DEVELOPMENT OF NEUTRON DATA EVALUATION METHODS AND CREATING COMPLETE FILES OF ZIRCONIUM ISOTOPES


V. Bychkova, O. Grudzevich, A. Zelenetski, V. Plyaskin

IATE, Obninsk, USSR

The evaluation of neutron cross-sections for Zirconium Isotopes is performed for the Soviet library of evaluated neutron data. The total, elastic, inelastic, radiative capture, (n,p), (n,α), (n,2n) and (n,n'p) reaction cross-sections and emission spectra are evaluated in the energy range from 10-5 ev to 20 MeV and given in the ENDF/B format. An evaluation in the resonance region is based on the experimental data. Theoretical model calculations are used for evaluation of excitation functions and particle emission spectra in a smooth cross sections region. Systematics of theoretical model parameters were used for decreasing the uncertainties of the evaluated data.