Interaction of anionic tin clusters Snn−, n = 7 − 75 with electrons – polyanion production and cluster decay★
Institute of Physics, University of Greifswald,
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Received in final form: 11 July 2018
Published online: 11 September 2018
Size-selected monoanionic tin clusters Snn−, n = 7 − 75, are stored simultaneously with electrons in a Penning trap to produce poly-anionic clusters by electron attachment. In addition to doubly and triply charged clusters with the size of the precursors, fragments such as Sn−n−7, Sn−n−10 or Snn−15 are observed in the lower size range (n ≲ 50). The latter come along with the clusters Sn−10 and Sn−15, probably due to fission of doubly charged clusters as in the case of the group-14 neighbor-element lead [König et al., Phys. Rev. Lett. 120, 163001 (2018)]. Furthermore, prominent doubly charged products Sn2−n−15 seem to be produced by break-off of neutral decamers, a feature not yet observed for any other dianionic cluster. In addition, while almost no monomer evaporation is observed for singly charged clusters, this process does occur for doubly charged ones.
© EDP Sciences / Società Italiana di Fisica / Springer-Verlag GmbH Germany, part of Springer Nature, 2018