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J-PARC/ANNRI-NaI(Tl)検出器を用いたAm-241の中性子捕獲断面積の測定

Measurement of neutron capture cross section of Am-241 using ANNRI-NaI(Tl) spectrometer at J-PARC

片渕 竜也*; 井頭 政之*; 寺田 和司; 木村 敦   ; 中村 詔司  ; 中尾 太郎; 岩本 修  ; 岩本 信之  ; 原田 秀郎   ; 堀 順一*

Katabuchi, Tatsuya*; Igashira, Masayuki*; Terada, Kazushi; Kimura, Atsushi; Nakamura, Shoji; Nakao, Taro; Iwamoto, Osamu; Iwamoto, Nobuyuki; Harada, Hideo; Hori, Junichi*

J-PARC/MLF/ANNRIにおいてNaI(Tl)検出器を用いて飛行時間法により$$^{241}$$Amの中性子捕獲断面積の測定を行った。熱領域から共鳴領域の断面積を導出し、過去の実験値、評価値と比較した。結果について報告する。

Measurements of the neutron capture cross sections of $$^{241}$$Am have been performed using a time-of-flight method with an NaI(Tl) spectrometer located on the ANNRI of the MLF in the J-PARC. The capture cross sections of $$^{241}$$Am were derived in neutron energies ranging from the thermal to resonance region. Comparisons of the present result with previous experimental data and evaluations were made. This contribution presents the obtained results.

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