Department of Physics, Beihang University, Beihang University (BUAA) - Department of Physics, Nuclear Materials Science Institute, Belgium Nuclear Research Center, Belgium Nuclear Research Center, Belgium Nuclear Research Center, Huazhong University of Science and Technology - Department of Nuclear Engineering and Technology, Beihang University (BUAA) - Department of Physics, University of Michigan at Ann Arbor - Department of Nuclear Engineering and Radiological Sciences and Beihang University (BUAA) - Department of Physics