Five-dimensional Langevin approach to fission of atomic nuclei

Abstract

We have generalized the four-dimensional Langevin approach used in our previous works for the description of the fission process to five dimensions by considering the neck parameter $\ensuremath{\epsilon}$ in the two-center shell model shape parametrization as an independent dynamical variable. The calculated results for the mass distribution of fission fragments are in better agreement with the available experimental data. In particular, the transition from mass-symmetric to mass-asymmetric fission via the triple-humped distribution in fission of thorium isotopes is well reproduced.

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