IRDFF-II: A New Neutron Metrology Library

0522238 - ÚJF 2021 RIV US eng J - Journal Article
Trkov, A. - Griffin, P. J. - Simakov, S. P. - Greenwood, L. R. - Zolotarev, K. I. - Capote, R. - Aldama, D. L. - Chechev, V. - Destouches, C. - Kahler, A. C. - Konno, C. - Košťál, M. - Majerle, Mitja - Malambu, E. - Ohta, M. - Pronyaev, V. G. - Radulovic, V. - Sato, S. - Schulc, M. - Šimečková, Eva - Vavtar, I. - Wagemans, J. - White, M. - Yashima, H.
IRDFF-II: A New Neutron Metrology Library.
Nuclear Data Sheets. Roč. 163, č. 1 (2020), s. 1-108. ISSN 0090-3752. E-ISSN 1095-9904
R&D Projects: GA MŠMT LM2015056
Institutional support: RVO:61389005
Keywords : nuclear reaction data * cross-section data * treshold reactions
OECD category: Nuclear physics
Impact factor: 10.941, year: 2020
Method of publishing: Limited access
https://doi.org/10.1016/j.nds.2019.12.001

This paper describes the release of version II of the International Reactor Dosimetry and Fusion File (IRDFF-II) that contains a consistent set of nuclear data for fission and fusion neutron metrology applications up to 60 MeV neutron energy. The library is intended to support: a) applications in research reactors b) safety and regulatory applications in the nuclear power generation in commercial fission reactors and c) material damage studies in support of the research and development of advanced fusion concepts. The new IRDFF-II library includes 119 metrology reactions, four cover material reactions to support self-shielding corrections, five metrology metrics used by the dosimetry community, and cumulative fission products yields for seven fission products in three different neutron energy regions. In support of characterizing the measurement of the residual nuclei from the dosimetry reactions and the fission product decay modes, the present document lists the recommended decay data, particle emission energies and probabilities for 68 activation products. It also includes neutron spectral characterization data for 29 neutron benchmark fields for the validation of the library contents. Additional six reference fields were assessed (four from plutonium critical assemblies, two measured fields for thermal-neutron induced fission on U-233 and Pu-239 targets) but not used for validation due to systematic discrepancies in C/E reaction rate values or lack of reaction-rate experimental data. Another ten analytical functions are included that can be useful for calculating average cross sections, average energy thermal spectrum average cross sections and resonance integrals. The IRDFF-II library and comprehensive documentation is available online at www-nds.iaea.org/IRDFF/. Evaluated cross sections can be compared with experimental data and other evaluations at https://www-nds.iaea.org/exfor/endf.htm
Permanent Link: http://hdl.handle.net/11104/0306762