Stark widths of doubly- and triply-ionized atom lines

In this paper, we report modifications of well known semiempirical and semiclassical approximation furmulas for Stark line-width calculations. Comparisons with experiments for doubly ionized atoms yield, as an average ratio of measured to calculated widths 1.06 ± 0.31 for a modified semiempirical formula and 0.96±0.24 for a modified semiclassical formula. For triply ionized atoms these ratios are 0.91±0.42 and 1.08±0.41, respectively. Comparison with other theoretical calculations have also been made.