作者机构:[1]National Synchrotron Radiation Laboratory, School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230029, China
相关基金:Supported by the Natural Science Foundation of China (10875117) and the National "985 Project" (173123200402002)Acknowledgment The authors would like to thank Dr. LI Zenghai and Advanced Computational Department of SLAC National Accelerator Laboratory for helps in this research.