Stark broadening of spectral lines along the isoelectronic sequence of Li

Abstract
Experimental Stark widths of the 3s 3p2 °2 transitions in the Li-like ions C i v, N v, O v i, and Ne v i i i are reported. The measurements were performed for a set of plasma parameters so that the density and temperature behavior of the Stark widths could be observed and compared with calculations. The experimental results did not show a scaling with Z2, where Z is the spectroscopic charge number, which is expected from theoretical calculations in the electron-impact approximation. Furthermore, deviations from linear scaling appear for Z=8.

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