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Your search keyword '"Chen, S. N."' showing total 11 results
Start Over Author "Chen, S. N." Journal physics of plasmas
11 results on '"Chen, S. N."'

1. Observation of extremely strong shock waves in solids launched by petawatt laser heating

Author

Lancaster, K. L., primary, Robinson, A. P. L., additional, Pasley, J., additional, Hakel, P., additional, Ma, T., additional, Highbarger, K., additional, Beg, F. N., additional, Chen, S. N., additional, Daskalova, R. L., additional, Freeman, R. R., additional, Green, J. S., additional, Habara, H., additional, Jaanimagi, P., additional, Key, M. H., additional, King, J., additional, Kodama, R., additional, Krushelnick, K., additional, Nakamura, H., additional, Nakatsutsumi, M., additional, MacKinnon, A. J., additional, MacPhee, A. G., additional, Stephens, R. B., additional, Van Woerkom, L., additional, and Norreys, P. A., additional

Published
2017
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2. Diagnostics of laser-produced plasmas based on the analysis of intensity ratios of He-like ions X-ray emission

Author

Ryazantsev, S. N., primary, Skobelev, I. Yu., additional, Faenov, A. Ya., additional, Pikuz, T. A., additional, Higginson, D. P., additional, Chen, S. N., additional, Revet, G., additional, Béard, J., additional, Portugall, O., additional, Soloviev, A. A., additional, Grum-Grzhimailo, A. N., additional, Fuchs, J., additional, and Pikuz, S. A., additional

Published
2016
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3. Dynamics and structure of self-generated magnetics fields on solids following high contrast, high intensity laser irradiation

Author

Albertazzi, B., primary, Chen, S. N., additional, Antici, P., additional, Böker, J., additional, Borghesi, M., additional, Breil, J., additional, Dervieux, V., additional, Feugeas, J. L., additional, Lancia, L., additional, Nakatsutsumi, M., additional, Nicolaï, Ph., additional, Romagnagni, L., additional, Shepherd, R., additional, Sentoku, Y., additional, Starodubtsev, M., additional, Swantusch, M., additional, Tikhonchuk, V. T., additional, Willi, O., additional, d'Humières, E., additional, Pépin, H., additional, and Fuchs, J., additional

Published
2015
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5. Investigation of longitudinal proton acceleration in exploded targets irradiated by intense short-pulse laser

Author

Gauthier, M., primary, Lévy, A., additional, d'Humières, E., additional, Glesser, M., additional, Albertazzi, B., additional, Beaucourt, C., additional, Breil, J., additional, Chen, S. N., additional, Dervieux, V., additional, Feugeas, J. L., additional, Nicolaï, P., additional, Tikhonchuk, V., additional, Pépin, H., additional, Antici, P., additional, and Fuchs, J., additional

Published
2014
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6. Making relativistic positrons using ultraintense short pulse lasers

Author

Chen, Hui, primary, Wilks, S. C., additional, Bonlie, J. D., additional, Chen, S. N., additional, Cone, K. V., additional, Elberson, L. N., additional, Gregori, G., additional, Meyerhofer, D. D., additional, Myatt, J., additional, Price, D. F., additional, Schneider, M. B., additional, Shepherd, R., additional, Stafford, D. C., additional, Tommasini, R., additional, Van Maren, R., additional, and Beiersdorfer, P., additional

Published
2009
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8. Creation of hot dense matter in short-pulse laser-plasma interaction with tamped titanium foils

Author

Chen, S. N., primary, Gregori, G., additional, Patel, P. K., additional, Chung, H.-K., additional, Evans, R. G., additional, Freeman, R. R., additional, Garcia Saiz, E., additional, Glenzer, S. H., additional, Hansen, S. B., additional, Khattak, F. Y., additional, King, J. A., additional, Mackinnon, A. J., additional, Notley, M. M., additional, Pasley, J. R., additional, Riley, D., additional, Stephens, R. B., additional, Weber, R. L., additional, Wilks, S. C., additional, and Beg, F. N., additional

Published
2007
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9. Making relativistic positrons using ultraintense short pulse lasers.

