The 3s photoemission spectra of 3d-transition-metal atoms adsorbed on graph
ite are calculated with a cluster model. In addition to exchange splitting,
the spectra show charge transfer satellites from final state core hole scr
eening by the graphite pi-band. For the late 3d elements, exchange and char
ge transfer satellites are strongly mixed, which leads essentially to a thr
ee peak structure of the spectra. (C) 1999 Elsevier Science B.V. All rights
reserved.