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

The interpretation of the core-line asymmetries found in x-ray photoemission spectra of transition metals is reexamined in the light of recent theoretical developments. The large asymmetries found in the spectra of $d$-group transition metals are interpreted in terms of an enhanced hole-electron scattering produced by the $s-d$ interaction.