Propagation of radiation in fluctuating multiscale plasmas. II. Kinetic simulations

Journal Article · Thu Nov 15 00:00:00 EST 2012 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4767641· OSTI ID:22068923

Pal Singh, Kunwar; Robinson, P A; Cairns, Iver H; Tyshetskiy, Yu ^[1]

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1. School of Physics, University of Sydney, Sydney, NSW 2006 (Australia)

A numerical algorithm is developed and tested that implements the kinetic treatment of electromagnetic radiation propagating through plasmas whose properties have small scale fluctuations, which was developed in a companion paper. This method incorporates the effects of refraction, damping, mode structure, and other aspects of large-scale propagation of electromagnetic waves on the distribution function of quanta in position and wave vector, with small-scale effects of nonuniformities, including scattering and mode conversion approximated as causing drift and diffusion in wave vector. Numerical solution of the kinetic equation yields the distribution function of radiation quanta in space, time, and wave vector. Simulations verify the convergence, accuracy, and speed of the methods used to treat each term in the equation. The simulations also illustrate the main physical effects and place the results in a form that can be used in future applications.

• OSTI ID: 22068923
• Journal Information: Physics of Plasmas, Vol. 19, Issue 11; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ACCURACY
ALGORITHMS
CONVERGENCE
DAMPING
DIFFUSION
DISTRIBUTION FUNCTIONS
ELECTROMAGNETIC RADIATION
KINETIC EQUATIONS
MODE CONVERSION
NUMERICAL SOLUTION
PLASMA
PLASMA SIMULATION
REFRACTION
SCATTERING
SPATIAL DISTRIBUTION
TIME DEPENDENCE