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Measurement of angular dependent neutron production from thick target bombarded with 140-MeV protons

Iwamoto, Yosuke  ; Satoh, Daiki  ; Hagiwara, Masayuki*; Iwase, Hiroshi*; Kirihara, Yoichi*; Yashima, Hiroshi*; Nakane, Yoshihiro ; Nakashima, Hiroshi; Nakamura, Takashi*; Tamii, Atsushi*; Hatanaka, Kichiji*

It is important to calculate neutron production from thick targets at forward angle near 0 degree and backward angle near 180 degree for the shielding design of proton accelerator facilities, and the accuracy should be determined by experimental data. There are, however, few experimental data near 0 degree, and no data near 180 degree in the energy region above 100 MeV. Neutron energy spectra at 0, 90 and 180 degrees produced from thick graphite and iron targets by 140 MeV protons were measured. It was found that the calculation with JENDL-HE was more suitable for the shielding design of proton accelerator facilities in the forward direction.

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Category:Nuclear Science & Technology

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