1. Department of Physics; Tokyo Gakugei University; Tokyo Japan
2. JSG High School; Tokyo Japan
3. Japan Atomic Energy Agency; Tokyo Japan
4. School of Systems Engineering; Kochi University of Technology; Kochi Japan
5. Faculty of Science and Engineering; Waseda University; Tokyo Japan
6. Faculty of Science; Tokyo University of Science; Tokyo Japan
7. National Institute of Radiological Sciences; Chiba Japan