Free-free absorption coefficients and Gaunt factors for dense hydrogen-like stellar plasma

Abstract

In this work, we present a study dedicated to determination of the inverse bremsstrahlung absorption coefficients and the corresponding Gaunt factor of dense hydrogen-like stellaratmosphere plasmas where electron density and temperature change in a wide range. A method suitable for this wide range is suggested and applied to the inner layers of the solar atmosphere, as well as the plasmas of partially ionized layers of some other stellar atmospheres (for example, some DA and DB white dwarfs) where the electron densities vary from 1014 cm-3 to 1020 cm-3 and temperatures from 6000K to 300 000K in the wavelength region of 10 nm≤λ≤3000 nm. The results of the calculations are illustrated by the corresponding figures and tables.