title: Postcollision interaction in noble gas clusters: observation of differences in surface and bulk line shapes.
abstract: The surface and bulk components of the x-ray photoelectron spectra of free noble gas clusters are shown to display differences in the influence of postcollision interaction between the photoelectron and the Auger electron on the spectral line shape; the bulk component is observed to be less affected than the surface and atomic parts of the spectra. A model for postcollision interaction in nonmetallic solids and clusters is also provided which takes the polarization screening into account. Core-level photoelectron spectra of Ar, Kr, and Xe have been recorded to verify the dependence of the postcollision interaction effect on the polarizability of the sample.
authors.affiliation: Department of Physics, Uppsala University, Box 530, SE-751 21 Uppsala, Sweden. andreas.lindblad@fysik.uu.se
authors.forename: A
authors.initials: A
authors.lastname: Lindblad
authors.forename: R F
authors.initials: RF
authors.lastname: Fink
authors.forename: H
authors.initials: H
authors.lastname: Bergersen
authors.forename: M
authors.initials: M
authors.lastname: Lundwall
authors.forename: T
authors.initials: T
authors.lastname: Rander
authors.forename: R
authors.initials: R
authors.lastname: Feifel
authors.forename: G
authors.initials: G
authors.lastname: Ohrwall
authors.forename: M
authors.initials: M
authors.lastname: Tchaplyguine
authors.forename: U
authors.initials: U
authors.lastname: Hergenhahn
authors.forename: S
authors.initials: S
authors.lastname: Svensson
authors.forename: O
authors.initials: O
authors.lastname: Björneholm
mesh_terms: D001128:Argon; D004583:Electrons; D007726:Krypton; D005741:Noble Gases / Q000737:chemistry*; D013057:Spectrum Analysis; D014965:X-Rays; D014978:Xenon
chemical_list: D005741:Noble Gases; D014978:Xenon; D007726:Krypton; D001128:Argon