Stark broadening parameters of Ar II and Ar III lines: Comparison of semiclassical calculations

Abstract

For many applications, the semiclassical, theoretical calculations of Stark broadening parameters of isolated non-hydrogenic ion lines proved useful and reasonably accurate for plasma electron density determination. Several attempts were carried out to improve the calculation procedure of Stark broadening parameters and, in this way, to increase the accuracy of laboratory and astrophysical plasmas and opacity calculations. In this work for the test ions, we selected singly and doubly ionized argon lines. These ions are chosen for several reasons. First, among several studies, there are detailed Ar II calculations by Griem and coworkers, Hamdi et al., and by Blagojević and Konjević for singly and Hamdi et al.for doubly ionized argon lines. These large sets of data facilitate the extension of our work on improving semiclassical calculations. Second, argon gas applications as a plasma matrix are numerous, and reliable plasma diagnostics are of utmost importance for determining electron density, one of the essential plasma parameters for plasma modeling.