Abstract:
Independent yields of 82Br, 132I, 136Cs, 140La and the cumulative yields of 95Zr, 97Zr, 99Mo, 131I, 134I, 135I, 138Cs, 142La in the fission of 238U induced by neutrons of 14.7 MeV were determined by radiochemical methods. The correlation of independent yields with a Gaussian curve of charge distribution was investigated using various mass formulae, neutron emission functions and charge distribution hypotheses. The results seem to indicate that both the hypothesis of minimum potential energy with a non-shell-effected mass equation and the hypothesis of equal charge displacement with a shell-effected equation gave almost equal best fits to the data. The Gaussian curve of the charge distribution and AZ, the deviation of the experimental value of the most probable charge from the constant charge density obtained in our experiments were found to be in agreement with those in the fission of 235U induced by thermal neutrons.