Road to J-PARC from JRR2 (50 years' history for neutron scattering research activity in Japan)(One Hundred Years of X-ray and Particle Diffraction)

Abstract

Neutron diffraction researches in Japan started more than 30 years after the discovery of neutrons in 1932, when intense thermal neutrons were delivered in Japan from JRR2 of the research reactor. Today, the most intense pulsed neutrons in the world can be supplied at J-PARC facility in Tokai and various neutron scattering research have been developed. This article covers the road of the research activities from JRR2 to J-PARC for about a half century, which may contain a guide for future developments in Japanese neutron scattering activities.