Neutron inelastic scattering measurements for Na, Mo, Zr, Ge, and U

Abstract

Studies for advanced reactor systems such as sodium-cooled fast reactors designed for recycling of high level waste, accelerator driven systems for transmutation, and systems envisioning the use of the Th/U fuel cycle impose tight requirements on nuclear data for accurate predictions of their operation and safety characteristics. Among the identied needs established by sensitivity studies, neutron inelastic scattering on the main structural materials and actinides and some (n,xn) cross sections for actinides feature prominently. Prompt-gamma spectroscopy and time-of-flight techniques were used to measure (n,xn) cross-sections of interest. Experiments were performed at the GELINA neutron time-of-flight facility of IRMM. Results and progress concerning 235;238U, are presented and discussed for 23Na, 76Ge, Zr and Mo.