Line shapes for the n=5 to n=34 transitions of lithium-like ions for laboratory X-ray lasers

摘要

A theoretical model and corresponding computer code HELM developed to calculate line profiles from high-Z emitters of H, He, Li isosequences in hot plasmas are described. Line profile calculation involves quasi-static ion broadening, impact electron broadening, natural and Doppler broadening. Line profiles are calculated for the n $EQ 5 to n $EQ 3 transitions of Li-like AlXI and CaXVIII ions as applied to the conditions of recombination X-ray laser experiments and for the n $EQ 5 to n $EQ 4 transitions of Li-like GeXXX ion for theoretical investigation of the laboratory X-ray laser scheme with recombination radiation photopumping. The results of comparison between the experimental data for the linewidth of the 5F-3D AlXI line and calculated values at two different plasma temperatures are analyzed in detail.