Affiliation: | Japan Atomic Energy Research Institute, Oarai Research Establishment, Oarai-machi, Higashi-ibaraki-gun, Ibaraki-ken, Japan Japan Atomic Energy Research Institute, Tokai Research Establishment, Tokai-mura, Naka-gun, Ibaraki-ken, Japan Department of Nuclear Engineering, Tohoku University, Sendai-shi, Japan |