Abstract

Significant progresses in the field of swift cluster–atom collisions have been made, thanks to the development of new beam facilities. We report on experiments performed nearby the Tandem accelerator at Orsay (France) with beams of small carbon clusters C+n(n⩽5) of 2 MeV/C colliding with a single helium atom. New results concerning the ionization cross sections of the clusters are reported and compared to the predictions of the independent atom and electron model. New results concerning the fragmentation patterns of C+5 (branching ratios and dissociative energies) are presented. A strong observed multifragmentation is observed, and discussed.

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