The influence of Stark effect on spectral characteristics of hot dense plasma

The effect of spectral line broadening under influence of ion microfield (Stark effect) may be important in opacity calculations for hot dense plasma. The method of Stark-effect accounting in quasi-static approximation is based on the diagonalization of multilevel Hamiltonian in one-electron approach. The distribution of ion microfield is obtained by using the perturbed independent particles model. Method is suitable both for low- and high-Z elements. The consideration is based on the relativistic Hartree-Fock-Slater model. Calculations are carried out with using the code THERMOS, developed at the Keldysh Institute of Applied Mathematics. A comparison of line profiles, spectral opacities and Rosseland free paths with the well-known H.Griem's and other results, obtained with the help of different codes, were made.