Neutron data for U-Th fuel cycle

Consistent evaluation of 238U, 234U, 233U, 232U and 232Th measured data base is performed from a few keV to 20 MeV. Hauser-Feshbach-Moldauer theory, coupled channel model and double-humped fission barrier model are employed. Total, differential scattering, fission and (n,xn) data are consistently reproduced as a major constraint for inelastic scattering cross section estimate. The direct excitation of ground state and higher band levels is calculated within rigid rotator and soft (deformable) rotator model, respectively. Structures evident in 238U and 232Th measured neutron emission spectra are correlated with excitation of levels of Kπ = 0- and Kπ = 0+,2+ bands. Available prompt fission neutron spectra data are described. Average resonance parameters are provided, which reproduce evaluated cross sections for neutron energies up to ∼150 keV (∼40 keV in case of 233U). (author)