Resonant Pd $L_3-M_{4,5}M_{4,5}$ and $L_3-N_{4,5}N_{4,5}$ Auger transitions

The evolution of the Pd Auger electron emission resulting in an open 3d and 4d shell, respectively, was experimentally studied as a function of photon energy across the L3 threshold. Both for the core-core-core (L3−M4,5M4,5) and the core-valence-valence (L3−N4,5N4,5) processes the observed resonance behavior is interpreted in terms of radiationless resonant Raman scattering. In the threshold regime the Auger electron emission traces the photon energy and the linewidth exhibits a sublifetime narrowing. Around the L3 threshold the L3−N4,5N4,5 emission partly overlaps with the valence-band satellite. The accurate intensity normalized constant initial state data reveal a Fano-type modulation for the main valence band. However, no such behavior is obtained for the satellite region if the resonant threshold process in the L3−N4,5N4,5 Auger channel is taken properly into account