H.Hamagaki1,X.X.Bai2,O.Hashimoto1,S.Kadota1,K.Kimura3, Y.Miake4,S.Nagamiya4,K.Omata1,Y.Shida1,I.Tanihata1, N.Yoshikawa1 Institute for Nuclear Study, Univ. of Tokyo, Tanashi1 Lawrence Berkeley Lab, Berkeley, CA1 Inst.of Atomic Energy, Beijing2 Kyushu Univ., Fukuoka3 Univ. of Tokyo, Tokyo4
Physics Letters,Section B150(1985)416