Affiliation: | 1. Japan Atomic Energy Agency, 2-4 Shirakata Shirane, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan;2. High Energy Accelerator Research Organization, Oho, Tsukuba, Ibaraki 305-0801, Japan;3. Research Reactor Institute, Kyoto University, Kumatori, Osaka 590-0494, Japan;4. Cyclotron and Radioisotope Center, Tohoku University, Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan;5. Research Center for Nuclear Physics, Osaka University, Mihogaoka, Ibaraki, Osaka 567-0047, Japan |