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 2s and 3s (doublet) splittings and their intensity rations, and predicts the existence of new structure for the 3s binding energy splittings-structure which does not exist in one-electron theory and which has now been confirmed by Kowalczyk et al. © 1973 The American Physical Society.