Highly charged clusters of fullerenes: charge mobility and appearance sizes.
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.
Manil
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Centre Interdisciplinaire de Recherche Ions Lasers (CIRIL)--CEA-CNRS-ENSICaen, rue Claude Bloch, BP 5133, F-14070 Caen Cedex 05, France.
Maunoury
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Huber
B A
BA
Jensen
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J
Schmidt
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Zettergren
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Cederquist
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H
Tomita
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Hvelplund
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