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arXiv · 1110.3432

On the absorption of radiation by the negatively charged hydrogen ion. I. General theory and construction of the wave functions

Alexei M. Frolov
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Abstract

The absorption of infrared and visible radiation from stellar emission spectra by the negatively charged hydrogen ions H$^{-}$ is considered. We derive the explicit formulas for the bound-free absorption coefficient $a_ν$ for the negatively charged hydrogen ion ${}^{\infty}$H$^{-}$ and its isotopes ${}^{1}$H$^{-}$ (protium) and ${}^{2}$H$^{-}$ (deuterium or D$^{-}$). The bound-free absorption coefficient $a_ν$ is used to evaluate the actual absorption of infrared and visible radiation by the H$^{-}$ ion in photospheres of many cold stars with surface temperatures $T_s \le$ 8,250 $K$.

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Alexei M. Frolov. 2013-12-10. On the absorption of radiation by the negatively charged hydrogen ion. I. General theory and construction of the wave functions. https://arxiv.org/abs/1110.3432

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