Fusion dynamics around the Coulomb barrier

K. Hagino, N. Rowley, T. Ohtsuki, M. Dasgupta, J. O. Newton, D. J. Hinde

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    1 Citation (Scopus)

    Abstract

    We perform exact coupled-channels calculations, taking into account properly the effects of Coulomb coupling and the finite excitation energy of collective excitations in the colliding nuclei, for three Fm formation reactions, 37Cl + 209Bi, 45Sc + 197Au, and 59Co + 181Ta. For the 37Cl + 209Bi and 45Sc + 197Au reactions, those calculations well reproduce the experimental total fission cross sections, and a part of the extra-push phenomena can be explained in terms of the Coulomb excitations to multi-phonon states. On the other hand, for the heaviest system, the deep-inelastic collisions become much more significant, and the fission cross sections are strongly overestimated. We also discuss the surprisingly large surface diffuseness parameters required to fit recent high-precision fusion data for medium-heavy systems, in connection with the fusion supression observed in massive systems.

    Original languageEnglish
    Title of host publicationTours Symposium on Nuclear Physics V; Tours 2003
    EditorsT. Wada, G. Munzenberg, M. Arnould, M. Ohta, T. Yamagata, M. Lewitowicz, H. Utsunomiya, H. Akimune
    PublisherAmerican Institute of Physics Inc.
    Pages82-91
    Number of pages10
    ISBN (Print)0735401772
    DOIs
    Publication statusPublished - 12 Apr 2004
    EventTours Symposium on Nuclear Physics V; Tours 2003 - Tours, France
    Duration: 26 Aug 200329 Aug 2003

    Publication series

    NameAIP Conference Proceedings
    Volume704
    ISSN (Print)0094-243X
    ISSN (Electronic)1551-7616

    Conference

    ConferenceTours Symposium on Nuclear Physics V; Tours 2003
    Country/TerritoryFrance
    CityTours
    Period26/08/0329/08/03

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