The inverse bremsstrahlung absorption coefficients and Gaunt factors in astrophysical plasmas

In this paper we present the method of determination of the electron-ion inverse Bremsstrahlung characteristics in order to cover the corresponding stellar atmosphere models. The used method is based on cut-off Coulomb model potential. It is shown that determination of these characteristics i.e. the absorption coefficients and Gaunt factors can be successfully performed in the region of electron densities from 1013cm3 to 3 1019cm3 and temperatures from 3000 K to 50000 K within the wavelength region 100 nm ≤ λ ≤ 3000 nm.