1. School of Science and TechnologyKwansei Gakuin University 2-1 Gakuen Sanda Hyogo 669-1337 Japan
2. School of Material and Chemical EngineeringZhengzhou University of Light Industry Zhengzhou 450002 P. R. China
3. Quantum Beam Science CenterJapan Atomic Energy Agency (JAEA) 1-1-1, Koto Sayo Hyogo 679-5148 Japan
4. SR CenterRitsumeikan University Kusatsu Shiga 525-8577 Japan