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The valence band of free K clusters studied by photoelectron and Auger spectroscopies

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Author

Summary, in English

The valence states of free neutral potassium clusters produced by a gas aggregation source were probed by synchrotron radiation based photoelectron spectroscopy. The first ionization energy (IE) of the clusters was determined to be 10% larger than the work function of bulk potassium. Using electrostatic concepts and the IE, the mean size of the clusters was estimated to be approximate to 2000 atoms. Further information about the valence band was provided by investigation of the Auger process initiated by the ionization of the 3p level with a subsequent emission of an Auger electron from the valence band (M-2,M-3 VV). Plasmon satellites were observed in Auger spectra of free metal clusters.

Publishing year

2008

Language

English

Pages

165-169

Publication/Series

European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics

Volume

50

Issue

2

Document type

Journal article

Publisher

EDP Sciences

Topic

  • Atom and Molecular Physics and Optics
  • Natural Sciences
  • Physical Sciences

Keywords

  • 73.22.-f Electronic structure of nanoscale materia
  • 36.40.-c Atomic and molecular clusters
  • 79.60.-i Photoemission and photoelectron spectra

Status

Published

ISBN/ISSN/Other

  • ISSN: 1434-6060