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Litaize, O.*; Piau, V.*; Chalil, A.*; 小川 達彦; Chebboubi, A.*; G
k, A.*; Gunsing, F.*; Kessedjian, G.*; Lhuillier, D.*; Mancusi, D.*; et al.
EPJ Web of Conferences, 284, p.04014_1 - 04014_4, 2023/05
被引用回数：1 パーセンタイル：0.00(Nuclear Science & Technology)CEAが開発を進めるFIFRELINは、核分裂における観測量を計算する目的で開発された核分裂計算コードである。本発表では、同コードを放射線輸送計算コードPHITSと接続した計算コードシステムの開発、中性子捕獲反応に適用するための拡張、さらに核分裂片から生成するニュートリノの計算を行う拡張についての成果を報告する。中性子捕獲反応に適用するための拡張では、準位密度パラメータを核種や励起エネルギーに応じて調整することで、実験値と合致するガンマ線の収量を得ることができた。核分裂片から生成するニュートリノの計算については、中性子捕獲直後の励起状態に関するデータを更新することで、正確な予測が可能になった。原子力機構では、本研究で放射線輸送計算コードPHITSとの接続を進め、FIFRELIN-DCHAINの燃焼計算によるFIFRELINの新しいベンチマーク計算が可能になることを示した。
Rodriguez, D. C.; Abbas, K.*; Bertolotti, D.*; Bonaldi, C.*; Fontana, C.*; 藤本 正己*; Geerts, W.*; 小泉 光生; Macias, M.*; Nonneman, S.*; et al.
Proceedings of INMM & ESARDA Joint Annual Meeting 2023 (Internet), 8 Pages, 2023/05
Under the MEXT subsidy to improve nuclear security related activities, we present the overview of the JAEA-JRC delayed gamma-ray spectroscopic analysis project. We describe past results, recent joint experiments, and the final goals for this project.
Rodriguez, D. C.; 小泉 光生; Rossi, F.; 高橋 時音; Abbas, K.*; Nonneman, S.*; Pedersen, B.*; Oberstedt, S.*; Schillebeeckx, P.*
Proceedings of International Safeguards; Reflecting on the Past and Anticipating the Future, 7 Pages, 2022/10
Under the MEXT subsidy to develop nuclear security, the ISCN is investigating the Delayed Gamma-ray Spectroscopic analysis technique to evaluate mixed nuclear materials. Primarily we are focusing on developing the analysis for any form of mixed nuclear material, but dominantly used nuclear fuel that is challenging due to the long-lived fission products and minor actinides hiding the U and Pu signatures. We describe the analysis we are developing and the associated instrumentation to interrogate the sample. We show that this can be applied to small samples and assemblies, as well as alternative fuel cycle materials.
Rodriguez, D. C.; Abbas, K.*; 小泉 光生; Nonneman, S.*; Oberstedt, S.*; Pedersen, B.*; Rossi, F.; Schillebeeckx, P.*; 高橋 時音
Proceedings of INMM 63rd Annual Meeting (Internet), 9 Pages, 2022/09
Under the MEXT subsidy to develop nuclear security related technology, we present the overview and ISCN analysis development of the Delayed Gamma-ray Spectroscopic Analysis project. We summarize the past analysis and instrumentation results and highlight how this affects the evaluation of fissile nuclides in spent nuclear fuel. We further discuss the direction of the third development phase.
Rodriguez, D. C.; Abbas, K.*; 小泉 光生; Lee, H.-J.; Nonneman, S.*; Oberstedt, S.*; Pedersen, B.*; Rossi, F.; Schillebeeckx, P.*; 高橋 時音
第42回日本核物質管理学会年次大会会議論文集(インターネット), 4 Pages, 2021/11
Under the MEXT subsidy to promote nuclear security related development, we present our current and future delayed gamma-ray development results. We highlight recent study results from both the analysis and instrument development perspectives and summarize the final steps needed to provide a viable safeguards verification capability.
Rodriguez, D. C.; 小泉 光生; Lee, H.-J.; Rossi, F.; 高橋 時音; Abbas, K.*; Nonneman, S.*; Oberstedt, S.*; Pedersen, B.*; Schillebeeckx, P.*
第41回日本核物質管理学会年次大会会議論文集(インターネット), 4 Pages, 2020/11
Within the MEXT subsidy for promoting nuclear security related activities, the Japan Atomic Energy Agency is developing Delayed Gamma-ray Spectroscopy (DGS) that can be used to evaluate the fissile content in small samples. Nuclear material accountancy is challenging for mixed nuclear materials, especially those containing fission products and minor actinides are even more challenging since they hide the direct passive U and Pu signatures. This presentation describes the scope of the challenges we are addressing; our experimental campaigns, including those with the European Commission Joint Research Centre; and our final goal of developing a DGS instrument to interrogate the small samples found in reprocessing and MOX fuel fabrication plants.
