### 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 |

### ASJC Scopus subject areas

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

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## Cite this

Caflisch, R. E., & Levermore, C. D. (1986). Equilibrium for radiation in a homogeneous plasma.

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