Measurement of W-183(n, n'gamma) and (n, 2n gamma) cross-sections (preliminary)

The necessary improvement of evaluated nuclear databases for appplication will be achieved with improvement of models and new, precise data. In particular, the effect of inelastic neutrons scattering can be of importance for reactors. In order to test the models, we performed measurement of (n, n'gamma) and (n, 2n gamma) cross-sections on W-183. These data will help constrain the calculation codes and ensure a better evaluation of the total (n, xn) cross section. The experimental setup and the data analysis method will be presented. The preliminary experimental results for the W-183 isotope will be compared to predictions from Talys nuclear reaction code.