Abstract
There is often a need to calculate isotopic uranium activities from total uranium mass or gamma spectrometry measurement data. This calculation is based on a model of the relationship of the234U activity to that of235U since both are enriched together in the normal gaseous diffusion enrichment process. This paper presents equations for calculating these activities that have been developed from several sources of data. These equations have been used for several characterization studies and have produced very good results when compared to results from actual isotopic uranium analyses. However, because the variability in the model causes significant uncertainty in the calculated results, alpha-spectrometry is recommended for critical applications.
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Rucker, T.L., Johnson, C.M. Relationship between isotopic uranium activities and total uranium at various uranium enrichments. J Radioanal Nucl Chem 235, 47–52 (1998). https://doi.org/10.1007/BF02385936
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DOI: https://doi.org/10.1007/BF02385936