Author

Hui Chen, Wilks, S. C., Bonlie, J. D., Chen, S. N., Cone, K. V., Elberson, L. N., Gregori, G., Meyerhofer, D. D., Myatt, J., Price, D. F., Schneider, M. B., Shepherd, R., Stafford, D. C., Tommasini, R., Van Maren, R., and Beiersdorfer, P.

Subjects
POSITRONS, LASER beams, PLASMA gases, ANGULAR correlations (Nuclear physics), NUCLEAR physics
Abstract

This paper describes a new positron source using ultraintense short pulse lasers. Although it has been theoretically studied since the 1970s, the use of lasers as a valuable new positron source was not demonstrated experimentally until recent years, when the petawatt-class short pulse lasers were developed. In 2008 and 2009, in a series of experiments performed at the Lawrence Livermore National Laboratory, a large number of positrons were observed after shooting a millimeter thick solid gold target. Up to 2×1010 positrons/s ejected at the back of approximately millimeter thick gold targets were detected. The targets were illuminated with short (∼1 ps) ultraintense (∼1×1020 W/cm2) laser pulses. These positrons are produced predominantly by the Bethe–Heitler process and have an effective temperature of 2–4 MeV, with the distribution peaking at 4–7 MeV. The angular distribution of the positrons is anisotropic. For a wide range of applications, this new laser-based positron source with its unique characteristics may complement the existing sources based on radioactive isotopes and accelerators. [ABSTRACT FROM AUTHOR]

Published
2009
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10. X-ray spectroscopy of buried layer foils irradiated at laser intensities in excess of 1020 W/cm2.

Author

Chen, S. N., Patel, P. K., Chung, H.-K., Kemp, A. J., Le Pape, S., Maddox, B. R., Wilks, S. C., Stephens, R. B., and Beg, F. N.

Subjects
*X-ray spectroscopy, *PLASMA gases, *PLASMA waves, *PLASMA dynamics, *MAGNETOHYDRODYNAMICS
Abstract

Observations of a rapid decrease in thermal temperature as a function of depth of solid targets irradiated with a short pulse, ultrahigh-intensity laser are reported. This phenomenon is investigated using the Titan short pulse laser with intensities greater than 1020 W/cm2 interacting with buried layer targets. The longitudinal temperature profile is determined by measuring K-shell spectra from a 0.4 μm copper tracer layer placed at various depths (i.e., 0–1.5 μm) within the 2.4 μm thick target. It is observed that the line ratios (He-like K-shell lines) as a function of temperature require a consideration of at least three parameters to analyze the K-shell spectra: hot electron population, time-dependent plasma conditions, and opacity. Here, the study of the effect of these three parameters on measured spectra in the short pulse high intensity laser-matter interactions using the atomic model FLYCHK [H.-K. Chung et al., High Energy Density Phys. 1, 3 (2005)] is presented. [ABSTRACT FROM AUTHOR]

Published
2009
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11. X-ray spectroscopy of buried layer foils irradiated at laser intensities in excess of 1020 W/cm2.

Author

Chen, S. N., Patel, P. K., Chung, H.-K., Kemp, A. J., Le Pape, S., Maddox, B. R., Wilks, S. C., Stephens, R. B., and Beg, F. N.

Subjects
X-ray spectroscopy, PLASMA gases, PLASMA waves, PLASMA dynamics, MAGNETOHYDRODYNAMICS
Abstract

Observations of a rapid decrease in thermal temperature as a function of depth of solid targets irradiated with a short pulse, ultrahigh-intensity laser are reported. This phenomenon is investigated using the Titan short pulse laser with intensities greater than 1020 W/cm2 interacting with buried layer targets. The longitudinal temperature profile is determined by measuring K-shell spectra from a 0.4 μm copper tracer layer placed at various depths (i.e., 0–1.5 μm) within the 2.4 μm thick target. It is observed that the line ratios (He-like K-shell lines) as a function of temperature require a consideration of at least three parameters to analyze the K-shell spectra: hot electron population, time-dependent plasma conditions, and opacity. Here, the study of the effect of these three parameters on measured spectra in the short pulse high intensity laser-matter interactions using the atomic model FLYCHK [H.-K. Chung et al., High Energy Density Phys. 1, 3 (2005)] is presented. [ABSTRACT FROM AUTHOR]

Published
2009
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