The inverse bremsstrahlung absorption coefficients and Gaunt factors in astrophysical plasmas

23rd International Conference on Spectral Line Shapes

Mihajlov, A.A.^1 ; Srekovi, V.A.^1 ; Sakan, N.M.^1 ; Ignjatovi, Lj M^1 ; Simi, Z.^2 ; Dimitrijevi, M.S.^2,3,4

University of Belgrade, Institute of Physics, P. O. Box 57, Belgrade

11001, Serbia^1

Astronomical Observatory, Volgina 7, Belgrade 74

11160, Serbia^2

IHIS-Technoexperts, Beanijska 23, Zemun

11080, Serbia^3

Observatoire de Paris, Meudon Cedex

92195, France^4

关键词: Absorption co-efficient;    Astrophysical plasma;    Coulomb model;    Electron ions;    Inverse bremsstrahlung absorption;    Inverse bremsstrahlungs;    Stellar atmospheres;    Wavelength regions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/810/1/012059/pdf
DOI  :  10.1088/1742-6596/810/1/012059

来源: IOP

【 摘 要 】

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 1013cm3to 3 • 1019cm3and temperatures from 3000 K to 50000 K within the wavelength region 100 nm ≤ λ ≤ 3000 nm.