1. Key
Laboratory of Nuclear Radiation and Nuclear Energy Technology, Shanghai
Institute of Applied Physics, Chinese Academy of Sciences, 2019 Jialuo
Road, Shanghai 201800, P. R. China
2. Materials
Characterization Lab., General Electric Global Research Center-Shanghai, Zhangjiang
High-Tech. Park, Pudong New Area, Shanghai 201203, P. R. China
3. Shanghai
Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Zhangjiang High-Tech. Park, Pudong New Area, Shanghai 201204, P. R. China
4. College
of Energy, Xiamen University, Xiamen 361005, P. R. China