Affiliation: | (1) Kobe Tokiwa Jr. College, Ohtani-cho 2-6-2, 653 Nagata, Kobe, Japan;(2) Laboratory of Nuclear Studies, Osaka University, Machikaneyama 1-1, 567 Toyonaka, Osaka, Japan;(3) Research Center for Nuclear Physics, Osaka University, Mihogaoka 10-1, 567 Ibaraki, Osaka, Japan |