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Variation of neutron flux and related parameters in an irradiation container, in use with k0-based neutron activation analysis

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Abstract

Profiles of thermal flux, epithermal flux, f and α have been determined for a multisample irradiation container in use with k0-based NAA. It could be concluded that for accurate NAA with the IRI-reactor, samples should be surrounded by at least two thermal flux monitors. Since f and α values were found to vary considerably between irradiations as compared to the variations within one container, the possibility of determining f and α just once for the irradiation facility used, and monitoring only the thermal flux in future irradiations, was ruled out. The use of average values for f and α within a container was shown to yield unacceptable inaccuracies mainly for Zr and U determinations.

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Author notes

  1. I. Obrusník

    Present address: Nuclear Physics Institute, Czechoslovak Academy of Sciences, Řež, Czechoslovakia

Authors and Affiliations

  1. Interfaculty Reactor Institute, Delft University of Technology, Delft, The Netherlands

    P. Bode, M. Blaauw & I. Obrusník

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  1. P. Bode
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  2. M. Blaauw
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  3. I. Obrusník
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Bode, P., Blaauw, M. & Obrusník, I. Variation of neutron flux and related parameters in an irradiation container, in use with k0-based neutron activation analysis. Journal of Radioanalytical and Nuclear Chemistry, Articles 157, 301–312 (1992). https://doi.org/10.1007/BF02047445

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  • DOI: https://doi.org/10.1007/BF02047445

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