| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7967700 | Journal of Nuclear Materials | 2014 | 4 Pages |
Abstract
A transversal mapping of the Gd concentration was measured in UO2-Gd2O3 nuclear fuel pellets by electron paramagnetic resonance spectroscopy (EPR). The quantification was made from the comparison with a Gd2O3 reference sample. The nominal concentration in the pellets is UO2: 7.5% Gd2O3. A concentration gradient was found, which indicates that the Gd2O3 amount diminishes towards the edges of the pellets. The concentration varies from (9.3 ± 0.5)% in the center to (5.8 ± 0.3)% in one of the edges. The method was found to be particularly suitable for the precise mapping of the distribution of Gd3+ ions in the UO2 matrix.
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Nuclear Energy and Engineering
Authors
D. Tobia, E.L. Winkler, J. Milano, A. Butera, R. Kempf, L. Bianchi, F. Kaufmann,