Optical oscillator strengths for the oxygen isoelectronic sequence

Abstract

An analytic atomic independent particle model potential adjusted to experimental single-particle energy levels is used to generate wavefunctions for the valence and excited states of 0, F⁺¹, Ne⁺², Na⁺³, Mg⁺⁴ and Al⁺⁵. Using these wavefunctions in conjunction with the Born approximation and the LS-coupling scheme, we calculate optical oscillator strengths for excitations from the 1s ² 2s ² 2p ⁴(³ P ₂) ground state. Good agreement is obtained with experimental data. Systematic trends along the isoelectronic sequence are discussed.