Abstract
Calculations of the f-values of transitions to high Rydberg states of the alkali atoms Li, Na and K are reported and compared with recent experimental data It is shown that the g-Hartree method is particularly well suited for this type of calculation. The absolute f values obtained in first order are much closer to the measurements than are obtained by the Dirac-Fock method. Nevertheless, some discrepancies between theory and experiment persist, especially in the slopes of the df/dE curves. The authors discuss the origins of this discrepancy with reference to both the theoretical model and the experimental methods. Their conclusion is that the usual zero order scheme (Hartree-Fock) is in fact inappropriate to represent highly excited Rydberg states as compared to a g-Hartree mean field which subsumes most of the significant correlations.
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