Bulletin of the American Physical Society
6th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Sunday–Friday, November 26–December 1 2023; Hawaii, the Big Island
Session 4WDA: Recent Advances in Nuclear Data Study IInvited Workshop
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Chair: Amy Lovell, Los Alamos Natl Lab Room: Hilton Waikoloa Village Kings 2 |
Monday, November 27, 2023 2:00PM - 2:30PM |
4WDA.00001: Development of JENDL-5 and future perspective Invited Speaker: Osamu Iwamoto The latest version of Japanese evaluated nuclear data library JENDL-5 was released at the end of 2021. In addition to update of the neutron data in the previous version JENDL-4.0, the upper limit of the incident neutron energy more than 70% of the nuclides in the neutron sublibrary was extended to 200 MeV. In addition, the total number of nuclides increased to 795 from the previous number of 406, where activation related data i.e., isomer production information were integrated. JENDL-5 also integrated the various types of reaction data such as photon, proton, deuteron, and alpha-particle induced ones which had been released as special-purpose files of JENDL. Their data were partly updated and complemented to satisfy requirements of radiation transport calculations from the original releases. For the next release of JENDL-5, we are planning to enhance covariance data for neutron reactions whose updates are very limited in JENDL-5. The charged particles reactions, whose data in JENDL-5 are much less than neutron ones, would be also a target of the next release. |
Monday, November 27, 2023 2:30PM - 3:00PM |
4WDA.00002: The Upcoming ENDF/B-VIII.1 Release Invited Speaker: Gustavo P Nobre Nuclear reactors and other nuclear applications play a crucial role in modern society. Both the maintenance of existing systems and the development of new ones require accurate and complete Nuclear Data (ND) to ensure their safe and efficient operation. The main nuclear reaction data library in the United States, and also one of the main ones across the globe, ENDF/B, had its last release (ENDF/B-VIII.0) in 2018 [1]. It contained sub-libraries for neutron, proton, alpha, deuteron, 3He, and gamma projectiles, in addition to thermal neutron scattering law, fission product yields and three atomic sub-libraries. Many developments carried out since then led to important updates to the ND files, in particular for actinides, structural materials and light elements. Some of these contributions are part of the IAEA-coordinated International Nuclear Data Evaluation Network (INDEN) [2]. The scale and impact of these changes justify a new library release, namely ENDF/B-VIII.1, which is planned for early 2024. This upcoming release will be disseminated in both ENDF-6 and GNDS-2.0 formats. In this work we will detail the expected updates in ENDF/B-VIII.1 and discuss the quality-assurance and review methods that were developed and implemented at the National Nuclear Data Center (NNDC, BNL). We will also present and discuss preliminary validation results obtained from Beta versions recently released. |
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