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Fokker–Planck modeling of electron transport in laser-produced plasmas

Published online by Cambridge University Press:  09 March 2009

E.M. Epperlein
E.M. Epperlein
Affiliation:
Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623–1299
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Abstract

Fokker-Planck (FP) codes have become useful tools for modeling nonlocal heat-transport phenomena in laser-produced plasmas. Several possible simplifications to the FP equation as well as different numerical techniques available for its solution are investigated. The most robust and efficient approach is found to involve the diffusive approximation of the FP equation and the alternating-direction-implicit method of solution. The SPARK FP code, which has been developed along these principles, is described in detail. It incorporates fluid ions and solves for transport on either a two-dimensional Eulerian grid or a one-dimensional Lagrangian grid. Sample simulation results are presented, together with a discussion of possible improvements to the code.

Type
Research Article
Information
Laser and Particle Beams , Volume 12 , Issue 2 , June 1994 , pp. 257 - 272
Copyright
Copyright © Cambridge University Press 1994

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