*Yoshitaka Matsukawa¹, Shuhei Kitayama¹, Kenta Murakami², Yasunari Shinohara³, Kenta Yoshida¹, Huilong Yang², Takeshi Toyama¹, Hiroaki Muta⁴, Shinsuke Yamanaka⁴, Hiroaki Abe² (1. Tohoku University, Institute for Materials Research, 2. The University of Tokyo, 3. NDS, 4. Osaka University)

*Ippei Ohkuma¹, Yoshitaka Matsukawa¹, Hiroaki Muta², Huilong Yang³, Takeshi Toyama¹, Shinsuke Yamanaka², Yuhki Satoh¹, Hiroaki Abe³ (1. Tohoku University, 2. Osaka University, 3. The University of Tokyo)

*Huilong Yang¹, Sho Kano¹, Zhengang Duan³, Yoshitaka Matsukawa², Kenta Murakami¹, Hiroaki Abe¹ (1. Graduate School of Engineering, The University of Tokyo, 2. Institute for Materials Research, Tohoku University, 3. Graduate School of Engineering, Tohoku University)

*Kouichi Tougou¹, Takashi Onitsuka¹, Kaoru Tone¹, Naohiro Shimomura¹, Ken-ichi Fukumoto¹, Masayoshi Uno¹, Hiroaki Muta² (1. University of Fukui, 2. Osaka University)

Hideo Watanabe¹, *Katuhito Takahashi², Yusaku Maruno³ (1. Kyushu Univ.,, 2. NFD, 3. Hitachi)

*Mitsuhiro Itakura¹, Taira Okita² (1. JAEA, 2. Univ. Tokyo)