### 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) |
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Pages (from-to) | 748-752 |

Number of pages | 5 |

Journal | Physics of Fluids |

Volume | 29 |

Issue number | 3 |

DOIs | |

State | Published - Mar 1 1986 |

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### ASJC Scopus subject areas

- Condensed Matter Physics

### Cite this

*Physics of Fluids*,

*29*(3), 748-752. https://doi.org/10.1063/1.865928

**Equilibrium for radiation in a homogeneous plasma.** / Caflisch, Russel; Levermore, C. David.

Research output: Contribution to journal › Article

*Physics of Fluids*, vol. 29, no. 3, pp. 748-752. https://doi.org/10.1063/1.865928

}

TY - JOUR

T1 - Equilibrium for radiation in a homogeneous plasma

AU - Caflisch, Russel

AU - Levermore, C. David

PY - 1986/3/1

Y1 - 1986/3/1

N2 - 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.

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.

UR - http://www.scopus.com/inward/record.url?scp=84964318945&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84964318945&partnerID=8YFLogxK

U2 - 10.1063/1.865928

DO - 10.1063/1.865928

M3 - Article

VL - 29

SP - 748

EP - 752

JO - Physics of Fluids

JF - Physics of Fluids

SN - 1070-6631

IS - 3

ER -