Details

Autor(en) / Beteiligte

• Moretti, Giuliano

Titel

The Wagner plot and the Auger parameter as tools to separate initial- and final-state contributions in X-ray photoemission spectroscopy

Ist Teil von

• Surface science, 2013-12, Vol.618, p.3-11

Ort / Verlag

Kidlington: Elsevier B.V

Erscheinungsjahr

2013

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The application of the Wagner plot and Auger parameter concepts as tools for the identification of chemical states of atoms in molecules or solids is growing steadily in the surface science literature. In several publications, however, the chemical and physical insights provided by such conceptual tools are not fully investigated. In this contribution it is shown how easy is to use the Wagner plot to get information on the local valence charge and Madelung (molecular) potential (initial-state effects) and on the extra-atomic relaxation energy gained from the environment (final-state effects) for a core-ionized atom. To cover the gap with previous reviews on the applications of the Wagner plot and the Auger parameter concepts, a brief overview of the contributions which appeared in the literature in the last 15years is presented. •Initial and final state effects in XPS.•Theoretical computational studies and simpler approaches.•Chemical information obtained by the experimental data compacted in the format of a Wagner plot.•Use of Auger parameters and Wagner plots as tools to separate initial and final state effects.