Small-angle neutron scattering diffractometer SANS-J for nuclear separation chemistry
分離化学研究のための中性子小角散乱装置SANS-J
元川 竜平
; 上田 祐生
; Micheau, C.; Bourgeois, D.*; Dourdain, S.*; Diat, O.*
Motokawa, Ryuhei; Ueda, Yuki; Micheau, C.; Bourgeois, D.*; Dourdain, S.*; Diat, O.*
Neutron scattering is a useful complement to X-ray scattering each other in the study of material structures, mainly because the neutron cross-section varies randomly among elements, whereas the X-ray atomic scattering factor increases with atomic number. The large difference in the scattering cross-section between hydrogen and deuterium is crucial in the use of neutron scattering to analyze the microscopic structure of various materials, so that the difference enables us to observe only the structures formed by one specific component among scatterers composed of other multiple components. Recently, we have developed small-angle neutron scattering diffractometer (SANS-J), at JRR-3 of the Japan Atomic Energy Agency, Japan, and the various kinds of studies in chemical separation systems, such as biphasic solvent extraction, flotation process, and solids-liquid separation using adsorbent materials, which are well related to the nuclear process, have been conducted in the place. Here we will present our small-angle scattering diffractometer, SANS-J, which is a typical apparatus installed at the research reactor for neutron scattering, as well as some representative results obtained. We discuss the collaborative research with French institutions not limited to solvent extraction systems.