1. Corporate Engineering Center; Sumitomo Bakelite Co., Ltd.; 2100 Takayanagi Fujieda Shizuoka 426-0041 Japan
2. Neutron Science Laboratory; Institute for Solid State Physics; The University of Tokyo; 5-1-5 Kashiwanoha Kashiwa Chiba 277-8581 Japan
3. Department of Applied Physics; National Defense Academy of Japan; 1-10-20 Hashirimizu Yokosuka Kanagawa 239-8686 Japan