A practical nonlocal model for electron heat transport in laser plasmas

Journal Article · Fri Nov 01 04:00:00 EST 1991 · Physics of Fluids B; (United States)

DOI:https://doi.org/10.1063/1.859789· OSTI ID:5176525

Epperlein, E M; Short, R W ^[1]

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1. Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York (USA)

A brief review of nonlocal heat-flow models is presented. Numerical difficulties associated with their implementation, as recently demonstrated by Prasad and Kershaw (Phys. Fluids B {bold 1}, 2430 (1989)), are discussed and a simple solution is proposed. A new nonlocal heat-flow formula is developed, based on numerical simulations of the decay of linearized thermal waves, using the electron Fokker--Planck code SPARK. The formula is tested by modeling the full implosion of a CH shell driven by 351 nm laser irradiation. Results are shown to be in good agreement with SPARK simulations.

• DOE Contract Number: FC03-85DP40200
• OSTI ID: 5176525
• Journal Information: Physics of Fluids B; (United States), Journal Name: Physics of Fluids B; (United States) Vol. 3:11; ISSN 0899-8221; ISSN PFBPE
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
COMPUTER CALCULATIONS
CONFINEMENT
DIFFERENTIAL EQUATIONS
ELECTROMAGNETIC RADIATION
ELECTRON DENSITY
ELECTRON TEMPERATURE
EQUATIONS
FOKKER-PLANCK EQUATION
HEAT FLOW
HEAT FLUX
INERTIAL CONFINEMENT
LASER FUSION REACTORS
LASER-PRODUCED PLASMA
PARTIAL DIFFERENTIAL EQUATIONS
PLASMA
PLASMA CONFINEMENT
PLASMA SIMULATION
RADIATIONS
SIMULATION
TEMPERATURE GRADIENTS
THERMAL RADIATION
THERMONUCLEAR REACTORS