1. Institute of Nuclear Physics and Chemistry
2. China Academy of Engineering Physics
3. Mianyang 621900
4. P. R. China
5. State Key Laboratory of Advanced Electromagnetic Engineering and Technology
6. School of Electrical and Electronic Engineering
7. Huazhong University of Science and Technology
8. Wuhan 430074
9. China
10. Beijing National Laboratory for Molecular Sciences (BNLMS)
11. Department of Applied Chemistry
12. College of Chemistry and Molecular Engineering
13. Peking University
14. Beijing 100871