期刊
PHYSICS OF PLASMAS
卷 20, 期 5, 页码 -出版社
AIP Publishing
DOI: 10.1063/1.4807040
关键词
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资金
- U.S. Department of Energy Office of Inertial Confinement Fusion [DE-FC52-08NA28302, DE-FG02-06ER54879, DE-FC02-04ER54789, DE-FG52-06NA26195, DE-FG02-03ER54271]
- University of Rochester
- New York State Energy Research and Development Authority
- NSF [PHY-0903797]
Two-dimensional particle-in-cell (PIC) simulations were performed for the cone-in-shell integrated fast-ignition experiments at the Omega Laser Facility [W. Theobald et al., Phys. Plasmas 18, 056305 (2011)]. The initial plasma density profile in the PIC simulations was taken from hydrodynamic simulations of the prepulse interaction with the gold cone. Hot-electron generation from laser-pre-plasma interactions and transport up to 100 x the critical density (n(c)) was studied. The simulation showed a mean divergence half-angle of 68 degrees and 50% absorption for the hot electrons. The simulation results show that the generated hot electrons were dominated in number by low-energy electrons but in energy by multi-MeV electrons. Electron transport between 5 and 100 nc was ballistic. In the late stage of the simulation, all the results were largely independent of polarization, indicating a stochastic hot-electron-generation mechanism. (C) 2013 AIP Publishing LLC.
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