Resonant Auger Raman effect for adsorbates

In this paper experimental results on the resonant Auger decay of adsorbates are reported. These results have been obtained under conditions where Raman effects should be observable, i.e. where the bandwidth of the primary excitation used to create a resonant core hole state is below the natural linewidth of this state given by the core hole lifetime. It is shown that under these conditions for adsorbates only a minority of decay channels shows dispersion effects characteristic for resonant Raman-type behavior in contrast to isolated systems, An explanation for this rather unexpected finding is given on the basis of fast charge transfer relaxation processes between adsorbate and substrate.