The technique of pulsed field recombination is used to recombine a free ele
ctron with carbon cation clusters, ranging from C-60(+) to C-50(+) It is sh
own that after recombination the electron is left in a highly excited state
. The recombination method produces a Rydberg state (n similar to 180) in a
large carbon cluster, such as C-60, with an electronic energy spread of si
milar to 1 K. We measured a recombination efficiency of similar to 6%. (C)
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