Resonance between heat-carrying electrons and Langmuir waves in inertial confinement fusion plasmas

Journal Article · Fri Jan 15 00:00:00 EST 2016 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4939603· OSTI ID:22493829

Rozmus, W. ^[1]; Chapman, T.; Berger, R. L. ^[2]; Brantov, A.; Bychenkov, V. Yu. ^[3]; Winjum, B. J. ^[4]; Brunner, S. ^[5]; Tableman, A.; Tzoufras, M. ^[6]; Glenzer, S. ^[7]

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1. Department of Physics, University of Alberta, Edmonton, Alberta T6G 2G7 (Canada)
2. Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)
3. P.N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow 119991 Russia and Center for Fundamental and Applied Research, VNIIA, ROSATOM, 127055 Moscow (Russian Federation)
4. Department of Electrical Engineering, UCLA, Los Angeles, California 90095 (United States)
5. Association EURATOM-Confederation Suisse, EPFL, 1015 Lausanne (Switzerland)
6. Department of Physics and Astronomy, UCLA, Los Angeles, California 90095 (United States)
7. LCLS, Stanford, California 94025 (United States)

In ignition scale hot plasmas, temperature gradients and thermal transport modify electron distributions in a velocity range resonant with Langmuir waves typical of those produced by stimulated Raman scattering. We examine the resultant changes to the Landau damping experienced by these Langmuir waves and the levels of thermal plasma fluctuations. The form factor and Thomson scattering cross-section in such plasmas display unique characteristics of the background conditions. A theoretical model and high-order Vlasov-Fokker-Planck simulations are used in our analysis. An experiment to measure changes in thermal plasma fluctuation levels due to a thermal gradient is proposed.

• OSTI ID: 22493829
• Journal Information: Physics of Plasmas, Vol. 23, Issue 1; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CROSS SECTIONS
ELECTRONS
FOKKER-PLANCK EQUATION
FORM FACTORS
HEAT TRANSFER
HOT PLASMA
INERTIAL CONFINEMENT
LANDAU DAMPING
RAMAN EFFECT
TEMPERATURE GRADIENTS
THERMONUCLEAR IGNITION
THOMSON SCATTERING