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  • 1 Gent University Laboratory of Analytical Chemistry, Institute for Nuclear Sciences Proeftuinstraat 86 B-9000 Gent (Belgium)
  • 2 Tohoku University Laboratory of Nuclear Science Sendai Japan
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Abstract  

A dedicated NAA calibration method was developed for the determination of the neutron spectrum monitor elements Co, Au and Lu in alloyed wires and foils, with an accuracy of better than 1%. The method does not require quantitative micropipetting for preparing the standards, and leads to vanishing errors caused by flux inhomogeneities and by differences in counting geometry and gamma attenuation. Its performance was tested by analysing various NIST, IRMM and RX aluminium-based materials with certified or specified Co, Au or Lu content.