title: Electron-ion-coincidence spectra of K-shell excited Ne, Ar, and Kr clusters.
abstract: Electron-ion-coincidence spectra were recorded for K-shell excited krypton, argon, and neon clusters covering the size range from 1 atom to about 3000 atoms by utilizing hard x-ray undulator beamlines. Multiply charged ions Rz+(z>or=2) and singly charged ions Rn+(n>or=1) are observed as cluster fragments, and their relative abundance exhibits a characteristic dependence on the average cluster size N. It is expected from these results that the charges generated on the cluster surface are strongly localized while those in the cluster core are more delocalized. The estimated charge separation distance increases with N, and it is longer for lighter elements.
authors.affiliation: Department of Physics, Kyoto University, 606-8502 Kyoto, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Murakami
authors.forename: K
authors.initials: K
authors.lastname: Nagaya
authors.forename: Y
authors.initials: Y
authors.lastname: Ohmasa
authors.forename: H
authors.initials: H
authors.lastname: Iwayama
authors.forename: M
authors.initials: M
authors.lastname: Yao
mesh_terms: D001128:Argon / Q000737:chemistry*; D016000:Cluster Analysis; D004583:Electrons; D007477:Ions; D007726:Krypton / Q000737:chemistry*; D009356:Neon / Q000737:chemistry*; D011886:Radon / Q000737:chemistry; D013057:Spectrum Analysis; D013997:Time Factors
chemical_list: D007477:Ions; D009356:Neon; D007726:Krypton; D001128:Argon; D011886:Radon