期刊
EPL
卷 117, 期 3, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1209/0295-5075/117/35001
关键词
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资金
- European Union
- COST Action [MP1208]
- Czech Ministry of Education, Youth and Sports [LC528, LM2010014]
- Italian MIUR [PRIN 2012AY5LEL]
- EUROfusion Consortium [633053]
- Sapienza project [C26A15YTMA]
- European Regional Development Fund [CZ.02.1.01/0.0/0.0/15008/0000162]
We report measurements of parametric instabilities and hot electron generation in a laser intensity regime up to 6 x 10(15) W/cm(2), typical of the shock ignition approach to inertial fusion. Experiments performed at the PALS laboratory in Prague show that the incident laser energy losses are dominated by Stimulated Brillouin Scattering (SBS) rather than by Stimulated Raman Scattering (SRS) or Two-Plasmon Decay (TPD). Results are compared to hydrodynamics simulations using a code that includes self-consistent calculations of non-linear laser plasma interactions and accounts for the laser intensity statistics contained in the beam speckles. Good agreement is found for the backscattered SRS light, and for temperature and flux of hot electrons. The effect of high-intensity speckles on backscattered SRS is also underlined numerically and experimentally. Copyright (C) EPLA, 2017
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