Experimental Stark widths of the 3s ${}_{}{}^2{}_{}{}^{}3\mathrm{p}$ ${}_{}{}^2{}_{}{}^{}\mathrm{°}$ transitions in the Li-like ions C iv, N v, O vi, and Ne viii 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 ${\mathit{Z}}^{\mathrm{-}2}$, 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.

• Received 13 January 1992

DOI:https://doi.org/10.1103/PhysRevA.45.8795