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

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

来源：Journal of Nuclear Science and Technology, 2012, 49(7): 708-724.

DOI：10.1080/00223131.2012.693887

• Cm-244
• Cm-246
• 1-300 eV
• neutron-capture cross-section
• J-PARC
• MLF
• ANNRI
• minor actinide
• neutron time-of-flight method

The neutron neutron-capture cross cross-sections of Cm-244 and Cm-246 were measured by the time-of-flight 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 Cm-244 resonances at around 7.7 and 16.8 8 eV and the Cm-246 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 cross-sections are 5.8% at the top of the first resonance of Cm-244 and 6.6% at that of Cm-246. The rResonance analyses were performed for low-energy ones using the code SAMMY. The prompt g-ray spectra of Cm-244 and Cm-246 were also obtained. Eight and five new prompt g-ray emissions were observed in the Cm-244(n, gamma) and Cm-246(n, gamma) reactions, respectively.

• 出版日期2012-7