Fissility of actinide nuclei by 60-130 MeV photons

Abstract

Nuclear fissilities obtained from recent photofission reaction cross section measurements carried out at Saskatchewan Accelerator Laboratory (Saskatoon, Canada) in the energy range 60-130 MeV for 232 Th, 233 U, 235 U, 238 U, and 237 Np nuclei have been analysed in a systematic way. To this aim, a semiempirical approach has been developed based on the quasi-deuteron nuclear photoabsorption model followed by the process of competition between neutron evaporation and fission for the excited nucleus. The study reproduces satisfactorily well the increasing trend of nuclear fissility with parameter Z 2 /A.

Monte Carlo Simulation of Heavy Nuclei Photofission at Intermediate Energies

“…Fission is one of the most studied reactions [1][2][3][4][5][6]. It involves all the nucleons inside the nucleus, and many different processes take place before the excited nucleus fissionate.…”