Abstract

The influence of nonlinear interference effects (NIEF) on line shape is investigated. Ion dynamics is taken into account within the frame of Model Microfield Method. The present research is performed within atomic density matrix formalism. Numerical calculations of both lifetimes of radiating states and line shapes are performed for the spectral doublet (1s–2s)21S-(1s–4p)41P, (1s–2s)21S-(1s–4d)41D of helium-like multicharged ions in hot dense plasmas. It is found that ion microfield essentially influences on the difference of populations of radiating 41P, 41D states NIEF is contribution in both allowed and forbidden components is calculated at various plasma conditions. Results demonstrate that account of NIEF essential in the calculation of line shapes of multicharged ions.

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