Threshold dynamics of L2,3M4,5M4,5 Auger satellites in 4d metals

The near L-2,L-3-threshold photon energy dependence of the satellite struct ures in 4d metals has been studied. In Ru and Rh there is one satellite. It exhibits the same threshold resonance behavior as the main lines identifyi ng its origin as a final-state screening effect. Two different types are ob served for Pd: one like in Ru and Rh and another one that disperses relativ e to the main line up to about 7 eV above threshold. Then its position is f ixed, and its absolute intensity shows a modulation opposite to that of the main line. We attribute this satellite to a final-state shake mechanism an d find a related feature also in Ag, which, however, has a monotonic intens ity development. [S0163-1829(99)01647-1].