Systematic trends along the potassium sequence: Study of ns2S–mp2P0 transitions

Abstract

The quantum defect orbital (QDO) method, with the use of a core polarization-corrected dipole transition operator, was employed to determine oscillator strengths for potassium and some of its isoelectronic ions (CaII–CrVI). The inclusion of core-valence polarization effects leads to a general improvement of the QDO f values. Systematic trends of individual oscillator strengths along the isoelectronic sequence are also shown in a graphical form.