Fission Decay Widths for Heavy-Ion Fusion-Fission Reactions

Abstract

Cross-section and neutron-emission data from heavy-ion fusion-fission reactions are consistent with a Kramers-modified statistical model which takes into account the collective motion of the system about the ground state; the temperature dependence of the location of fission transition points; and the orientation degree of freedom. We see no evidence to suggest that the nuclear viscosity departs from the surface-plus-window dissipation model. The strong increase in the nuclear viscosity above a temperature of ~1 MeV deduced by others is an artifact generated by an inadequate fission model.

14 pg, 6 fig, submitted to Physical Review

References in corpus (1)

• First experiment on fission transients in highly fissile spherical nuclei produced by fragmentation of radioactive beams

Cited by in corpus (4)

• Energy and pairing dependence of dissipation in real-time fission dynamics
• Temperature dependence of nuclear fission time in heavy-ion fusion-fission reactions
• About the inconsistency between Bohr-Wheelers transition-state method and Kramers' escape rate in nuclear fission
• Investigating the fission dynamics of the following neutron shell closed nuclei within a stochastic dynamical approach: 210Po, 212Rn, and 213Fr