Prediction of New Multiplet Structure in Photoemission Experiments

Correlation effects are included in a detailed theoretical study of the multiplet structure observed by x-ray photoelectron spectroscopy. This correlated multiplet hole theory resolves the difficulties of earlier multiplet hole theory studies: It correctly determines the magnitude of the observed $2\mathbf{s}$ and $3\mathbf{s}$ (doublet) splittings and their intensity rations, and predicts the existence of new structure for the $3\mathbf{s}$ binding energy splittings—structure which does not exist in one-electron theory and which has now been confirmed by Kowalczyk et al.