Abstract
The oscillator strengths and excitation energies for the ns21S0-nsnp 3P1, 1P1 transitions in neutral cadmium and mercury calculated in the configuration interaction (CI) approach based on numerical relativistic SCF wavefunctions are compared with the results of a multiconfiguration relativistic Hartree-Fock (MCRHF) scheme, which employs the same set of configurations. It is found that with careful choice of the method used to generate the valence orbitals, the relativistic configuration interaction treatment yields results comparable with those of the MCRHF approach. The influence on oscillator strengths and excitation energies of the additional nd2 and npnd configurations, which could not be included in MCRHF calculations because of difficulties with the convergence of the SCF process, is also studied and is found to be very small.
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