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Author Dunn, J. ♦ Young, B. K. ♦ Hankla, A. K. ♦ Conder, A. D. ♦ White, W. E. ♦ Stewart, R. E.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PLASMA PHYSICS AND FUSION ♦ LASER-PRODUCED PLASMA ♦ ELECTRON EMISSION ♦ LASER TARGETS ♦ PULSES ♦ NEODYMIUM LASERS ♦ X RADIATION ♦ K CONVERSION ♦ FS RANGE
Abstract We describe recent laser-solid interaction experiments using the 500 fs Janus Nd:glass (1053 nm) laser presently at 1.5 TW power level. The laser beam path is enclosed in vacuum from the compressor to the target and is focused using an off-axis paraboloid. Optical diagnostics monitor the near field pattern, focal spot, spectrum, temporal shape and pre-pulse level. A 12 {mu}m diameter (FWHM) focal spot is achieved (2.5{times}diffraction limit) corresponding to a peak irradiance of 8{times}10{sup 17} Wcm{sup {minus}2} on target. A suite of x-ray diagnostics characterize the x-ray emission from the plasma. We present results for normal incidence irradiation of high-Z (Zn, Ge, Mo, Sn) solid targets. The supra-thermal electrons produced in the short scale length plasma have temperature {ital T}{sub {ital H}}{gt}100 keV and can efficiently fluoresce the cold {ital K}-{alpha} lines in the 8{endash}30 keV energy range. {copyright} {ital 1996 American Institute of Physics.}
ISSN 0094243X
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-05-01
Publisher Department Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publisher Place United States
Volume Number 369
Issue Number 1
Technical Publication No. CONF-950476-
Organization Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)


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