Neutron-capture cross-sections of Cm and Cm measured with an array of large germanium detectors in the ANNRI at J-PARC/MLF

J-PARC/MLF/ANNRIに設置された大型Ge検出器を用いたCm及びCmの中性子捕獲反応断面積の測定

木村 敦   ; 藤井 俊行*; 福谷 哲*; 古高 和禎  ; 後神 進史*; 原 かおる; 原田 秀郎   ; 廣瀬 健太郎  ; 堀 順一*; 井頭 政之*; 加美山 隆*; 片渕 竜也*; 金 政浩; 木野 幸一*; 北谷 文人  ; 鬼柳 善明*; 小泉 光生 ; 水本 元治*; 中村 詔司  ; 太田 雅之; 大島 真澄; 高宮 幸一*; 藤 暢輔   

Kimura, Atsushi; Fujii, Toshiyuki*; Fukutani, Satoshi*; Furutaka, Kazuyoshi; Goko, Shinji*; Hara, Kaoru; Harada, Hideo; Hirose, Kentaro; Hori, Junichi*; Igashira, Masayuki*; Kamiyama, Takashi*; Katabuchi, Tatsuya*; Kin, Tadahiro; Kino, Koichi*; Kitatani, Fumito; Kiyanagi, Yoshiaki*; Koizumi, Mitsuo; Mizumoto, Motoharu*; Nakamura, Shoji; Ota, Masayuki; Oshima, Masumi; Takamiya, Koichi*; Toh, Yosuke

The neutron-capture cross sections of Cm and Cm were measured in the energy range of 1-300 eV with an array of large germanium detectors in the ANNRI at J-PARC/MLF. The resonances at around 7.7 and 16.8 eV of Cm and 4.3 and 15.3 eV of Cm were observed in capture reactions for the first time. The uncertainties of the obtained cross sections are 5.8% at the top of the first resonance of Cm and 6.6% at that of Cm. Resonance analyses were performed for low-energy ones using the code SAMMY. The prompt -ray spectra of Cm and Cm were also obtained. Eight and five new prompt -rays emitted were observed in the Cm(n,) and Cm(n,) reactions, respectively.