelli, M. A. 2012

FURTHER INVESTIGATIONS OF AN OPEN DRIFT HALL THRUSTER WITH BORON NITRIDE AND DIAMOND WALL Gascon, N., Thomas, C., Hermann, W., Cappelli, M., A.

Energetic neutral particle production in the cathode sheath of direct-current discharges Ito, T., Cappelli, M. A.

Tunable surface plasmon resonance in laser-induced plasma spheroids PLASMA SOURCES SCIENCE & TECHNOLOGY Colon Quinones, R. A., Underwood, T., Cappelli, M. A. 2021; 30 (4)

View details for DOI 10.1088/1361-6595/abc5a2

View details for Web of Science ID 000640395600001

Physics of ExB discharges relevant to plasma propulsion and similar technologies PHYSICS OF PLASMAS Kaganovich, I. D., Smolyakov, A., Raitses, Y., Ahedo, E., Mikellides, I. G., Jorns, B., Taccogna, F., Gueroult, R., Tsikata, S., Bourdon, A., Boeuf, J., Keidar, M., Powis, A., Merino, M., Cappelli, M., Hara, K., Carlsson, J. A., Fisch, N. J., Chabert, P., Schweigert, I., Lafleur, T., Matyash, K., Khrabrov, A. V., Boswell, R. W., Fruchtman, A. 2020; 27 (12)

View details for DOI 10.1063/5.0010135

View details for Web of Science ID 000600206100001

Editorial conclusions to the special issue on electrical discharges for aerospace applications JOURNAL OF PHYSICS D-APPLIED PHYSICS Leonov, S. B., Starikovskaya, S., Ombrello, T., Cappelli, M. A. 2020; 53 (41)

View details for DOI 10.1088/1361-6463/ab9d9a

View details for Web of Science ID 000553970700001

Laser-induced breakdown stabilization of non-premixed jet diffusion flames Bulletin of the American Physical Society Bak, M. S., Cappelli, M. A. 2012; 57 (8)

Cross-Field Transport of Electrons in Hall Plasma Accelerators Cappelli, M. A. 2012

Characteristics of low frequency air glow dielectric barrier discharges at atmospheric pressure Hwang, N., Im, S., Bak, M. S., Cappelli, M. A. 2012

Advanced Plasma Propulsion DTIC Document Choueiri, E., Cappelli, M. A., Martinez-Sanchez, M. M., Hallock, A., Gildea, S., Matlock, T. 2011

SUPERSONIC INLET DUCT UNSTART INDUCED BY FUEL JET INJECTION 7th International Symposium on Turbulence and Shear Flow Phenomena Do, H., Im, S., Mungal, M. G., Cappelli, M. A. 2011

Advanced Plasma Propulsion PRINCETON UNIV NJ Choueiri, E., Cappelli, M. A., Martinez-Sanchez, M., Hallock, A., Gildea, S., Matlock, T. 2011: 145

Quenching of electronically excited states of molecular nitrogen in nanosecond repetitive pulsed discharges in atmospheric pressure air Bulletin of the American Physical Society Bak, M. S., Cappelli, M. A. 2011; 56 (15)

Laminar lean premixed methane/air combustion near the lean flammability limit using nanosecond repetitive pulsed discharge plasmas Bulletin of the American Physical Society Bak, M. S., Do, H., Mungal, M. G., Cappelli, M. A. 2011

Experimental Study of Supersonic Inlet Flow Unstart Induced by Mass Injection Bulletin of the American Physical Society Do, H., Im, S., Mungal, M. G., Cappelli, M. A. 2011

Laser-Induced Fluorescence Velocity Measurements of a Low Power Cylindrical Hall Thruster DTIC Document MacDonald, N. A., Cappelli, M. A., Hargus Jr, W. A. 2009

Experimental Characterization of High Frequency Instabilities within the Discharge Channel of a Hall Thruster 31st International Electric Propulsion Conference Knoll, A. K., Cappelli, M. A. 2009

Predicting Electron Transport Using Simulated Axial Waves in a Radial-Axial Hybrid Hall Thruster Model Technical paper Scharfe, M. K., Cappelli, M. A., Fernandez, E. 2009

