Conservative algorithms for nonMaxwellian plasma kinetics
Abstract
Here, we present a numerical model and a set of conservative algorithms for NonMaxwellian plasma kinetics with inelastic collisions. These algorithms selfconsistently solve for the time evolution of an isotropic electron energy distribution function interacting with an atomic state distribution function of an arbitrary number of levels through collisional excitation, deexcitation, as well as ionization and recombination. Electronelectron collisions, responsible for thermalization of the electron distribution, are also included in the model. The proposed algorithms guarantee mass/charge and energy conservation in a single step, and is applied to the case of nonuniform gridding of the energy axis in the phase space of the electron distribution function. Numerical test cases are shown to demonstrate the accuracy of the method and its conservation properties.
 Authors:

 Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
 Air Force Office of Scientific Research, Arlington, VA (United States)
 Publication Date:
 Research Org.:
 Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
 Sponsoring Org.:
 USDOE
 OSTI Identifier:
 1414363
 Alternate Identifier(s):
 OSTI ID: 1411992
 Report Number(s):
 LLNLJRNL735721
Journal ID: ISSN 1070664X; TRN: US1800692
 Grant/Contract Number:
 AC5207NA27344
 Resource Type:
 Accepted Manuscript
 Journal Name:
 Physics of Plasmas
 Additional Journal Information:
 Journal Volume: 24; Journal Issue: 12; Journal ID: ISSN 1070664X
 Publisher:
 American Institute of Physics (AIP)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 70 PLASMA PHYSICS AND FUSION
Citation Formats
Le, Hai P., and Cambier, Jean Luc. Conservative algorithms for nonMaxwellian plasma kinetics. United States: N. p., 2017.
Web. doi:10.1063/1.4998242.
Le, Hai P., & Cambier, Jean Luc. Conservative algorithms for nonMaxwellian plasma kinetics. United States. doi:10.1063/1.4998242.
Le, Hai P., and Cambier, Jean Luc. Fri .
"Conservative algorithms for nonMaxwellian plasma kinetics". United States. doi:10.1063/1.4998242. https://www.osti.gov/servlets/purl/1414363.
@article{osti_1414363,
title = {Conservative algorithms for nonMaxwellian plasma kinetics},
author = {Le, Hai P. and Cambier, Jean Luc},
abstractNote = {Here, we present a numerical model and a set of conservative algorithms for NonMaxwellian plasma kinetics with inelastic collisions. These algorithms selfconsistently solve for the time evolution of an isotropic electron energy distribution function interacting with an atomic state distribution function of an arbitrary number of levels through collisional excitation, deexcitation, as well as ionization and recombination. Electronelectron collisions, responsible for thermalization of the electron distribution, are also included in the model. The proposed algorithms guarantee mass/charge and energy conservation in a single step, and is applied to the case of nonuniform gridding of the energy axis in the phase space of the electron distribution function. Numerical test cases are shown to demonstrate the accuracy of the method and its conservation properties.},
doi = {10.1063/1.4998242},
journal = {Physics of Plasmas},
number = 12,
volume = 24,
place = {United States},
year = {2017},
month = {12}
}
Figures / Tables:
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