Charge Distributions According to the Cluster Model of Nuclear Fission

Abstract

The cluster model of nuclear fission makes definite predictions about the charge distributions. The assumptions made in the computation of mass distributions have to be supplemented by the postulate of statistical sharing of the surplus protons and neutrons between light and heavy cluster. Given the mass distributions, the charge distributions are completely determined by statistical considerations. The calculated average charge 〈ZP〉 as a function of fragment mass number Ap for thermal neutron induced fission of U235 agrees rather well with the radiochemical results and some recent mass spectroscopic measurements. The shape of the charge distribution around 〈Zp〉 depends on Ap , and is in fair agreement with the available data.