1. Nuclear Engineering Research Collaboration Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
2. Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
3. Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
4. Fusion Research and Development Directorate, Japan Atomic Energy Agency, Naka, Ibaraki 311-0193, Japan
5. Oarai Research Laboratory, Chiyoda Technol Corporation, Oarai, Ibaraki 311-1313, Japan
6. Radiation Source Production Group, Chiyoda Technol Corporation, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
7. Chiyoda Technol Corporation, Bunkyou, Tokyo 113-8681, Japan
8. Sumitomo Heavy Industries, Ltd., Shinagawa, Tokyo 141-6025, Japan
9. Research Department, FUJIFILM RI Pharma Co., Ltd., Sammu, Chiba 289-1592, Japan