Bismuth Hall thruster I: Simulation-suggested design and performance Journal of Technical Physics Scharfe, D. B., Scharfe, M. K., Cappelli, M. A. 2008; 3–4 (49): 329–348

Role of Negative Ions and Crosstalk in DBD Flow Actuation Bulletin of the American Physical Society Mungal, M. G., Do, H., Kim, W., Cappelli, M. A. 2008

Bismuth Hall thruster II: Simulated diagnostics Journal of Technical Physics Scharfe, D. B., Cappelli, M. A. 2008; 49 (3-4): 349-361

Preliminary Study of Arcjet Neutralization of Hall Thruster Clusters (Postprint) Walker, Quentin, E., Cappelli, Mark, A., Hargus, William, A. 2007

Towards Reduced Wall Effect Hall Plasma Accelerators Cappelli, M. A. 2007

Millimeter Wave Plasma Interferometry in the Near Field of a Hall Plasma Accelerator (PREPRINT) DTIC Document Cappelli, M. A., Gascon, N. C., Hargus, W. 2006

Ultra-Low Power Stationary Plasma Thruster 29th International Electric Propulsion Conference Gascon, N., Crawford, W. S., Cappelli, M. A. 2005

Non-local electric field effects in magnetized plasmas 29th International Electric Propulsion Conference Gascon, N., Allis, M., Sommier, E., Cappelli, M. A. 2005

Stationary reference Bi discharge cell for optical diagnostics of a bismuth Hall thruster 29th International Electric Propulsion Conference Scharfe, D. B., Cappelli, M. A. 2005

A Two-Dimensional Hybrid (z-theta) Simulation of Coaxial Hall Thrusters 29th International Electric Propulsion Conference Fernandez, E., Knoll, A. K., Tarik, K., Cappelli, M. 2005

A Two-Dimensional (z-θ) Fluid/PIC Simulation of Coaxial Hall Thrusters 29th International Electric Propulsion Conference Fernandez, E., Knoll, A., Cappelli, M. A., Kaya, T. 2005

Effect of Charge Exchange on 2D Hall Thruster Simulation 29th International Electric Propulsion Conference Allis, M. K., Gascon, N., Cappelli, M. A. 2005

Hall Thruster With an External Acceleration Zone AIR FORCE RESEARCH LAB EDWARDS AFB CA SPACE AND MISSILE PROPULSION DIV Gascon, N., Corey, Ronald, L., Cappelli, Mark, A., Hargus, W. 2005: 8

Hall thruster with an external acceleration zone DTIC Document Gascon, N., Corey, R. L., Cappelli, M. A., Hargus, W. 2005

Wall effects on the excitation and propagation of instabilities in Hall thrusters Gascon, N., Capelli, M. A. 2003

Performance studies of a colloid thruster system Pranajaya, F. M., Cappelli, M. A. 2001

Linear geometry Hall thruster with boron nitride and diamond walls Gascon, N., Cappelli, M. A. 2001

Preliminary Study of Arcjet Neutralization of Hall Thruster Clusters Walker, Q. E., Cappelli, M. A., Hargus Jr, W. A., Schilling, J. 2001

Advanced Optical and Electrostatic Characterization of Closed-Electron Drift Thrusters Cappelli, Mark, A. 2001

A Linear Stability Analysis of a Magnetized Hall Plasma Discharge American Physical Society, 42nd Annual Meeting of the APS Division of Plasma Physics combined with the 10th International Congress on Plasma Physics October 23 - 27, 2000 Québec City, Canada Meeting ID: DPP00 Cappelli, Mark, A., Chesta, E., Meezan, Nathan, B. 2000

Characterization of Inert Gas Plasma Thrusters Cappelli, M. 2000

Interior and Exterior Laser-Induced Fluorescence and Plasma Potential Measurements on a Laboratory Hall Thruster (Postprint) DTIC Document Hargus Jr, W. A., Cappelli, M. A. 1999

Dispersion of Low-Frequency Azimuthal Waves in Hall Discharges American Physical Society, 41st Annual Meeting of the Division of Plasma Physics Cappelli, M. A., Schmidt, D. P., Meezan, N. B. 1999

