Core-line asymmetries in the x-ray-photoemission spectra of metals

Abstract

Core-line asymmetries have been observed in the x-ray-photoemission spectra of a number of metals. They are ascribed to the interaction of the suddenly created potential of the photohole with the conduction electrons. A comparison of the experimental line shapes with those predicted by a theoretical calculation gives reasonable agreement. The procedure makes it possible to measure the term that quenches the x-ray absorption threshold singularity and shows that it can be substantial.