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Title: Molecular-dynamic calculation of the inverse-bremsstrahlung heating of non-weakly-coupled plasmas

Abstract

A molecular dynamic (MD) code is used to calculate the inverse bremsstrahlung (IB) heating rates of a plasma as a function of density and laser intensity. The code belongs to the class of particle-particle-particle-mesh codes. Since the equations solved by the MD code are fundamental, this approach avoids several assumptions which are inherent to alternative methods, for example those which employ a Coulomb logarithm, and is not restricted to weakly coupled plasmas. The results of the MD code are compared to previously published results for plasmas of low coupling. The results of calculations for dense, moderately coupled plasmas are also presented. An analytic expression for the IB heating rate, based on a fit to the rates calculated by the MD code, is suggested. This expression includes terms nonlinear in the plasma density.

Authors:
; ;  [1]
  1. Department of Physics, University of Oxford, Clarendon Laboratory, Parks Road, Oxford OX1 3PU (United Kingdom)
Publication Date:
OSTI Identifier:
20636877
Resource Type:
Journal Article
Journal Name:
Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
Additional Journal Information:
Journal Volume: 70; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevE.70.056411; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-651X
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BREMSSTRAHLUNG; EQUATIONS; HEATING RATE; LASERS; MOLECULAR DYNAMICS METHOD; NONLINEAR PROBLEMS; PLASMA; PLASMA DENSITY; PLASMA HEATING

Citation Formats

David, N, Spence, D J, and Hooker, S M. Molecular-dynamic calculation of the inverse-bremsstrahlung heating of non-weakly-coupled plasmas. United States: N. p., 2004. Web. doi:10.1103/PhysRevE.70.056411.
David, N, Spence, D J, & Hooker, S M. Molecular-dynamic calculation of the inverse-bremsstrahlung heating of non-weakly-coupled plasmas. United States. https://doi.org/10.1103/PhysRevE.70.056411
David, N, Spence, D J, and Hooker, S M. 2004. "Molecular-dynamic calculation of the inverse-bremsstrahlung heating of non-weakly-coupled plasmas". United States. https://doi.org/10.1103/PhysRevE.70.056411.
@article{osti_20636877,
title = {Molecular-dynamic calculation of the inverse-bremsstrahlung heating of non-weakly-coupled plasmas},
author = {David, N and Spence, D J and Hooker, S M},
abstractNote = {A molecular dynamic (MD) code is used to calculate the inverse bremsstrahlung (IB) heating rates of a plasma as a function of density and laser intensity. The code belongs to the class of particle-particle-particle-mesh codes. Since the equations solved by the MD code are fundamental, this approach avoids several assumptions which are inherent to alternative methods, for example those which employ a Coulomb logarithm, and is not restricted to weakly coupled plasmas. The results of the MD code are compared to previously published results for plasmas of low coupling. The results of calculations for dense, moderately coupled plasmas are also presented. An analytic expression for the IB heating rate, based on a fit to the rates calculated by the MD code, is suggested. This expression includes terms nonlinear in the plasma density.},
doi = {10.1103/PhysRevE.70.056411},
url = {https://www.osti.gov/biblio/20636877}, journal = {Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics},
issn = {1063-651X},
number = 5,
volume = 70,
place = {United States},
year = {2004},
month = {11}
}