作者机构:[1]College of Science, Nanjing University of Science and Technology, Nanjing 210094, China, [2]Department of Physics, Zhejiang University, Hangzhou 310027, China, [3]Laboratory of Synchrotron Radiation, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
相关基金:Supported by National Natural Science Foundation of China (10674115), BSRF and RDF of N JUST (AB96331)