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Collisions of rare gas ions with C60: Endohedral formation, energy transfer, and scattering dynamics

Summary: Collisions of rare gas ions with C60: Endohedral formation, energy transfer,
and scattering dynamics
Yousef Basir and Scott L. Anderson
Department of Chemistry, University of Utah, Salt Lake City, Utah 84112
Received 7 July 1997; accepted 21 August 1997
Scattering of rare gas cations from C60 has been studied in a guided-beam tandem mass
spectrometer. Charge transfer CT is observed to be the dominant channel over the collision energy
range from 0 to 100 eV, but dissociative CT and endohedral complex formation are significant at
high collision energies. The threshold energies for endohedral penetration are found to be
proportional to rare gas atom size. Our CT and dissociative CT data allow us to make several
conclusions about the nature of energy transfer in rare gas-fullerene collisions. Surprisingly, the
conclusion is that the energy transfer distribution must be sharply bimodal, with 85% of collisions
resulting in little collision-to-internal energy transfer, and 15% of collisions being essentially
100% inelastic. The results indicate that the dissociative CT and endocomplex formation channels
are closely related. 1997 American Institute of Physics. S0021-9606 97 02744-X
Since the discovery by Huffman et al.1,2
of a simple
method to produce large quantities of fullerenes, many as-
pects of these molecules have examined with a variety of


Source: Anderson, Scott L. - Department of Chemistry, University of Utah


Collections: Energy Storage, Conversion and Utilization; Materials Science; Chemistry