Mass distributions in nucleon-induced fission at intermediate energies - art. no. 014607

Temperature-dependent fission barriers and fission-fragment mass distributi ons are calculated in the framework of the multimodal random neck-rupture m odel (MM-RNRM). It is shown how the distinction between the different fissi on modes disappears at higher excitation energies, due to the melting of sh ell effects. The fission-fragment mass yield calculations are coupled to th e nuclear reaction code ALICE-91, which takes into account the competition between the other reaction channels and fission. With the combination of th e temperature-dependent MM-RNRM and ALICE-91 nucleon-induced fission is inv estigated at energies between 10 and 200 MeV for nuclei varying from Au to Am.