Neutron-capture cross-sections of 244Cm and 246Cm measured with an array of large germanium detectors in the ANNRI at J-PARC/MLF

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

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Abstract

The neutron neutron-capture cross cross-sections of 244Cm and 246Cm were measured by the time-offlight method in the energy range of 1-300 300 eV with an array of large germanium detectors in the Accurate Neutron-Nucleus Reaction measurement InstrumentANNRI at Material and Life Science Experimental Facility (MLF) of the Japan Proton Accelerator Research ComplexJ-PARC/MLF. The 244Cm resonances at around 7.7 and 16.8 8 eV and the 246Cm resonances at around 4.3 and 15.3 3 eV were observed in the capture reactions for the first time. The uncertainties of the obtained cross crosssections are 5.8% at the top of the first resonance of 244Cm and 6.6% at that of 246Cm. The rResonance analyses were performed for low-energy ones using the code SAMMY. The prompt y-ray spectra of 244Cm and 246Cm were also obtained. Eight and five new prompt y-ray emissions were observed in the 244Cm(n, y) and 246Cm(n, y) reactions, respectively.

Original languageEnglish
Pages (from-to)708-724
Number of pages17
Journaljournal of nuclear science and technology
Volume49
Issue number7
DOIs
Publication statusPublished - 2012

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering

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    Kimura, A., Fujii, T., Fukutani, S., Furutaka, K., Goko, S., Hara, K. Y., Harada, H., Hirose, K., Hori, J. I., Igashira, M., Kamiyama, T., Katabuchi, T., Kin, T., Kino, K., Kitatani, F., Kiyanagi, Y., Koizumi, M., Mizumoto, M., Nakamura, S., ... Toh, Y. (2012). Neutron-capture cross-sections of 244Cm and 246Cm measured with an array of large germanium detectors in the ANNRI at J-PARC/MLF. journal of nuclear science and technology, 49(7), 708-724. https://doi.org/10.1080/00223131.2012.693887