Two-valence-electron model-potential studies of the Be I isoelectronic sequence

Abstract

Calculations of the radiative properties of the Be I isoelectronic sequence, through Ne VII, have been carried out using a semi-empirical model-potential method. Bound-bound oscillator strengths among the lowest few states of the ¹S, ³S, ¹P⁰, ¹P, ³P⁰, ³P, ¹D and ³D symmetries are tabulated. Where accurate theoretical or experimental data are available, the agreement is excellent. Results are given for the ¹S₀-³P₁⁰ intercombination oscillator strengths for fine-structure splittings in the term 2s2p ³P⁰ and 2p^{2 3}P, and for the dipole polarisability of the ground-state ions.