Journal
PHYSICS OF PLASMAS
Volume 17, Issue 10, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.3484217
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Funding
- U.S. Department of Energy Office of Inertial Confinement Fusion [DE-FC52-08NA28302]
- OFES Fusion Science Center [DE-FC02-04ER54789]
- OFES ACE [DE-FG02-05ER54839]
- University of Rochester
- New York State Energy Research and Development Authority
- DOE
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High-intensity, short-pulse laser-interaction experiments with small-mass, wedge-shaped-cavity Cu targets are presented. The diagnostics provided spatially and spectrally resolved measurements of the Cu K-alpha line emission at 8 keV. The conversion efficiency of short-pulse laser energy into fast electrons was inferred from the x-ray yield for wedge opening angles between 30 and 60 and for s- and p-polarized laser irradiation. Up to 36 +/- 7% conversion efficiency was measured for the narrowest wedge with p-polarization. The results are compared with predictions from two-dimensional particle-in-cell simulations. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3484217]
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