RESONANT PHOTOEMISSION AT THE 2P THRESHOLDS OF FE, CO, AND NI METAL

Resonant photoemission studies have been performed at the 2p soft-x-ra y absorption thresholds of Fe, Co, and Ni metal. At resonance, the pho toelectron intensity exhibits a strong enhancement in the region of th e two-hole satellites, which is shown, however, to be mostly due to an incoherent superposition of a photoemission signal with a more intens e signal from an L3M4,5M4,5 Coster-Kronig decay of the core-ionized st ate. The resonant enhancement of the valence-band photoemission satell ite in Ni metal amounts to a factor of congruent-to 12. In contrast, n o photoemission satellites are observed for Fe and Co metal.