Abstract
A combined γ-spectrometric and mass-spectrometric determination of237Np in spent nuclear fuels using239Np as an inherent spike has been developed. In spent fuel239Np is in radiochemical equilibrium with243Am. Neptunium in the tetravalent state is separated by TTA solvent extraction from the other actinides and most of the fission products and the γ-activity ratio of237Np to239Np is measured. The237Np activity is via239Np directly linked to the243Am mass in a sample, which is determined by mass-spectrometric isotope dilution analysis.
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Schedule a callMore From: Journal of Radioanalytical and Nuclear Chemistry Letters
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