Determination of atomic properties in the oxygen isoelectronic sequence

Abstract

Atomic data including energy levels, excitation energies, line strengths, transition probabilities, and weighed oscillator strengths for 2s22p4, 2s2p5 and 2p6 levels are evaluated for O-like ions (Kr, Rb, Sr, Y, Nb, Zr, Mo, La, Ce) by using Multiconfiguration Dirac-Hartree-Fock (MCDHF) approach. Valence and core-valence correlation effects were accounted for through single-double multireference (SD − MR) expansions to increasing sets of active orbitals. To confirm the accuracy of present results, independent calculations have been performed by using fully relativistic Flexible Atomic Code (FAC). Comparisons are made between our two different set of results, as well as with the other available experiments measurements and theoretical calculations. The present data are accurate enough for identification and are also useful for modeling and diagnosis fusion plasmas. We have reported many new atomic data which is not available in the literature and we believe our presented data can be considered as a benchmark of other calculations.

Keywords

• Atomic data
• Energy levels
• MCDF