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Critical analysis of dissipative effects in fission

By According To Grangé and Dissipation Effects


in the fission process of a hot heavy-nucleus lead to a timedependent fission-decay width Γf (t) that is first suppressed, then increases gradually and finally reaches a stationary value Γstat. see full line in figure 1. Figure 1: Γf(t) obtained from the solution of the Fokker-Planck eq. [2] (full line) in comparison with two approximations. The dashed-dotted line corresponds to the approximation (a) and the dashed line to the approximation (b) However, the implementation of this function in a nuclearreaction code is rather complicated, and thus most codes use one of the following approximations: (a) an exponential ingrow function of the form Γf ( t

Year: 2011
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