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Recalibration of the irradiation facilities in the Thetis reactor, with an examination of the a versus E behavior in the keV neutron energy range

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Abstract

The reloading of research reactor Thetis (INW, Gent), in April 1996, involved the re-calibration of the irradiation facilities used for k 0-NAA. In some channels, the values of the re-measured parameters f and a significantly deviated from the ones before reloading, and the effect of this on the concentration results is demonstrated. Some additional experimental work was done in two irradiation facilities, one well-thermalized and another with a hard neutron spectrum, in order to examine the behavior of a with neutron energies up to about 60 keV. This study was performed in the context of a lasting controversy regarding the accuracy of the k 0 and Q 0 values for the 95,97Zr-isotopes, especially in view of the high 94Zr(n,g) effective resonance energy. In the irradiation channels under consideration, no evidence was found of a versus energy dependence

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Authors and Affiliations

  1. Lab. Anal. Chem., Inst. Nucl. Sci., Ghent University, Proeftuinstraat 86, B-9000, Gent, Belgium

    A. De Wispelaere

  2. Laboratory of Analytical Chemistry, Institute of Nuclear Science (INW), Gent University, Institut voor Nucleaire Wetenschappen, Proeftuinstraat 86, B-9000, Gent, Belgium

    F. De Corte

Authors
  1. A. De Wispelaere
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  2. F. De Corte
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De Wispelaere, A., De Corte, F. Recalibration of the irradiation facilities in the Thetis reactor, with an examination of the a versus E behavior in the keV neutron energy range. Journal of Radioanalytical and Nuclear Chemistry 257, 519–523 (2003). https://doi.org/10.1023/A:1025476112168

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  • DOI: https://doi.org/10.1023/A:1025476112168

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