On the Stark Broadening of Singly Ionized Argon Lines

Abstract

Using a semi-classical formalism which includes Debye shielding, Stark broadening parameters of various components within the 4 s 2P - 4 p ´ 2P0 multiplet and the 4 p - 4 d (2P 0 - 2P, 2D0 - 2 P, 2D0 - 2D) supermutiplet of Ar II are computed. We show that when various components of a multiplet (supermultiplet or transition array) are broadened inequally by an embedded closelying perturbing level, use of a perturber param eter cut-off at the Debye length can restrain the calculated differences between Stark widths within the multiplet.