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Utilizing PUNITA experiments to evaluate fundamental delayed gamma-ray spectroscopy interrogation requirements for nuclear safeguards

Autor: J. Takamine, Tohn Takahashi, Douglas Chase Rodriguez, Fabiana Rossi, Mitsuo Koizumi, Tatjana Bogucarska, Michio Seya, Bent Pedersen, Jean-Michel Crochemore

Publikováno v: Journal of Nuclear Science and Technology. 57:975-988

Present safeguards verification methods for small samples of high-radioactivity nuclear material (e.g. spent nuclear fuel solution) in reprocessing facilities use destructive analysis techniques si...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6a816040f048fcaf2b60d09e995848a1
https://doi.org/10.1080/00223131.2020.1742812

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Demonstration of gamma-ray pipe-monitoring capabilities for real-time process monitoring safeguards applications in reprocessing facilities

Autor: Yasunobu Mukai, Fabiana Rossi, Douglas Chase Rodriguez, Michio Seya, Kazuaki Nishimura, J. Takamine, Megumi Sekine, Hirofumi Tomikawa, Tsutomu Kurita, Satoshi Suzuki, Mitsuo Koizumi, Masafumi Tanigawa, Hironobu Nakamura

Publikováno v: Journal of Nuclear Science and Technology. 55:792-804

Nuclear material in reprocessing facilities is safeguarded by random sample verification with additional process monitoring applied to solution masses and volumes within the tanks to maintain conti...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::72cb3b63cb4bf9f4e83e823aaafc16d6
https://doi.org/10.1080/00223131.2018.1439412

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Delayed gamma-ray spectroscopy combined with active neutron interrogation for nuclear security and safeguards

Autor: Jan Heyse, C. Paradela, Willy Mondelaers, Masatoshi Kureta, Jean-Michel Crochemore, Michio Seya, Tatjana Bogucarska, Fabiana Rossi, Peter Schillebeeckx, J. Takamine, Mitsuo Koizumi, Kamel Abbas, Bent Pederson, Giovanni Varasano, Douglas Chase Rodriguez

Publikováno v: EPJ Web of Conferences, Vol 146, p 09018 (2017)

For the purpose of nuclear security and safeguards, an active neutron interrogation non-destructive assay technique, Delayed Gamma-ray Spectroscopy (DGS), is under development. The technique of DGS uses the detection of decay γ rays from fission pro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7cc08d204971520e74785ff0bc628bfe
https://doaj.org/article/51d25162a48541f499f8c39730a776d5

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Influence of the neutron transport tube on neutron resonance densitometry

Autor: Fumito Kitatani, Tadafumi Sano, J. Takamine, Mitsuo Koizumi, Jun-ichi Hori, Harufumi Tsuchiya

Publikováno v: EPJ Web of Conferences, Vol 146, p 09032 (2017)

Neutron Resonance Densitometry (NRD) is a non-destructive assay technique of nuclear materials in particle-like debris that contains various materials. An aim of NRD is to quantify nuclear materials in a melting fuel of Fukusima Daiichi plant, spent

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ccc87a667a35f34915b1214c46e2e086
https://doaj.org/article/b6afdc509fca4cbe80794d990cf8bbb0

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Uncertainty assessment of neutron resonance transmission analysis using the linear absorption model

Autor: Michio Seya, J. Takamine, Masatoshi Kureta, Fumito Kitatani, Hideo Harada

Publikováno v: Journal of Nuclear Science and Technology. 51:1107-1113

Neutron resonance densitometry (NRD) has been proposed to quantify nuclear materials in particle-like debris of melted spent nuclear fuel formed in severe nuclear reactor accidents. The NRD is a hybrid technique of the neutron resonance transmission

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7ed6718cf31bf6c8c4228a83cdb5cccf
https://doi.org/10.1080/00223131.2014.911127

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Analysis of Pu Isotopes in Melted Fuel by Neutron Resonance Transmission: Examination by Linear Absorption Model

Autor: J. Takamine, Masatoshi Kureta, Hideo Harada, Fumito Kitatani, Michio Seya

Publikováno v: Nuclear Data Sheets. 118:505-509

We have been studying the feasibility of neutron resonance transmission analysis (NRTA) for quantifying nuclear materials (Pu/U isotopes) in particle-like debris of melted fuel for nuclear material accountability and safeguards. The achievable measur

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::aa4052b9d5e50cd55f4c5037d949fe90
https://doi.org/10.1016/j.nds.2014.04.119

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A Monte Carlo simulation to study a design of a gamma-ray detector for neutron resonance densitometry

Autor: Harufumi Tsuchiya, Masatoshi Kureta, Mitsuo Koizumi, H. Iimura, Fumito Kitatani, Hideo Harada, J. Takamine

Publikováno v: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 729:338-345

Neutron resonance densitometry (NRD) has been proposed to quantify nuclear materials in melted fuel (MF) that will be removed from the Fukushima Daiichi nuclear power plant. The problem is complex due to the expected presence of strong neutron absorb

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6334a0a2d1eb1cf8a0d302d8774420cc
https://doi.org/10.1016/j.nima.2013.07.075

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