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Report No.

Measurements of neutron capture cross sections using a 4$$pi$$Ge spectrometer at the J-PARC/MLF/NNRI

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

The measurements of neutron capture cross sections have been started using a 4$$pi$$Ge spectrometer at the neutron nucleus reaction instrument (NNRI) in the J-PARC materials and life science facility (MLF). First set of test measurements using the spectrometer at the J-PARC/MLF/NNRI have been performed for radioactive samples such as Cm-244, etc. The initial test experiments have demonstrated the capability of measuring the neutron capture cross section of Cm-244 with a sample mass of less than 1mg. In this talk, we will report preliminary results of the initial experiments, and discuss the new capability and future perspectives. * Present study is the result of "Study on nuclear data by using a high intensity pulsed neutron source for advanced nuclear system" entrusted to Hokkaido University by the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT).



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