4.2 Article

Theoretical radiative lifetimes of levels in singly ionized lanthanum

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IOP PUBLISHING LTD
DOI: 10.1088/0953-4075/42/18/185002

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  1. University of Cracow Statutory Research Grant

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Theoretical radiative lifetimes of 29 levels in singly ionized lanthanum are determined using Cowan's 'Hartree-Fock and relativistic corrections' (HFR) method modified by us to include core-valence electron correlations in the core-polarization picture. The configuration mixing coefficients have been determined semiempirically through a least-squares fitting procedure treating Slater and spin-orbit integrals as free parameters. The results obtained compared with available experimental and other theoretical data confirm the importance of valence-core correlation effects.

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