Formation of fullerene dianions in a Penning trap |
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Authors: | A. Lassesson N. Walsh F. Martinez A. Herlert G. Marx L. Schweikhard |
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Affiliation: | (1) Institut für Physik, Ernst-Moritz-Arndt-Universität Greifswald, Domstr. 10a, 17487 Greifswald, Germany |
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Abstract: | Fullerene dianions in the range C702- to C902- have been created by subjecting trapped fullerene monoanions to low energy electrons in a Penning trap. The dianion production was found to be a function of the trapping-potential depth and the time of interaction between the simultaneouslystored monoanionsand electrons. Under similar conditions the dianion yield depends on the size ofthefullerenes with more than 10% of the trapped C90- ions forming dianions while the corresponding relative yield for C702- was less than 0.1%. The large difference can be explained by the repulsive Coulomb barrierand the second electron affinity of the fullerenes. |
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