Abstract
Fission probabilities and mass distribution have been measured as a function of excitation energy for $^{228}\mathrm{Ra}$ excited in the $^{226}\mathrm{Ra}(t,pf)$ reaction. Triple peaked mass distributions are observed for which the symmetric component has an apparent higher threshold by over 1 MeV. Results are analyzed in a statistical model which suggests the presence of a resonance in the fission probability for the asymmetric mass component and the need for level density enhancements (possibly due to axial asymmetry at the barrier) in the analysis of the fission probability for the symmetric component.NUCLEAR REACTIONS, FISSION $^{226}\mathrm{Ra}(t,pf)$; measured fission probabilities for symmetric and asymmetric components; deduced fission barrier parameters, fission mass distributions.
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