5f-Electron Localization in Uranium Compounds

Abstract
Observed 7-eV satellites in the x-ray—photoemission spectra of UGa2 and other B-group compounds are shown to be due to two-hole final states as confirmed by existing Auger data. The presence of these satellites is an indication for a weak fd hybridization and, when compared to uranium—transition-metal compounds, increased 5f localization.