Oscillator strengths by perturbation theory

Author: Ali M.   Crossley Richard  

Publisher: Taylor & Francis Ltd

ISSN: 1362-3028

Source: Molecular Physics, Vol.15, Iss.4, 1968-01, pp. : 397-404

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Abstract

Oscillator strengths for dipole transitions between 1 s 2 3 s 2 S, 1 s 2 3 p 2 P and 1 s 2 3 d 2 D states of the lithium isoelectronic sequence in the L-S coupling scheme have been calculated in the Hartree-Fock approximation by perturbation theory through the use of Dalgarno's interchange theorem. The results compare very favourably with the analytical Hartree-Fock results.