Generalized oscillator strength for Na 3s-3p transition
Zhifan Chen, Alfred Z Msezane
Abstract
Generalized oscillator strengths (GOS's) for the Na 3s -3p transition have been investigated using the spin-polarized technique of the random phase approximation with exchange (RPAE) and the first Born approximation (FBA), focussing our attention on the position of the minimum. Intershell correlations are found to influence the position of the minimum significantly, but hardly that of the maximum. The RPAE calculation predicts for the first time the positions of the minimum and maximum at momentum transfer, K values of 1.258 a.u. and 1.61 a.u., respectively. The former value is within the range of values extracted from experimental measurements, K=1.0-1.67 a.u.. We recommend careful experimental search for the minimum around the predicted value for confirmation.
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