Affiliation: | aInstitute of Applied Beam Science, Graduate School of Science and Engineering, Ibaraki University, 4-12-1 Nakanarusawa-machi, Hitachi, Ibaraki 326-8511, Japan bGraduate Student of Ibaraki University, 4-12-1 Nakanarusawa-machi, Hitachi, Ibaraki 326-8511, Japan cSumitomo Metal Industries Ltd., 1-8 Fuso-cho, Amagasaki 660-0891, Japan dJapan Atomic Energy Research Institute, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan |