1. Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
2. Institute for Integrated Radiation and Nuclear Science, Kyoto University, 2 Asashiro-Nishi, Kumatori, Sennan-gun, Osaka 590-0494, Japan
3. SAKURA internet Research Center, SAKURA Internet Inc., Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku,
Osaka 530-0011, Japan
4. Department of Materials Science and Engineering, Kyushu Institute of Technology, Tobata, Kitakyushu, Fukuoka 804-8550, Japan
5. Production Engineering and Green Technology Laboratory, Manufacturing Innovation Division, Panasonic Corporation, 2-7 Matsuba-cho, Kadoma City, Osaka 571-8502, Japan
6. Research Institute of Nuclear Engineering, University of Fukui, 1-2-4 Kanawa-cho, Tsuruga, Fukui 914-0055, Japan