Model calculation of neutron kerma coefficient for n+56Fe below 20Â MeV

Model calculations for the n+56Fe reaction have been performed by using extended UNF code, which is based on the unified Hauser-Feshbach and exciton model. Based on the excellent agreement with the experimental double-differential cross-sections of neutron, alpha and proton, the total kerma coefficients are derived naturally with the formula KΦ=∑iKΦi=N∑ijkE¯ijk(En)σijk(En) (Sun et al., 2008), which contains more comprehensive parameter information. The discrepancies of total kerma coefficients between the experimental data, evaluated data and the calculated results of this paper have been further analyzed, and one can have some confidence in predicting the kerma coefficients derived naturally by this model calculation.