Affiliation: | LI GuangShun1,2,ZHOU XiaoHong1,ZHANG ShuangQuan3,ZHANG YuHu1 & MENG Jie3 1 Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China,2 Graduate University of Chinese Academy of Sciences,Beijing 100049,3 School of Physics and SK Laboratory of Nuclear Physics & Technology,Peking University,Beijing 100871 |