title: Transmission of 3 keV Ne7+ ions through nanocapillaries etched in polymer foils: evidence for capillary guiding.
abstract: We report unprecedented transmission experiments of 3 keV Ne7+ ions through capillaries of 100 nm diameter and 10 microm length produced by etching ion tracks in a polymer foil. We studied foils tilted up to +/-20 degrees for which the incident ions are forced to interact with the capillary surface. Surprisingly, the majority of Ne7+ ions were found to survive the surface scattering events in their initial charge state. The angular distributions of the transmitted particles indicate propagation of the Ne7+ ions along the capillary axis. This capillary guiding of the Ne7+ ion provides evidence that the inner walls of the capillaries become charged and electron capture from the surface is suppressed in a self-organizing process.
authors.affiliation: Hahn-Meitner-Institut Berlin GmbH, D-14109 Berlin, Germany.
authors.forename: N
authors.initials: N
authors.lastname: Stolterfoht
authors.forename: J-H
authors.initials: JH
authors.lastname: Bremer
authors.forename: V
authors.initials: V
authors.lastname: Hoffmann
authors.forename: R
authors.initials: R
authors.lastname: Hellhammer
authors.forename: D
authors.initials: D
authors.lastname: Fink
authors.forename: A
authors.initials: A
authors.lastname: Petrov
authors.forename: B
authors.initials: B
authors.lastname: Sulik