1. Institute of Launch Dynamics, Nanjing University of Science and Technology, Nanjing, P. R. C., 210094
2. Institute of Launch Dynamics, Nanjing University of Science and Technology, Nanjing, P. R. C., 210094; Nanchang Military Academy, Nanchang, P. R. C., 330103
3. Institute of Plasma Physics, Chinese Academy of Sciences (ASIPP), Hefei, P. R. C., 230031