S.Shimoura1,I.Tanihata2,T.Kobayashi3,K.Matsuta4, K.Katori4,K.Sugimoto4,D.L.Olson5,W.F.J.Muller5, H.H.Wieman5 Univ. of Tokyo, Tokyo1 Cyclotron Lab., Inst. of Phys.+ Chem. Res., Saitama2 High Energy Accelerator Res. Org. (KEK3 Osaka Univ., Osaka4 Lawrence Berkeley Lab, Berkeley, CA5
errorX(1989)X