1. Department of Chemistry
2. The University of Tokyo
3. Tokyo 113-0033
4. Japan
5. Laboratory for Materials and Structures
6. Institute of Materials Structure Science
7. High Energy Accelerator Research Organization (KEK)
8. Ibaraki 305-0801
9. Tandem Accelerator Complex
10. University of Tsukuba
11. Ibaraki 305-8577