Abstract
2200 m/s cross-section ( σ 0) values for the 174Yb(n,γ) 175Yb reaction show an astonishingly large scatter (60–141 barn) in the literature. A recent measurement for absolute γ-ray emission probabilities of 175Yb seems to explain this anomaly by revealing uncertainties of the same magnitude in earlier determinations. Cross-section measurements based mainly on the activation method are, therefore, re-evaluated and the general use of the k 0-standardization method is again strongly recommeded for absolute neutron activation analysis.
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