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Preferential site occupancy observed in coexpanded argon-krypton clusters

In English

Författare

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

Summary, in English

Free heterogeneous argon-krypton clusters have been produced by coexpansion and investigated by means of x-ray photoelectron spectroscopy. By examining cluster surface and bulk binding energy shifts, relative intensities, and peak widths, we show that in the mixed argon-krypton clusters the krypton atoms favor the bulk and argon atoms are pushed to the surface. Furthermore, we show that krypton atoms in the surface layer occupy high-coordination sites and that heterogeneous argon-krypton clusters produced by coexpansion show the same surface structure as argon host clusters doped with krypton. These observations are supported by site-dependent calculations of chemical shifts.

Publiceringsår

2006

Språk

Engelska

Publikation/Tidskrift/Serie

Physical Review A (Atomic, Molecular and Optical Physics)

Volym

74

Issue

4

Dokumenttyp

Artikel i tidskrift

Förlag

American Physical Society

Ämne

  • Natural Sciences
  • Physical Sciences

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1050-2947