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- Title
Electrostatic model calculations of fission barriers for fullerene ions.
- Authors
Zettergren, H.; Jensen, J.; Schmidt, H.T.; Cederquist, H.
- Abstract
We present model calculations of kinetic energy releases and fission barriers in asymmetric fission of C60r+ ions, using a simple electrostatic model where the fragments are treated as conducting spheres. The kinetic energy releases are calculated using two different approaches for deducing the radii of the spheres. Both approaches give results in qualitative agreement with experimental results. The fission barriers, on the other hand, depend strongly on the model radii and the activation energies for neutral fragment emission. A comparison between the model calculations shows that the choice of the finite size of the smaller fragments become important as 9" increases and have large influences on the prediction for the C60r+ stability limit. The competition between neutral (evaporation) and charged-fragment emission (fission) are discussed within a static over-the-barrier model for electron transfer between conducting spheres.
- Subjects
ELECTROSTATICS; FORCE &; energy; NUCLEAR fission; DYNAMICS; FULLERENES; IONS; ASYMMETRY (Chemistry)
- Publication
European Physical Journal D (EPJ D), 2004, Vol 29, Issue 1, p63
- ISSN
1434-6060
- Publication type
Article
- DOI
10.1140/epjd/e2004-00006-6