| Issue |
EPJ Web of Conf.
Volume 284, 2023
15th International Conference on Nuclear Data for Science and Technology (ND2022)
|
|
|---|---|---|
| Article Number | 01022 | |
| Number of page(s) | 4 | |
| Section | Nuclear Reaction Measurements | |
| DOI | https://doi.org/10.1051/epjconf/202328401022 | |
| Published online | 26 May 2023 | |
https://doi.org/10.1051/epjconf/202328401022
On the need for precise nuclear structure data for high quality (n, n’γ) cross-section measurements
1 Université de Strasbourg, CNRS, IPHC/DRS UMR 7178, 23 Rue du Loess, F-67037 Strasbourg, France
2 CEA, DES, IRESNE, DER, SPRC, LEPh, F-13108 Saint-Paul-lez-Durance, France
3 CEA, DAM, DIF, F-91297 Arpajon, France
4 Nuclear Data Section, International Atomic Energy Agency, Wagramer Strasse, A-1400 Vienna, Austria
5 Horia Hulubei National Institute for Physics and Nuclear Engineering, 077125 Bucharest-Măgurele, Romania
6 European Commission, Joint Research Centre, Retieseweg 111, B-2440 Geel, Belgium
* e-mail: ghenning@iphc.cnrs.fr
** Currently, Univ. of Helsinki
Published online: 26 May 2023
The necessary improvement of evaluated nuclear data for nuclear applications development is possible through new and high-quality measurements, often combined with appropriate nuclear-reaction modelling. In particular, improving inelastic cross-section evaluations requires new and high-quality data. We measure (n, n’γ) cross-sections using prompt γ-ray spectroscopy and neutron energy determination by time-of-flight. To extract, from these partial data, the total inelastic cross-section, we rely on theoretical model as well as nuclear structure data such as γ ray emission probabilities. This structure information, tabulated in databases, comes with uncertainty. This directly affects the precision of our results, regardless of how good the measurement is. In this paper, we will present the issue of limited precision structure data and its impact on nuclear reaction data quality in the case of neutron inelastic scattering measurements. We will also discuss how to foresee and mitigate the issue.
© The Authors, published by EDP Sciences, 2023
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