Quantifying inhomogneities in heterogeneous nuclear fuel pellets by neutron resonance transmission analysis
Inhomogeneities in nuclear fuel in which burnable poison are incorporated can induce sizeable effects on neutronic parameters such as the reactivity loss as a function of nuclear fuel burnup. These inhomogeneities can be identified using non-destructive analysis techniques. Measurements carried out at the GELINA facility (JRC-Geel, Belgium) on enriched UO–GdO fuel pellets have confirmed that Neutron Resonance Transmission Analysis (NRTA) can be a non-destructive testing method suitable for studying heterogeneous materials and highlighting inhomogeneities on the scale of several tens of microns in sintered pellets. The performances of the NRTA was studied thanks to a Monte-Carlo model relying on an analytical particle self-shielded correction factor proposed by Doub.
NOGUERE G.;
PARADELA DOBARRO Carlos;
KOPECKY Stefan;
SCHILLEBEECKX Peter;
2026-03-12
ELSEVIER
JRC145565
1872-9576 (online),
https://doi.org/10.1016/j.nima.2025.170460,
https://www.sciencedirect.com/science/article/pii/S016890022500261X?via%3Dihub,
https://publications.jrc.ec.europa.eu/repository/handle/JRC145565,
10.1016/j.nima.2025.170460 (online),
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