Centrifugal barrier perturbation of the <i>n</i> f2F series in Ba II

Abstract Hartree-Fock calculations for the nf 2F0 series of Ba II are reported. Several of the nf wavefunctions are found to be shared between the inner and the outer wells of the double valley potential. The resulting anomalies in intensity, spin-orbit splitting and quantum defect provide a qualitative explanation for some recent observations.

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