Spectroscopy of Inner Atomic Levels: Electric Field Splitting of Corep32Levels in Heavy Atoms

Abstract
Splittings of atomic core p32 levels caused by internal electric field gradients have been observed in compounds of Th, U, and Pu by means of photoelectron and internal-conversion spectroscopy. The magnitude of the splitting varies with the element and specific compound examined, and it may be considerably enhanced by application of a strong external field.