THE 4S(2)(1)S(0)-4S4P(3)P(1)(0) INTERCOMBINATION LINE IN THE ZINC-LIKE IONS - GA II, KR VII, SR IX, NB XII, MO XIII, RH XVI AND AG XVIII

Transition probabilities are calculated for the 4s(2 1) S-o-4s4p P-3 d egrees(1) intercombination line in the zinc-like ions Ga II, Kr VII, S r IX, Nb XII, Mo XIII, Rh XVI and Ag XVIII using the configuration int eraction (CI) code CIV3. The calculation involves valence shell correl ation, use of model potentials to account for core polarization and th e inclusion of relativistic effects. Adjustments are made to the diago nal elements of the Hamiltonian matrix so that eigenvalue differences agree with experimental energy differences, so effectively experimenta l energies are used for transition energies and to refine the CI mixin g coefficients of the wave functions. Both the A-values and the lifeti mes of the transition for the various ions are compared with recent ex perimental and other theoretical results. The present results are suff iciently accurate to provide a benchmark for the analysis of the exper imental data.