Doubly excited non-autoionizing 1,3Pe and 1,3Do states of two-electron highly stripped atoms

We have investigated the doubly excited P-1,3(e) and D-1,3(o) non-autoionizing states of two-electron highly stripped atoms within the framework of the Ritz variational principle. Highly correlated wave functions are used to represent the correlation effect between the charge particles. Precise non-relativistic energy eigenvalues of 2pnp P-1(e)(n = 3-7), 2pnp P-3(e) (n = 2-6) and 2pnd D-1,3(o) (n = 3-7) states for the systems N5+, O6+, F7+, Ne8+, Na9+ and Mg10+ are reported. The present results for 2pnp P-1,3(e) state energies of O6+ and 2pnd D-1,3(o) state energies of N5+ are accurate in precision compared with the available theoretical results. The wavelengths for 2pnp P-1(e) -> 2pn'd D-1(o) (n, n' <= 6) and 2pnp P-3(e) -> 2pn'd D-3(o) (n, n' <= 6) transitions and the effective quantum numbers (n*) for 2pnp P-1,3(e) and 2pnd D-1,3(o) states have been calculated.