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

Abstract

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.

Authors:
; ; ;  [1]
  1. School of Physics, University of Sydney, Sydney, NSW 2006 (Australia)
Publication Date:
OSTI Identifier:
22068923
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 19; Journal Issue: 11; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Pal Singh, Kunwar, Robinson, P. A., Cairns, Iver H., and Tyshetskiy, Yu. Propagation of radiation in fluctuating multiscale plasmas. II. Kinetic simulations. United States: N. p., 2012. Web. doi:10.1063/1.4767641.
Pal Singh, Kunwar, Robinson, P. A., Cairns, Iver H., & Tyshetskiy, Yu. Propagation of radiation in fluctuating multiscale plasmas. II. Kinetic simulations. United States. doi:10.1063/1.4767641.
Pal Singh, Kunwar, Robinson, P. A., Cairns, Iver H., and Tyshetskiy, Yu. Thu . "Propagation of radiation in fluctuating multiscale plasmas. II. Kinetic simulations". United States. doi:10.1063/1.4767641.
@article{osti_22068923,
title = {Propagation of radiation in fluctuating multiscale plasmas. II. Kinetic simulations},
author = {Pal Singh, Kunwar and Robinson, P. A. and Cairns, Iver H. and Tyshetskiy, Yu.},
abstractNote = {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.},
doi = {10.1063/1.4767641},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 11,
volume = 19,
place = {United States},
year = {2012},
month = {11}
}