Kinetic-energy-release distributions and barrier heights for C2+ emission from multiply charged C60 and C70 fullerenes

N. Haag, Z. Berényi, P. Reinhed, D. Fischer, M. Gudmundsson, H. A. B. Johansson, H. T. Schmidt, H. Cederquist, and H. Zettergren
Phys. Rev. A 78, 043201 – Published 31 October 2008

Abstract

We present experimental kinetic-energy-release distributions in the asymmetric fission processes C60q+C58(q1)++C2+ and C70q+C68(q1)++C2+ for highly excited mother ions in charge states q=48. We find that the distributions for C70q+ are considerably narrower and peak at lower energies than for C60q+ in the corresponding charge state when q>4. Further, semiempirical values for C2+ fission barrier heights were extracted for q=46 by means of a statistical approach and the measured intensity ratios between fission and C2 evaporation.

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  • Received 24 July 2008

DOI:https://doi.org/10.1103/PhysRevA.78.043201

©2008 American Physical Society

Authors & Affiliations

N. Haag, Z. Berényi, P. Reinhed, D. Fischer, M. Gudmundsson, H. A. B. Johansson, H. T. Schmidt, and H. Cederquist

  • Department of Physics, Stockholm University, AlbaNova University Center, S-10691 Stockholm, Sweden

H. Zettergren

  • Department of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C, Denmark

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Vol. 78, Iss. 4 — October 2008

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