1. Picobiology Institute, Graduate School of Life Science, University of Hyogo, RSC-UH LP Center, Hyogo 679-5148, Japan
2. Department of Chemistry, University of Tsukuba, Tsukuba 305-8571, Japan
3. Institute for Integrated Radiation and Nuclear Science, Kyoto University, Osaka 590-0494, Japan
4. Japan Synchrotron Radiation Research Institute, Hyogo 679-5198, Japan
5. Department of Physical Chemistry, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8657, Japan
6. Department of Materials Engineering, National Institute of Technology, Nagaoka College, Nagaoka 940-8532, Japan
7. Japan Atomic Energy Agency, Hyogo 679-5148, Japan