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Experimental k0 and k0-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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Abstract
In 2010 we investigated the applicability of the current k (0) and k (0)-fission factors for the determination of the n(U-235)/n(U-238) 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.
Keywords
k(0) Factor, Neutron activation analysis, Uranium, Enrichment, Depletion, U-235 fission, U-238 activation, ACTIVATION-ANALYSIS, CROSS-SECTIONS, NUCLEAR-DATA, ENDF/B-VII.1, DEPENDENCE, K(0)-NAA, NAA

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Citation

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Chicago
Farina, Fulvio, Peter Vermaercke, Katrien Smits, Liesel Sneyers, and Karel Strijckmans. 2014. “Experimental K0 and K0-fission Factors for the Determination of the n(235U)/n(238U) Enrichment Levels and Correction for 235U Fission Interferences in Samples Containing Uranium.” Journal of Radioanalytical and Nuclear Chemistry 302 (1): 721–735.
APA
Farina, Fulvio, Vermaercke, P., Smits, K., Sneyers, L., & Strijckmans, K. (2014). Experimental k0 and k0-fission factors for the determination of the n(235U)/n(238U) enrichment levels and correction for 235U fission interferences in samples containing uranium. JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 302(1), 721–735.
Vancouver
1.
Farina F, Vermaercke P, Smits K, Sneyers L, Strijckmans K. Experimental k0 and k0-fission factors for the determination of the n(235U)/n(238U) enrichment levels and correction for 235U fission interferences in samples containing uranium. JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY. 2014;302(1):721–35.
MLA
Farina, Fulvio, Peter Vermaercke, Katrien Smits, et al. “Experimental K0 and K0-fission Factors for the Determination of the n(235U)/n(238U) Enrichment Levels and Correction for 235U Fission Interferences in Samples Containing Uranium.” JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY 302.1 (2014): 721–735. Print.
@article{4422145,
  abstract     = {In 2010 we investigated the applicability of the current k (0) and k (0)-fission factors for the determination of the n(U-235)/n(U-238) 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.},
  author       = {Farina, Fulvio and Vermaercke, Peter and Smits, Katrien and Sneyers, Liesel and Strijckmans, Karel},
  issn         = {0236-5731},
  journal      = {JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY},
  keyword      = {k(0) Factor,Neutron activation analysis,Uranium,Enrichment,Depletion,U-235 fission,U-238 activation,ACTIVATION-ANALYSIS,CROSS-SECTIONS,NUCLEAR-DATA,ENDF/B-VII.1,DEPENDENCE,K(0)-NAA,NAA},
  language     = {eng},
  number       = {1},
  pages        = {721--735},
  title        = {Experimental k0 and k0-fission factors for the determination of the n(235U)/n(238U) enrichment levels and correction for 235U fission interferences in samples containing uranium},
  url          = {http://dx.doi.org/10.1007/s10967-014-3275-y},
  volume       = {302},
  year         = {2014},
}

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