Institution: | a Department of Materials Science, Faculty of Engineering, Tottori University, Minami 4-101, Koyamacho, Tottori 680-0945, Japan b Center for Proton Accelerator Facility, JAERI, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan c Neutron Science Research Center, JAERI, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan d Neutron Science Laboratory, Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, Japan |