Bound-state excitation in ion-ion collision as related to the modeling of x-ray lasers with Li-like ions

摘要

Within the framework of x-ray laser research using the recombination of heliumlike ions with free electrons to produce lithiumlike ions in expanding and cooling hot plasmas, we present a set of spectroscopic data required to improve the gain modeling. We estimate the cross section and rate for ion-impact excitation in aluminum Li-like lasing medium using the two-state approximation for transitions caused by a multipole interaction. The approximation used for atomic data calculation is presented.