1. Key Laboratory of Materials Modification by Beams of the Ministry of Education, School of Physics, Dalian University of Technology, Dalian 116024, People's Republic of China
2. Southwestern Institute of Physics, Chengdu 610041, People's Republic of China
3. Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027, People's Republic of China
4. School of Physics Science and Technology, Southwest Jiaotong University, Chengdu 611731, People's Republic of China