A simulation of heating compressed fast ignition cores by petawatt laser-generated electrons.
- Osaka University, Suita, Osaka, Japan
- Mission Research Corporation, Albuquerque, NM
We report on unique particle-in-cell simulations to understand the relativistic electron beam thermalization and subsequent heating of highly compressed plasmas. The simulations yield heated core parameters in good agreement with the GEKKO-PW experimental measurements, given reasonable assumptions of laser-to-electron coupling efficiency and the distribution function of laser-produced electrons. The classical range of the hot electrons exceeds the mass density-core diameter product {rho}L by a factor of several. Anomalous stopping appears to be present and is created by the growth and saturation of an electromagnetic filamentation mode that generates a strong back-EMF impeding hot electrons on the injection side of the density maxima.
- Research Organization:
- Sandia National Laboratories
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 961659
- Report Number(s):
- SAND2004-3326J
- Journal Information:
- Proposed for publication in Physical Review Letters., Journal Name: Proposed for publication in Physical Review Letters. Journal Issue: 5 Vol. 94; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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