title: Femtosecond interatomic Coulombic decay in free neon clusters: large lifetime differences between surface and bulk.
abstract: A quantitative determination of 2s vacancy lifetimes in surface and bulk atoms of free Ne clusters has been made. While for free atoms the 2s inner-valence hole has a ps lifetime, it reduces to 6+/-1 fs for cluster bulk atoms. For surface atoms, the lifetime is on average longer than 30 fs. The lifetime estimate was obtained from fits of high-resolution photoelectron spectra of Ne clusters. The shortening of the lifetime is attributed to the coordination dependent interatomic Coulombic decay, which is extremely sensitive to internuclear distances.
authors.affiliation: Department of Physics, Uppsala University, Box 530, S-751 21 Uppsala, Sweden. gunnar.ohrwall@fysik.uu.se
authors.forename: G
authors.initials: G
authors.lastname: Ohrwall
authors.forename: M
authors.initials: M
authors.lastname: Tchaplyguine
authors.forename: M
authors.initials: M
authors.lastname: Lundwall
authors.forename: R
authors.initials: R
authors.lastname: Feifel
authors.forename: H
authors.initials: H
authors.lastname: Bergersen
authors.forename: T
authors.initials: T
authors.lastname: Rander
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authors.initials: A
authors.lastname: Lindblad
authors.forename: J
authors.initials: J
authors.lastname: Schulz
authors.forename: S
authors.initials: S
authors.lastname: Peredkov
authors.forename: S
authors.initials: S
authors.lastname: Barth
authors.forename: S
authors.initials: S
authors.lastname: Marburger
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