A relativistic CI study on OIII: Wavefunctions, excitation energies and transition probabilities

The relativistic CI method is used to determine N-electron wavefunctions for the 1s22s22p2 (3P0, 3P2, 1D2), 1s22p43P2 even levels, and then the 1s22s2p3 (3D1, 3P1, 3S1, 1P1), 1s22s22p3s (3P1 and 1P1), 1s22s22p3d (3D1, 3P1, 1P1) J=1 OIII levels. Excitation energies and emission probabilities between these levels are reported in the electric dipole approximation, both for the Coulomb and the Babushkin gauges. ns, anti np, np, nd and nd (n≤17) numerical basis functions have been used for the construction of CSF's entering the CI expansion for the ASF's of these levels. Radiative matrix elements of the type calculated here within the framework of the relativistic CI method, may be used in laser assisted spectroscopic studies of atoms and ions. (orig.)