Study on energy-loss compensation correction method for fission fragments

Abstract

A new energy loss correction method, energy-loss compensation, was proposed and developed based on Monte-Carlo simulation. Differ from the traditional “extrapolation” method, this method not only takes into account the effect of the mass number of fission fragment on the energy loss, but also makes the experimental data available at large emission angle. In order to prove the reliability of energy-loss correction method, the difference of the energy loss between heavy and light FFs was firstly investigated in work. Moreover, this method was demonstrated with an example of the measurement on neutron-induced 234U fission reaction. The result of corrected initial kinetic energy distribution was obtained and compared with the data from “extrapolation” method. For light FFs peak, the results from different methods are in good agreement. For heavy FFs peak, the result from our method has a larger peak position, value and smaller FWHM compared with the results from “extrapolation” method. The deviation of their peak position is about 1.04 MeV. In future, it may contribute to the study on the energy loss correction of the fission fragment in neutron-induced fission reaction.