Broadening of dielectric satellite lines in dense plasmas

Publisher Website
Google Scholar
Abstract
The authors calculate shift and broadening effects on helium-like dielectronic satellite lines caused by electrons and ions in a dense plasma. The electron effect has been treated by applying the quantum mechanical impact theory to singly and doubly excited atomic states. The ions of plasmas modify appreciably atomic energy levels and autoionisation rates via the low-frequency component of the electric microfield. It has been shown that the quasidegenerate state perturbation theory is well adapted for treating those two ion effects. Numerical values are given for the two typical helium-like transitions: (2p2)3P to (1s2p)3P and (2s2p)3P to (1s2s)3S.