Status of experimental and theoretical (n,4n) reaction cross-section data

Recently, an attempt to evaluate substantially the situation for Z = 63 to 83 nuclei by the combination of the experimental and the theoretical (n,4n) reaction cross-section values in the energy range from 26 to 30 MeV, the cross-sections dependence on the neutron excess (N-Z) and (En + Qn) (where Nand Z are target nucleus neutron and proton numbers; En and Qn are the incident neutron energy and (n,4n) reaction energy, respectively) has been investigated. This approach in this field is formulated. It is seen that the empirical formulae gives good fits with the experimental values