Nonlocal heat transport effects on the filamentation of light in plasmas

Journal Article · Wed Jul 01 04:00:00 EDT 1992 · Physics of Fluids B; (United States)

DOI:https://doi.org/10.1063/1.860025· OSTI ID:7105162

Epperlein, E M; Short, R W ^[1]

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1. University of Rochester, 250 East River Road, Rochester, New York 14623-1299 (United States)

The nonlocal nature of electron heat transport in hot coronal plasmas is investigated. Its effect on the linear theory of laser filamentation is reviewed. The nonlinear evolution of filaments is modeled with the two-dimensional Fokker--Planck code spark, for the conditions of recent filamentation experiments. Simulation results agree with experimental data and imply the dominance of thermal over ponderomotive filamentation. The increased importance of the thermal filamentation mechanism is attributed to heat flux inhibition arising from nonlocal electron transport. The potential implications of filamentation for inertial-confinement-fusion target designs are discussed.

• DOE Contract Number: FC03-85DP40200
• OSTI ID: 7105162
• Journal Information: Physics of Fluids B; (United States), Journal Name: Physics of Fluids B; (United States) Vol. 4:7; ISSN 0899-8221; ISSN PFBPE
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700310 -- Plasma Confinement-- (1992-)
700330* -- Plasma Kinetics
Transport
& Impurities-- (1992-)
700340 -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
BEAM-PLASMA SYSTEMS
COMPUTER CODES
CONFINEMENT
DIFFERENTIAL EQUATIONS
EQUATIONS
FOKKER-PLANCK EQUATION
HOT PLASMA
INERTIAL CONFINEMENT
LASER FUSION REACTORS
PARTIAL DIFFERENTIAL EQUATIONS
PLASMA
PLASMA CONFINEMENT
THERMONUCLEAR REACTORS
TRANSPORT THEORY