Kinetic simulations of laser filamentation in plasmas

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

DOI:https://doi.org/10.1063/1.859788· OSTI ID:5125878

Epperlein, E M ^[1]

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

The effects of nonlocal electron heat transport on the nonlinear evolution of both thermal and ponderomotive laser filamentation in plasmas have been modeled using the Fokker--Planck (FP) code SPARK. The code solves the FP equation for electrons, the full hydrodynamic equations for cold ions, and the paraxial wave equation for laser light, in Cartesian geometry. Filamentation simulations, under the experimental conditions reported by Young {ital et} {ital al}. (Phys. Rev. Lett. {bold 61}, 2336 (1988)), confirm recent theoretical predictions (E. M. Epperlein, Phys. Rev. Lett. {bold 65}, 2145 (1990)) that the kinetic thermal mechanism should dominate over the ponderomotive one. It is further demonstrated that it is important to include the ion hydrodynamics.

• DOE Contract Number: FC03-85DP40200
• OSTI ID: 5125878
• 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
700103* -- Fusion Energy-- Plasma Research-- Kinetics
COLD PLASMA
COMPUTER CALCULATIONS
CONFINEMENT
DIFFERENTIAL EQUATIONS
ELECTROMAGNETIC RADIATION
ENERGY TRANSFER
EQUATIONS
FOKKER-PLANCK EQUATION
HEAT TRANSFER
HYDRODYNAMIC MODEL
INERTIAL CONFINEMENT
KINETICS
LASER RADIATION
MATHEMATICAL MODELS
MAXWELL EQUATIONS
PARTIAL DIFFERENTIAL EQUATIONS
PARTICLE MODELS
PLASMA
PLASMA CONFINEMENT
PLASMA DENSITY
PLASMA SIMULATION
RADIATIONS
SIMULATION
STATISTICAL MODELS
THERMODYNAMIC MODEL