Excitation energy distributions and statistical dissociation of C-70(2+) prepared in collisions with F+ ions at 3 keV
Abstract
The statistical dissociation of C702+ has been studied as a function of the internal energy using collision induced dissociation under energy control (CIDEC). Doubly charged ions C702+ were prepared in F+ (3 keV) + C70 → F− + C702+ collisions. Up to seven successive evaporation of C2 have been observed in a time range of 1.7 μs. The dissociation energies of C70-2m2+ (m=1-7) were determined using a statistical cascade model to reproduce the excitation energy distribution of C702+ parent ions for each dissociation channel. Results are in good agreement with previous theoretical calculations.
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