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  • 1 Laboratory of Analytical Chemistry, Institute for Nuclear Sciences (INW), Ghent University Proeftuinstraat 86, B-9000 Gent, Belgium
  • 2 Laboratory of Analytical Chemistry, Institute for Nuclear Sciences (INW), Ghent University Proeftuinstraat 86, B-9000 Gent, Belgium
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Summary  

The use of a Zr-Au-Lu alloy allows the simultaneous determination of all neutron spectrum parameters relevant to the k-0standardization of NAA, in terms of both the Høgdahl and the Westcott convention. The present paper reports on the fundamental aspects (theoretical considerations, desired composition; gamma-spectrometry protocol) of this “all-in-one” alloy and on the experimental results (radiation stability; homogeneity tests) obtained for a variety of prototypes that were produced by some firms specialized in alloying technology. It is concluded that for the most recently produced material all criteria are fulfilled to pass on to the development of a certified Zr-Au-Lu alloy, which would be quite useful not only in the practice of k-0NAA, but for neutron spectrum monitoring in general.