Comprehensive validation of fluorine cross-sections

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F25%3AN0000028" target="_blank" >RIV/26722445:_____/25:N0000028 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14330/25:00143693
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0306454925002439" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0306454925002439</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.anucene.2025.111426" target="_blank" >10.1016/j.anucene.2025.111426</a>

Result language
angličtina
Original language name
Comprehensive validation of fluorine cross-sections
Original language description
The study utilized a PTFE block with a 252Cf neutron source to measure neutron leakage flux and reaction rate distribution. Hydrogen proportional detectors and stilbene scintillators were employed for spectrum measurement. The experimental setup included various activation foils to measure reaction rates, providing a detailed analysis of neutron interactions with fluorine. The results highlighted discrepancies between measured and calculated neutron spectra, emphasizing the need for continuous refinement of nuclear data libraries. The study compared several libraries, including ENDF/B-VIII.0, JEFF-3.3, JENDL-5, and the INDEN fluorine evaluation. It was found that all libraries underpredict measured spectrum in lower energies. Namely below 1.9 MeV in the INDEN fluorine evaluation, below 4.8 MeV in JEFF-3.3 and ENDF/B-VIII.0. JENDL-5 is out of one sigma uncertainty for almost the whole tested energy range. Reaction rate measurements further validated the cross-sections, revealing significant discrepancies in the JENDL-5 library in lower energies. The findings underscore the importance of accurate cross-sections for reliable neutron transport simulations. The study advocates for the adoption of updated cross-sections in nuclear data libraries to enhance simulation accuracy.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20305 - Nuclear related engineering; (nuclear physics to be 1.3);

Project
<a href="/en/project/LM2023041" target="_blank" >LM2023041: Czech International Centre of Research Reactors</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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