Shielding experiments of concrete and iron for the 244 MeV and 387 MeV quasi-mono energetic neutrons using a Bonner sphere spectrometer (at RCNP, Osaka Univ.)Tetsuro Matsumoto, Akihiko Masuda, Jun Nishiyama, Hiroshi Iwase, Yosuke Iwamoto, Daiki Satoh, Masayuki Hagiwara, Hiroshi Yashima, Tatsushi Shima, Takashi Nakamura, Hideki Harano, Atsushi Tamii and Kichiji HatanakaEPJ Web Conf., 153 (2017) 08016DOI: https://doi.org/10.1051/epjconf/201715308016