Photoelectron angular distributions for atomic chlorine

Abstract

Photoelectron angular distribution asymmetry parameters for photoionization to each of the three term levels of the ${\mathrm{Cl}}^{+}$ ion are calculated above the $^{1}\mathrm{S}$ ionic threshold with use of the open-shell transition-matrix method. Comparison is made with frozen-core Hartree-Fock asymmetry parameters and with the multiconfiguration Hartree-Fock results of Fielder and Armstrong. The calculated asymmetry parameters are used to estimate partial-cross-section branching ratios at 584 A\r{} from the relative experimental photoelec- tron intensity measurements of Kimura, Yamazaki, and Achiba.