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Iwamoto, Osamu
Kaku Deta Nyusu (Internet), (134), p.32 - 33, 2023/02
no abstracts in English
Fukahori, Tokio
Kaku Deta Nyusu (Internet), (134), p.34 - 45, 2023/02
On the occasion of the 60th anniversary of the founding of the Sigma Committee in the Atomic Energy Society of Japan, we will attempt to record and preserve its history as a reference for future activities.
Koura, Hiroyuki
Kaku Deta Nyusu (Internet), (134), p.82 - 96, 2023/02
no abstracts in English
Iwamoto, Osamu; Iwamoto, Nobuyuki; Kimura, Atsushi; Tada, Kenichi; Sugawara, Takanori; Yokoyama, Kenji
Kaku Deta Nyusu (Internet), (133), p.1 - 6, 2022/10
no abstracts in English
Nakayama, Shinsuke
Kaku Deta Nyusu (Internet), (133), p.88 - 99, 2022/10
The content of the paper that received the Paper Award of Atomic Energy Society of Japan in 2021 is outlined. Although the use of deuteron accelerator-based neutron sources has been proposed in various fields, deuteron nuclear database accurate enough to be applied to the design study of such neutron sources had not been developed. Under these situations, we had developed a deuteron nuclear database, JENDL/DEU-2020. It contains evaluated deuteron nuclear data for light nuclei (
Li, 
Be, 
C), which are candidates for deuteron beam irradiation targets of the neutron sources. Evaluation of JENDL/DEU-2020 was performed by using the code system DEURACS with further modifications. In order to validate the accuracy of the database, simulations using the particle transport code were performed under various conditions with different target nuclides and incident deuteron energies, and the results were compared with the available experimental data. As a result, it was found that JENDL/DEU-2020 significantly improves the prediction accuracy of experimental data under a wider range of conditions than other nuclear reaction databases or the nuclear reaction models implemented in transport calculation codes.
Okumura, Keisuke
Kaku Deta Nyusu (Internet), (133), p.63 - 67, 2022/10
no abstracts in English
Koura, Hiroyuki
Kaku Deta Nyusu (Internet), (133), p.44 - 48, 2022/10
no abstracts in English
Koura, Hiroyuki
Kaku Deta Nyusu (Internet), (133), p.49 - 54, 2022/10
no abstracts in English
Iwamoto, Nobuyuki
Kaku Deta Nyusu (Internet), (133), p.55 - 62, 2022/10
no abstracts in English
Yokoyama, Kenji; Taninaka, Hiroshi
Kaku Deta Nyusu (Internet), (132), p.25 - 33, 2022/06
This article explains the results of integral test of JENDL-5 by benchmark analysis in fast reactor system, which were presented in a special session of the 2022 Spring Annual Meeting of the Atomic Energy Society of Japan (AESJ). The latest version of Japanese evaluated nuclear data library, JENDL-5, was released in December 2021. In order to confirm the applicability of JENDL-5 to the fast reactor system, we conducted a set of benchmark analysis using the integral experiment data included in the fast reactor nuclear design database which is being developed by JAEA. With respect to major nuclear characteristics in the standard fast reactor system, it was confirmed that the ratios of analysis result and experimental result (C/E values) based on JENDL-5 were almost the same as those of JENDL-4.0. In the special session, the results of sensitivity analysis were reported. Since the results have been described in the proceedings of the AESJ meeting, we add the results of the versions under development of JENDL-5 and discuss their relationship with the reported results of sensitivity analysis.
Iwamoto, Osamu
Kaku Deta Nyusu (Internet), (132), p.1 - 8, 2022/06
no abstracts in English
Nakayama, Shinsuke
Kaku Deta Nyusu (Internet), (130), p.25 - 28, 2021/10
The outline of the presentation at the joint session of Research Committee for Nuclear Data and Subcommittee on Nuclear Data in the Atomic Energy Society of Japan 2021 Autumn Meeting was contributed to Nuclear Data News. Research Committee for Nuclear Data has been preparing the nuclear data roadmap aiming for completion by the end of FY 2022. The contents of the presentation such as the background, progress, and future plan of the roadmap are described. In addition, impressions regarding the roadmap development policy obtained from the discussions on the presentation are also described.
Iwamoto, Osamu; Iwamoto, Nobuyuki; Kimura, Atsushi; Tada, Kenichi
Kaku Deta Nyusu (Internet), (130), p.9 - 15, 2021/10
The 33rd annual meeting and the subgroup meeting of the Working Party on International Nuclear Data Evaluation Co-operation (WPEC) under the Nuclear Energy Agency of the Organization for Economic Co-operation and Development (OECD/NEA) was held via a web meeting system from 10 to 14 in May in 2021. The activities about nuclear data measurement and evaluation of each region or country were reported at the annual meeting, and the SG activities were discussed at the subgroup meetings. The summary of these meetings are reported.
Suyama, Kenya
Kaku Deta Nyusu (Internet), (130), p.29 - 34, 2021/10
This manuscript describers the appearance of Japanese Evaluated Nuclear Data Library (JENDL) for Europe, the status of the main nuclear data library of European countries, i.e., Joint Evaluated Fission and Fusion (JEFF) Nuclear Data Library and the future of evaluation of the nuclear data, based on the experience of working at OECD/NEA Data Bank which manages the development of JEFF.
Harada, Hideo
Kaku Deta Nyusu (Internet), (129), p.35 - 43, 2021/06
This paper explained the activities of the International Nuclear Data Evaluation Co-operation (WPEC)'s subgroup SG-41, which was carried out to improve the accuracy of nuclear data. In this paper, by focusing on how to deal with discrepant data, the method of deriving recommended values from multiple measurement results was reviewed. It also explained how to derive the recommended values, including exercises.
Suyama, Kenya
Kaku Deta Nyusu (Internet), (129), p.44 - 53, 2021/06
I have returned to Japan after finishing 3 year contract from with OECD/NEA. This manuscript summarizes my thoughts in France, that I had been considering during the continuous teleworking because of COVID-19 pandemic broke out from the last year.
Iwamoto, Hiroki
Kaku Deta Nyusu (Internet), (129), p.19 - 25, 2021/06
no abstracts in English
Iwamoto, Hiroki
Kaku Deta Nyusu (Internet), (128), p.13 - 25, 2021/02
no abstracts in English
Iwamoto, Osamu; Iwamoto, Nobuyuki; Kimura, Atsushi; Tada, Kenichi
Kaku Deta Nyusu (Internet), (127), p.1 - 10, 2020/10
The 32nd annual meeting and the subgroup meeting of the Working Party on International Nuclear Data Evaluation Co-operation (WPEC) under the Nuclear Energy Agency of the Organisation for Economic Co-operation and Development (OECD/NEA) was held via a web meeting system from 11 to 15 in May in 2020. The activities about nuclear data measurement and evaluation of each region or country were reported at the annual meeting, and the SG activities were discussed at the subgroup meetings. The summary of these meetings are reported.
Kimura, Atsushi
Kaku Deta Nyusu (Internet), (127), p.28 - 33, 2020/10
no abstracts in English