Measurements of Ion Energy and Ion Flux Distributions in Inductively Coupled Plasmas in CF4/O2/Ar Mixtures Rao, M., V. V. S., Kim, J., S., Cappelli, M., A., Sharma, S., P. 1999

The Breakdown and Vacuum Emission Characteristics of a High Surface Area to Volume Ratio Discharge American Physical Society, Gaseous Electronics Conference Postel, O. B., Cappelli, M. A. 1999

CF2 Detection in Radio-Frequency Ar/CHF3 Plasmas by Fourier Transform Infrared Spectroscopy American Physical Society, Gaseous Electronics Conference Kim, J. S., Rao, M. V., Cappelli, M. A., Sharma, S. P. 1999

Langmuir Probe Distortions and Probe Compensation in an Inductively Coupled Plasma Ji, J. S., Cappelli, M. A., Kim, J. S., Rao, V., S. M 1999

Electrical and VUV/Vis. Emission Characteristics of a Xe/He microdischarge American Physical Society, 41st Annual Meeting of the Division of Plasma Physics Cappelli, M. A., Postel, O. B. 1999

Anomalous Transport in Closed-Drift Hall Discharges American Physical Society, 41st Annual Meeting of the Division of Plasma Physics Meezan, N., B., Cappelli, Mark, A. 1999

Laser-Induced Fluorescence Measurements within a Laboratory Hall Thruster (Postprint) Hargus Jr., W., A., Cappelli, M., A. 1999

2D simulations of Hall thrusters CTR Annual Research Briefs Fernandez, E., Cappelli, M. A., Mahesh, K. 1998

In Situ CF3 Detection in Low Pressure RF Discharges by Fourier Transform Infrared Spectroscopy Kim, J., S., Cappelli, M., A., Sharma, S., P. 1998

CH3 and CFx Detection in Low Pressure RF Discharges by Broadband Ultraviolet Absorption Spectroscopy Cappelli, M., A., Kim, J., S., Sharma, S., P. 1998

Ion Energy Distributions and their Relative Abundance in Inductively Coupled Plasmas 51st Annual Gaseous Electronics Conference & 4th International Conference on Reactive Plasmas Kim, J. S., Rao, M. V., Cappelli, M. A., Sharma, S. P. 1998

Laser Induced Fluorescence Measurements on a Laboratory Hall Thruster (Postprint) Hargus Jr, W. A., Cappelli, M. A. 1998

Oscillatory Behavior in Closed-Drift Hall Plasma Discharges American Physical Society, Division of Plasma Physics Meeting Cappelli, M., A., Meezan, N., B., Hargus Jr, W., H. 1998

Fundamental Studies of the Electrode Regions in Arcjet Thrusters Cappelli, Mark, A. 1998

Laser Induced Fluorescence Measurements on a Laboratory Hall Thruster (Postprint) stormingmedia.us Cappelli, M. A., Hargus, J. 1998: 12

Langmuir Probe Measurements in an Inductively Coupled GEC Reference Cell Plasma APS Meeting Abstracts Ji, J. S., Kim, J. S., Cappelli, M. A., Sharma, S., P. 1998

A study of a Low Power Hall thruster transient Behavior International Electric Hargus Jr., W., A., Meezan, N. B., Cappelli, M. A. 1997

The Stability of Arc Attachment in Arcjet Propulsion Devices. STANFORD UNIV CA DEPT OF MECHANICAL ENGINEERING Cappelli, Mark, A., Yuan, B. 1997: 93

Fundamental Studies of the Near-Electrode Regions in Arcjet Thrusters. Cappelli, Mark, A. 1995

Optical diagnostics of a low power hydrogen arcjet International Electric Cappelli, M. A., Hanson, R. K., Liebeskind, J. G., Manzella, D. H. 1991

An investigation of diamond synthesis in an oxygen-acetylene diffusion flame Cappelli, M., A. 1990

Development of optical diagnostics for performance evaluation of arcjet thrusters Final Report, High Temperature Gasdynamics Lab. Cappelli, Mark, A. 1989

A Direct Comparison of Hydrogen 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

Mark A. Cappelli

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