Photoionization of I${}^{+}$

Abstract

Photoionization of the I${}^{+}$ ion in the energy range of the 4d giant resonance has been studied using our recently developed random-phase approximation with exchange (RPAE) method. Photoionization cross sections for the I${}^{+}$ $4d-\epsilon f,\epsilon p$, $5s-\epsilon p$, $5p-\epsilon s,\epsilon d$ have been obtained for each term of the ground state. Calculations include all the intra-shell and inter-shell coupling among the 4d, $5s$, and $5p$ subshells. Our maximum cross section for the I${}^{+}$ 4d giant resonance, 23.12 MB at 90.24 eV agrees excellently with the recent measurement, 23(3) at 90 eV.

8 page 5 figures