Equilibrium for radiation in a homogeneous plasma

Russel E. Caflisch; C. David Levermore

doi:10.1063/1.865928

Equilibrium for radiation in a homogeneous plasma

Russel E. Caflisch, C. David Levermore

Mathematics

Research output: Contribution to journal › Article › peer-review

Abstract

Entropy increase and comparison principles are found for the Fokker-Planck equation for the radiation field in a homogeneous plasma with constant electron temperature. When emission-absorption is neglected, this is used to find equilibrium distributions that have the form of a Planck distribution plus a δ function at zero photon energy. For distributions below the Planck and with emission-absorption included, a rate of entropy increase is obtained. Numerical results confirm these conclusions.

Original language	English (US)
Pages (from-to)	748-752
Number of pages	5
Journal	Physics of Fluids
Volume	29
Issue number	3
DOIs	https://doi.org/10.1063/1.865928
State	Published - Mar 1 1986

ASJC Scopus subject areas

Computational Mechanics
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Fluid Flow and Transfer Processes

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10.1063/1.865928

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abstract = "Entropy increase and comparison principles are found for the Fokker-Planck equation for the radiation field in a homogeneous plasma with constant electron temperature. When emission-absorption is neglected, this is used to find equilibrium distributions that have the form of a Planck distribution plus a δ function at zero photon energy. For distributions below the Planck and with emission-absorption included, a rate of entropy increase is obtained. Numerical results confirm these conclusions.",

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AB - Entropy increase and comparison principles are found for the Fokker-Planck equation for the radiation field in a homogeneous plasma with constant electron temperature. When emission-absorption is neglected, this is used to find equilibrium distributions that have the form of a Planck distribution plus a δ function at zero photon energy. For distributions below the Planck and with emission-absorption included, a rate of entropy increase is obtained. Numerical results confirm these conclusions.

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Equilibrium for radiation in a homogeneous plasma

Abstract

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