The 4s2 1S0-4s4p3P1ointercombination line in the zinc-like ions: Ga II, Kr VII, Sr IX, Nb XII, Mo XIII, Rh XVI and Ag XVIII

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Abstract
Transition probabilities are calculated for the 4s2 1S0 -4s4p 3P1o intercombination line in the zinc-like ions Ga II, Kr VII, Sr IX, Nb XII, Mo XIII, Rh XVI and Ag XVIII using the configuration interaction (CI) code CIV3. The calculation involves valence shell correlation, use of model potentials to account for core polarization and the inclusion of relativistic effects. Adjustments are made to the diagonal elements of the Hamiltonian matrix so that eigenvalue differences agree with experimental energy differences, so effectively experimental energies are used for transition energies and to refine the CI mixing coefficients of the wave functions. Both the A-values and the lifetimes of the transition for the various ions are compared with recent experimental and other theoretical results. The present results are sufficiently accurate to provide a benchmark for the analysis of the experimental data.