Disentangling effects of potential shape in the fission rate of heated nuclei

I. I. Gontchar, Maria Vladimirovna Chushnyakova, N. E. Aktaev, A. L. Litnevsky, E. G. Pavlova

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    30 Citations (Scopus)


    We have compared the results of dynamical modeling of the fission process with predictions of the Kramers formulas. For the case of large dissipation, there are two of them: the integral rate RI and its approximation RO. As the ratio of the fission barrier height Bf to the temperature T reaches 4, any analytical rate is expected to agree with the dynamical quasistationary rate RD within 2%. The latter has been obtained using numerical modeling with six different potentials. It has been found that the difference between RO and RD sometimes exceeds 20%. The features of the potentials used that are responsible for this disagreement are identified and studied. It is demonstrated that it is R I, not RO, that meets this expectation regardless of the potential used.

    Original languageEnglish
    Article number064606
    JournalPhysical Review C - Nuclear Physics
    Issue number6
    Publication statusPublished - 21 Dec 2010

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

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