Abstract
Positive and negative fullerene ions have been stored in a heavy-ion storage ring. We found confinement times (storage lifetimes) of the order of 2 to 10 s, the limit being set by collisional destruction in the background gas. The data also show a short decay time of the order of some milliseconds. This component was considerably longer for the negative C 60 and C 70 ions than the neighboring negative C 58 and C 68 ions. We discuss the possible processes that may account for the observation of the ms-decay times. The present technique may provide an excellent way to produce and study cold clusters
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