title: Highly charged clusters of fullerenes: charge mobility and appearance sizes.
abstract: Clusters of fullerenes (C60,C70)(n) are produced in a gas aggregation source and are multiply ionized in collisions with highly charged Xe(20+,30+) ions. Their stabilities and decay processes are analyzed with high-resolution time-of-flight mass spectrometry. Fullerene clusters in charge states up to q=5 have been observed and appearance sizes are found to be as small as n(app)=5, 10, 21, and 33 for q=2, 3, 4, and 5, respectively. The analysis of the multicoincident fragmentation spectra indicates a high charge mobility. This is in contrast to charge localization effects which have been reported for Ar(q+)(n) rare gas clusters. Clusters of fullerenes are found to be conducting when multiply charged.
authors.affiliation: Centre Interdisciplinaire de Recherche Ions Lasers (CIRIL)--CEA-CNRS-ENSICaen, rue Claude Bloch, BP 5133, F-14070 Caen Cedex 05, France.
authors.forename: B
authors.initials: B
authors.lastname: Manil
authors.forename: L
authors.initials: L
authors.lastname: Maunoury
authors.forename: B A
authors.initials: BA
authors.lastname: Huber
authors.forename: J
authors.initials: J
authors.lastname: Jensen
authors.forename: H T
authors.initials: HT
authors.lastname: Schmidt
authors.forename: H
authors.initials: H
authors.lastname: Zettergren
authors.forename: H
authors.initials: H
authors.lastname: Cederquist
authors.forename: S
authors.initials: S
authors.lastname: Tomita
authors.forename: P
authors.initials: P
authors.lastname: Hvelplund