Excitation energies and oscillator strengths from the ${}_{}{}^1{}_{}{}^{}$${\mathit{S}}_0$ ground state to the first ${}_{}{}^3{}_{}{}^{}$${\mathit{P}}_1^{\mathit{o}}$ and ${}_{}{}^1{}_{}{}^{}$${\mathit{P}}_1^{\mathit{o}}$ excited states of Cd-like ions are calculated by using the multiconfiguration relativistic random-phase approximation including excitation channels from core electrons. The discrepancies among theories and experiments are much reduced but, in general, remain.

• Received 3 February 1993

DOI:https://doi.org/10.1103/PhysRevA.48.2453