1. Department of Engineering and Applied Physics and CAS Key Laboratory of Geospace Environment, University of Science and Technology of China, Hefei, Anhui 230026, China
2. International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
3. Department of Engineering Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
4. Collaborative Innovation Center of IFSA (CICIFSA), Shanghai Jiao Tong University, Shanghai 200240, China