Preferential site occupancy of krypton atoms on free argon-cluster surfaces
2006 (English)In: Journal of Chemical Physics, ISSN 0021-9606, E-ISSN 1089-7690, Vol. 125, no 1, 014305Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2006. Vol. 125, no 1, 014305
IdentifiersURN: urn:nbn:se:uu:diva-96753DOI: 10.1063/1.2209677ISI: 000238849500017PubMedID: 16863296OAI: oai:DiVA.org:uu-96753DiVA: diva2:171432