All Publications


  • High-intensity laser-accelerated ion beam produced from cryogenic micro-jet target REVIEW OF SCIENTIFIC INSTRUMENTS Gauthier, M., Kim, J. B., Curry, C. B., Aurand, B., Gamboa, E. J., Gode, S., Goyon, C., Hazi, A., Kerr, S., Pak, A., PROPP, A., Ramakrishna, B., Ruby, J., Willi, O., Williams, G. J., Roedel, C., Glenzer, S. H. 2016; 87 (11)

    Abstract

    We report on the successful operation of a newly developed cryogenic jet target at high intensity laser-irradiation. Using the frequency-doubled Titan short pulse laser system at Jupiter Laser Facility, Lawrence Livermore National Laboratory, we demonstrate the generation of a pure proton beam a with maximum energy of 2 MeV. Furthermore, we record a quasi-monoenergetic peak at 1.1 MeV in the proton spectrum emitted in the laser forward direction suggesting an alternative acceleration mechanism. Using a solid-density mixed hydrogen-deuterium target, we are also able to produce pure proton-deuteron ion beams. With its high purity, limited size, near-critical density, and high-repetition rate capability, this target is promising for future applications.

    View details for DOI 10.1063/1.4961270

    View details for Web of Science ID 000390242300111

    View details for PubMedID 27910336

  • Absolute dosimetric characterization of Gafchromic EBT3 and HDv2 films using commercial flat-bed scanners and evaluation of the scanner response function variability. Review of scientific instruments Chen, S. N., Gauthier, M., Bazalova-Carter, M., Bolanos, S., Glenzer, S., Riquier, R., Revet, G., Antici, P., Morabito, A., PROPP, A., Starodubtsev, M., Fuchs, J. 2016; 87 (7): 073301-?

    Abstract

    Radiochromic films (RCF) are commonly used in dosimetry for a wide range of radiation sources (electrons, protons, and photons) for medical, industrial, and scientific applications. They are multi-layered, which includes plastic substrate layers and sensitive layers that incorporate a radiation-sensitive dye. Quantitative dose can be retrieved by digitizing the film, provided that a prior calibration exists. Here, to calibrate the newly developed EBT3 and HDv2 RCFs from Gafchromic™, we used the Stanford Medical LINAC to deposit in the films various doses of 10 MeV photons, and by scanning the films using three independent EPSON Precision 2450 scanners, three independent EPSON V750 scanners, and two independent EPSON 11000XL scanners. The films were scanned in separate RGB channels, as well as in black and white, and film orientation was varied. We found that the green channel of the RGB scan and the grayscale channel are in fact quite consistent over the different models of the scanner, although this comes at the cost of a reduction in sensitivity (by a factor ∼2.5 compared to the red channel). To allow any user to extend the absolute calibration reported here to any other scanner, we furthermore provide a calibration curve of the EPSON 2450 scanner based on absolutely calibrated, commercially available, optical density filters.

    View details for DOI 10.1063/1.4954921

    View details for PubMedID 27475550

  • Matter under extreme conditions experiments at the Linac Coherent Light Source JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS Glenzer, S. H., Fletcher, L. B., Galtier, E., Nagler, B., Alonso-Mori, R., Barbrel, B., Brown, S. B., Chapman, D. A., Chen, Z., Curry, C. B., Fiuza, F., Gamboa, E., Gauthier, M., Gericke, D. O., Gleason, A., Goede, S., Granados, E., Heimann, P., Kim, J., Kraus, D., MacDonald, M. J., MacKinnon, A. J., Mishra, R., Ravasio, A., Roedel, C., Sperling, P., Schumaker, W., Tsui, Y. Y., Vorberger, J., Zastrau, U., FRY, A., White, W. E., Hasting, J. B., Lee, H. J. 2016; 49 (9)
  • New experimental platform to study high density laser-compressed matter REVIEW OF SCIENTIFIC INSTRUMENTS Gauthier, M., Fletcher, L. B., Ravasio, A., Galtier, E., Gamboa, E. J., Granados, E., Hastings, J. B., Heimann, P., Lee, H. J., Nagler, B., Schropp, A., Gleason, A., Doeppner, T., Lepape, S., Ma, T., Pak, A., MacDonald, M. J., Ali, S., Barbrel, B., Falcone, R., Kraus, D., Chen, Z., Mo, M., Wei, M., Glenzer, S. H. 2014; 85 (11)

