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

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Abstract

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.

Detaljer

Författare
  • M. Lundwall
  • A. Lindblad
  • H. Bergersen
  • T. Rander
  • G. Ohrwall
  • Maxim Tchaplyguine
  • S Svensson
  • O. Bjorneholm
Enheter & grupper
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Fysik
  • Naturvetenskap
Originalspråkengelska
TidskriftJournal of Chemical Physics
Volym125
Utgivningsnummer1
StatusPublished - 2006
PublikationskategoriForskning
Peer review utfördJa