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Title: Radiative heat transport instability in a laser produced inhomogeneous plasma

A laser produced high-Z plasma in which an energy balance is achieved due to radiation emission and radiative heat transfer supports ion acoustic instability. A linear dispersion relation is derived, and instability is compared to the radiation cooling instability [R. G. Evans, Plasma Phys. Controlled Fusion 27, 751 (1985)]. Under conditions of indirect drive fusion experiments, the driving term for the instability is the radiative heat flux and, in particular, the density dependence of the radiative heat conductivity. A specific example of thermal Bremsstrahlung radiation source has been considered. This instability may lead to plasma jet formation and anisotropic x-ray generation, thus affecting inertial confinement fusion related experiments.
Authors:
 [1] ;  [2] ;  [3]
  1. P. N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow 119991 (Russian Federation)
  2. (Russian Federation)
  3. Theoretical Physics Institute, University of Alberta, Edmonton T6G 2E1 Alberta (Canada)
Publication Date:
OSTI Identifier:
22490066
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 8; Other Information: (c) 2015 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; ANISOTROPY; BREMSSTRAHLUNG; COOLING; DISPERSION RELATIONS; ENERGY BALANCE; HEAT FLUX; INERTIAL CONFINEMENT; INHOMOGENEOUS PLASMA; INSTABILITY; LASER-PRODUCED PLASMA; PLASMA JETS; RADIANT HEAT TRANSFER; RADIATION SOURCES; X RADIATION