1. Department
of Physics and Information Science, Faculty of Science, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8512, Japan
2. Soft
X-ray Spectroscopy Instrumentation Unit, RIKEN SPring-8 Center, Sayo-cho, Sayo, Hyogo 679-5148, Japan
3. Institute
for Sustainable Sciences and Development, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan
4. Department
of Chemistry and Applied Chemistry, Graduate School of Science and
Engineering, Saga University, Honjo-machi, Saga 840-8502, Japan