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Kureta, Masatoshi; Koizumi, Mitsuo; Ozu, Akira; Tsuchiya, Harufumi; Kitatani, Fumito; Furutaka, Kazuyoshi; Seya, Michio
no journal, ,
The new program "Development of active neutron NDA techniques" has started for non-proliferation applications collaborating with EC-JRC. The final purpose of this program is to establish the measurement techniques for the high radioactive special nuclear material such as MA-Pu fuel for transmutation of minor actinide. In this program, the JAEA will conduct the R&D on active neutron non-destructive measurement techniques, DDA, NRTA, PGA/NRCA and DGS. The summary of the development and differential die-away technique are presented in this report.
Maeda, Makoto; Furutaka, Kazuyoshi; Kureta, Masatoshi; Ozu, Akira; Komeda, Masao; Tobita, Hiroshi; Hattori, Kentaro
no journal, ,
Fukushima Daiichi Nuclear Accident occurred in March 2011 is considered to produce fuel debris. Down-selection of technology for material accountancy of fuel debris was conducted as a part of collaborative research between Japan Atomic Energy Agency and United States Department of Energy. JAEA has investigated applicability of three down-selected technologies to fuel debris. In this research, we report on a simulation results of the investigation on the applicability of fast neutron direct interrogation method which is one of down-selected technologies to the fuel debris.
-ray induced nuclear excitationHayakawa, Takehito
no journal, ,
We propose a new nondestructive assay method for fissionable isotopes as U-235, Pu-239, and other minor actinides in spent nuclear fuel. In our proposed system a key isotope is measured using nuclear resonance fluorescence (NRF) with a monochromatic -ray beam. Such a -ray beam is generated by Compton scattering of electrons and laser photons. One of two measurement techniques in this method is measuring the scattering -rays from a target after NRF. Another is to measure absorption of the incident -ray beam. We present our progress for this method.
Kitatani, Fumito; Kureta, Masatoshi; Koizumi, Mitsuo; Tsuchiya, Harufumi; Seya, Michio
no journal, ,
no abstracts in English
Kureta, Masatoshi
no journal, ,
The new program "Development of active neutron NDA techniques" has been started for non-proliferation applications collaborating with EC-JRC since 2015. The final purpose of this program is to establish the measurement techniques for the high radioactive special nuclear material such as MA-Pu fuel for transmutation of minor actinide. In this program, the JAEA is conducting the R&D on active neutron non-destructive measurement techniques, DDA, NRTA, PGA and DGS. The present state of the development and improved differential die-away technique are presented in this report.
Tsuchiya, Harufumi
no journal, ,
no abstracts in English
Komeda, Masao
no journal, ,
no abstracts in English
Maeda, Makoto; Komeda, Masao; Ozu, Akira; Toh, Yosuke
no journal, ,
no abstracts in English
Koizumi, Mitsuo; Seya, Michio; Tomikawa, Hirofumi; Hori, Masato; Naoi, Yosuke
no journal, ,
Japan Atomic Energy Agency (JAEA) is developing nondestructive assay (NDA) methods for nuclear nonproliferation and security under the support of Ministry of Education, Culture, Sports, Science and Technology (MEXT). The project under the subsidy of "promotion and strengthening of nuclear security and the other issues" includes projects "Demonstration experiment of nuclear resonance fluorescence NDA" for detection of heavily shielded nuclear material, and "Development of active neutron NDA techniques" for analysis of a low and high radioactive objects containing nuclear materials and the other elements with a DT neutron source. This presentation overviews these projects.