Experimental k 0 and k 0-fission factors for the determination of the n(235U)/n(238U) enrichment levels and correction for 235U fission interferences in samples containing uranium |
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Authors: | F. Farina Arboccò P. Vermaercke K. Smits L. Sneyers K. Strijckmans |
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Affiliation: | 1. Department of Analytical Chemistry, Ghent University, Krijgslaan 281 S12, 9000, Ghent, Belgium 2. k0-INAA Laboratory, Studiecentrum voor Kernenergie - Centre d’étude de l’énergie nucléaire (SCK-CEN), Belgian Nuclear Research Centre, Boeretang 200, 2400, Mol, Belgium
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Abstract: | In 2010 we investigated the applicability of the current k 0 and k 0-fission factors for the determination of the n(235U)/n(238U) isotopic ratio in multi-elemental samples containing uranium. An overestimation 3–4 % was observed in our determinations when employing the recommended 2003 k 0-literature. After a recalibration of all our laboratory instruments, a 3 % overestimation was still observed in this work when employing this nuclear data. Therefore we aimed at the experimental re-determination of these composite nuclear constants in order to enhance the reliability of the isotopic ratio determination method and the accuracy of our data-filtering algorithms. New k 0-fission factors are given for 7 nuclides that are not currently present in the 2012 k 0-database. Several additional k 0 factors are introduced for some nuclides in this library. Our k 0 results are also compared with those recently reported by Blaauw et al. |
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