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

  • M. Lundwall
  • A. Lindblad
  • H. Bergersen
  • T. Rander
  • G. Ohrwall
  • Maxim Tchaplyguine
  • S Svensson
  • O. Bjorneholm
Publiceringsår: 2006
Språk: Engelska
Publikation/Tidskrift/Serie: Journal of Chemical Physics
Volym: 125
Nummer: 1
Dokumenttyp: Artikel
Förlag: American Institute of Physics


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.



  • Physical Sciences
  • Natural Sciences


  • ISSN: 0021-9606

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