    Abstract

    We have developed a new experimental platform at the Linac Coherent Light Source (LCLS) which combines simultaneous angularly and spectrally resolved x-ray scattering measurements. This technique offers a new insights on the structural and thermodynamic properties of warm dense matter. The < 50 fs temporal duration of the x-ray pulse provides near instantaneous snapshots of the dynamics of the compression. We present a proof of principle experiment for this platform to characterize a shock-compressed plastic foil. We observe the disappearance of the plastic semi-crystal structure and the formation of a compressed liquid ion-ion correlation peak. The plasma parameters of shock-compressed plastic can be measured as well, but requires an averaging over a few tens of shots.

    View details for DOI 10.1063/1.4896175

    View details for Web of Science ID 000345646000203

  • New experimental platform to study high density laser-compressed matter. Review of scientific instruments Gauthier, M., Fletcher, L. B., Ravasio, A., Galtier, E., Gamboa, E. J., Granados, E., Hastings, J. B., Heimann, P., Lee, H. J., Nagler, B., Schropp, A., Gleason, A., Döppner, T., Lepape, S., Ma, T., Pak, A., MacDonald, M. J., Ali, S., Barbrel, B., Falcone, R., Kraus, D., Chen, Z., Mo, M., Wei, M., Glenzer, S. H. 2014; 85 (11): 11E616-?

    Abstract

    We have developed a new experimental platform at the Linac Coherent Light Source (LCLS) which combines simultaneous angularly and spectrally resolved x-ray scattering measurements. This technique offers a new insights on the structural and thermodynamic properties of warm dense matter. The < 50 fs temporal duration of the x-ray pulse provides near instantaneous snapshots of the dynamics of the compression. We present a proof of principle experiment for this platform to characterize a shock-compressed plastic foil. We observe the disappearance of the plastic semi-crystal structure and the formation of a compressed liquid ion-ion correlation peak. The plasma parameters of shock-compressed plastic can be measured as well, but requires an averaging over a few tens of shots.

    View details for DOI 10.1063/1.4896175

    View details for PubMedID 25430362

  • Proton stopping power measurements using high intensity short pulse lasers produced proton beams European Advanced Accelerator Concepts Workshop Chen, S., Atzeni, S., Gauthier, M., et al 2014: 105
  • Investigation of longitudinal proton acceleration in exploded targets irradiated by intense short-pulse laser PHYSICS OF PLASMAS Gauthier, M., Levy, A., d'Humieres, E., Glesser, M., Albertazzi, B., Beaucourt, C., Breil, J., Chen, S. N., Dervieux, V., Feugeas, J. L., Nicolai, P., Tikhonchuk, V., Pepin, H., Antici, P., Fuchs, J. 2014; 21 (1)

    View details for DOI 10.1063/1.4853475

    View details for Web of Science ID 000331638600056

  • Charge Equilibrium of a Laser-Generated Carbon-Ion Beam in Warm Dense Matter PHYSICAL REVIEW LETTERS Gauthier, M., Chen, S. N., Levy, A., Audebert, P., Blancard, C., Ceccotti, T., Cerchez, M., Doria, D., Floquet, V., Lamour, E., Peth, C., Romagnani, L., Rozet, J., Scheinder, M., Shepherd, R., Toncian, T., Vernhet, D., Willi, O., Borghesi, M., Faussurier, G., Fuchs, J. 2013; 110 (13)

    Abstract

    Using ion carbon beams generated by high intensity short pulse lasers we perform measurements of single shot mean charge equilibration in cold or isochorically heated solid density aluminum matter. We demonstrate that plasma effects in such matter heated up to 1 eV do not significantly impact the equilibration of carbon ions with energies 0.045-0.5  MeV/nucleon. Furthermore, these measurements allow for a first evaluation of semiempirical formulas or ab initio models that are being used to predict the mean of the equilibrium charge state distribution for light ions passing through warm dense matter.

    View details for DOI 10.1103/PhysRevLett.110.135003

    View details for Web of Science ID 000316800000009

    View details for PubMedID 23581330