Institution: | [1]International Research Center for Nuclei and Particles in the Cosmos, Beihang University, Beijing 100191; [2]School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191; [3]Department of Physics, Kyungpook National University, Daegu 702-70L Korea; [4]Department of Physics,Dong-A University, Busan 604-714, Korea; [5]Research Center, Dong-nam Institute of Radiological and Medical Sciences, Busan 619-953, Korea; [6]Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, Tokyo 152-8550, Japan |