Preferential site occupancy observed in coexpanded argon-krypton clusters
2006 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 74, no 4, 043206- p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2006. Vol. 74, no 4, 043206- p.
IdentifiersURN: urn:nbn:se:uu:diva-95320DOI: 10.1103/PhysRevA.74.043206ISI: 000241723100113OAI: oai:DiVA.org:uu-95320DiVA: diva2:169490