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