On thermalization of radiation in hydrostatic atmospheres

M. I. Gornostaev

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arXiv · 2203.12589

On thermalization of radiation in hydrostatic atmospheres

M. I. Gornostaev

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Abstract

The problem of thermalization of radiation within a self-emitting hydrogen isothermal atmosphere is considered for the case of a hydrostatic profile of the plasma density. The probabilistic approach to define the thermalization depth for the photon of a given frequency is used. Quantitative conclusions are made on the value of the optical depth at which the radiation can be viewed as thermalized up to a given frequency. The analytical and numerical solutions of the radiative transfer equation confirm the obtained results. The frequency dependencies of the probability of free-free absorption of a photon due to single interaction in a cold nonmagnetized and magnetized plasma are calculated.

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M. I. Gornostaev. 2022-03-23. On thermalization of radiation in hydrostatic atmospheres. https://arxiv.org/abs/2203.12589

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