Abstract
The effect of radiation trapping in the atomic transitions of Ne-like Kr plasma has been investigated theoretically. First, the relative sublevel populations and gains for some specific 3s–3p transitions in the 27 levels of 2p6 and 2p5 3l configurations were calculated in the range of electron density 1018–1023 cm-3 for the electron temperature of 1 and 3 keV. Next, the influence of resonance radiation trapping was approximated by introducing the effective rates for some spontaneous emissions. Then, we recalculated the gains with these modified rates. It is noted that the effect of radiation trapping becomes significant at high electron densities and even increases the gain for some lasin transitions
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