Affiliation: | 1. Ibaraki University, 4-12-1 Nakanarusawa, Hitachi, Ibaraki 316-8511, Japan;2. J-PARC Centre, Japan Atomic Energy Agency, 2-4 Shirane Shirakata, Tokai, Ibaraki 319-1195, Japan;3. Neutron Science Division, Korea Atomic Energy Research Institute, Daejeon 305-353, South Korea |