Du är här

Preferential site occupancy observed in coexpanded argon-krypton clusters

Författare:
  • M. Lundwall
  • H. Bergersen
  • A. Lindblad
  • G. Ohrwall
  • Maxim Tchaplyguine
  • S. Svensson
  • O. Bjorneholm
Publiceringsår: 2006
Språk: Engelska
Publikation/Tidskrift/Serie: Physical Review A
Volym: 74
Nummer: 4
Dokumenttyp: Artikel
Förlag: American Physical Society

Sammanfattning

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.

Disputation

Nyckelord

  • Physics and Astronomy

Övrigt

Published
Yes
  • ISSN: 1050-2947

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen

LERU logo U21 logo