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Tsuchiya, Harufumi
no journal, ,
Neutron resonance densitometry (NRD) was developed to determine the amount of isotopes of U and Pu in particle-like fuel debris. It consists of neutron resonance transmission analysis (NRTA) and neutron resonance capture analysis (NRCA) / Prompt Gamma-ray Analysis (PGA). NRTA measures nuclear materials (NMs), while NRCA/PGA plays a role of identifying impurities such as structure materials and strong neutron absorbers that will be contained in particle-like debris. This is because NRTA would be unable to well quantify NMs when not knowing information on what impurities are present in particle-like debris. In order to investigate whether or not they are applicable to quantifications of NMs in particle-like debris, NRTA and NRCA/PGA experiments were carried out at a neutron time-of-facility GELINA. We present experimental results related to NRD developments, including a demonstration test performed at Mar, 2015.
Terada, Kazushi; Nakao, Taro; Kimura, Atsushi; Nakamura, Shoji; Mizuyama, Kazuhito; Iwamoto, Nobuyuki; Iwamoto, Osamu; Harada, Hideo
no journal, ,
Measurements of the neutron total and capture cross sections of Am-241 have been performed using a time-of-flight method with a Li-glass detector and Ge spectrometers located on the ANNRI of the MLF in the J-PARC. The neutron total cross sections of Am-241 were determined in the neutron energy region from 4 meV to 2 eV. Comparisons of the present result with previous experimental data and evaluations were made. This contribution presents the obtained results.
-ray analysis at ANNRIHuang, M.; Toh, Yosuke; Ebihara, Mitsuru*; Kimura, Atsushi; Nakamura, Shoji
no journal, ,
Kimura, Atsushi
no journal, ,
no abstracts in English