Abstract
Cross sections and angular asymmetry parameters for the photoionisation of Ag4d105d2D1/2 and Cu3d104d2D1/2 states are calculated in the Hartree-Fock approximation with full exchange considered. Accurate single-configuration wavefunctions from MCHF are used for the initial excited states. The asymmetry parameter, beta , shows the anticipated rapid variation in the vicinity of the l to l-1 and the l to l+1 minima in the cross sections. Hence, the predicted multi-minima in the photoionisation cross sections of excited atomic d subshells can also be investigated experimentally through the measurement of beta . The authors infer that in the threshold region correlations are small and affect only the sigma epsilon p partial cross section. Significant disagreement exists between the Hartree-Fock and the Hartree-Slater approximations regarding the prediction of the positions of the minima.
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