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Preferential site occupancy of krypton atoms on free argon-cluster surfaces

Author

  • M. Lundwall
  • A. Lindblad
  • H. Bergersen
  • T. Rander
  • G. Ohrwall
  • Maxim Tchaplyguine
  • S Svensson
  • O. Bjorneholm

Summary, in English

Argon clusters have been doped with krypton atoms in a pick-up setup and investigated by means of ultraviolet and x-ray photoelectron spectroscopy (UPS and XPS). The width of the krypton surface feature in the XPS spectra from mixed krypton/argon clusters has been studied and found to be narrower than in the case of homogeneous krypton clusters. By considering known spectral broadening mechanisms of the cluster features and the electron binding energy shift of the cluster surface feature relative to the atomic signal, we conclude that krypton ad-atoms preferentially occupy high-coordination surface sites on the argon host-cluster. (c) 2006 American Institute of Physics.

Department/s

Publishing year

2006

Language

English

Publication/Series

Journal of Chemical Physics

Volume

125

Issue

1

Document type

Journal article

Publisher

American Institute of Physics (AIP)

Topic

  • Physical Sciences
  • Natural Sciences

Status

Published

ISBN/ISSN/Other

  • ISSN: 0021-9606