School of Nuclear Science and Technology Lanzhou University Lanzhou 730000 China;
Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 China;
School of Nuclear Science and Technology University of Chinese Academy of Sciences Beijing 100080 China;
Key Laboratory of Radiation Physics and Technology of the Ministry of Education Institute of Nuclear Science and Technology Sichuan University Chengdu 610064 China;
School of Science Huzhou University Huzhou 313000 China;
School of Physics and Nuclear Energy Engineering Beihang University Beijing 100191 China;
Instituto de Física Universidade de S(a)n Paulo Rua do Mat(a)o 1371 S(a)n Paulo 05508-090 SP Brazil;
