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

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.
Authors:
 [1] ; ;  [2] ; ;  [3] ;  [4] ;  [5] ; ;  [6] ;  [7]
  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)
Publication Date:
OSTI Identifier:
22493829
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 23; Journal Issue: 1; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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