Relativistic configuration-interaction oscillator strength calculations with ab initio model potential wavefunctions

The relativistic configuration-interaction (CI) method with numerical Dirac-Fock wavefunctions generated using an ab initio model potential with non-integer outermost core shell occupation number to improve the efficiency of the CI representation of core-valence electron correlation, is used to calculate oscillator strengths for the lowest spin-allowed and spin-forbidden ns(2) S-1(0)-nsnp P-1(1), P-3(1) transitions in some systems with two valence electrons. The present results are compared with our earlier data obtained with core-valence correlation represented in the semiclassical core polarization picture.