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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    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

    Cite this

    Gontchar, I. I., Chushnyakova, M. V., Aktaev, N. E., Litnevsky, A. L., & Pavlova, E. G. (2010). Disentangling effects of potential shape in the fission rate of heated nuclei. Physical Review C - Nuclear Physics, 82(6), [064606]. https://doi.org/10.1103/PhysRevC.82.064606