Influence of energy partition in fission and pre-neutron fragment distributions on post-neutron fragment yields, application for ²³⁵U(n_th,f)

The key role in the calculation of post-neutron fragment yields (independent FPY) is played by pre-neutron distributions Y(A,TKE) and prompt neutron multiplicity (calculated frame a emission model). knowledge excitation energies fully accelerated fragments crucial any model. So that influence on independent FPY two methods total energy (TXE) partition, one based modeling at scission another parameterization full acceleration fragments, reliable data 235 U(n th ,f) investigated using deterministic model with detailed treatment sequential DSE. results Y(A p ) Y(Z,A obtained both TXE partition describe reasonably well experimental data. use different partitions does not change positions most pronounced peaks dips structure, only their magnitude influenced Y(A,TKE), while influences position less structures Y(N (N =A -Z). kinetic than