1. Graduate Degree Program of Science and Technology of Accelerator Light Source, National Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu 30010, Taiwan
2. Department of Materials Science and Engineering, National Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu 30010, Taiwan
3. Department of Physics, National Taiwan Normal University, 88 Ting Chou Road, Taipei 11677, Taiwan
4. National Synchrotron Radiation Research Center, 101 Hsin Ann Road, Hsinchu 30076, Taiwan
5. Physics Division, Institute of Nuclear Energy Research, 1000 Wen Hua Road, Taoyuan 32546, Taiwan