Resonant vacuum ultraviolet photoemission of atomic Fe, Co and Ni

Abstract

The photoemission of atomic Fe, Co and Ni has been obtained in the photon energy range 50-80 eV. The strong coupling of the 3p63dn4s2 to 3p53dn+14s2 excitations with the 3p63dn4s2 to 3p63dn-14s2, 3p63dn4s ionisation of the outer 3d and 4s shells leads to a resonant enhancement of the photoemission lines above the 3p threshold. For Ni the contributions of the 3p63d84s to 3p53d94s2 and 3p63d94s to 3p53d104s transitions can in part be separated.