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A Highly-enriched 244Pu Reference Material for Nuclear Safeguards and Nuclear Forensic Measurements



Richard Essex, Ross W. Williams, Kerri C. Treinen, Amelie Hubert, Marc A. Humphrey, Jeremy D. Inglis, William S. Kinman, Joel Maassen, Maxim V. Penkin, Robert E. Steiner


A highly-enriched 244Pu isotope dilution reference material has been prepared and characterized for metrologically traceable measurements of very small quantities of plutonium. The amount of plutonium in samples associated with nuclear safeguards and nuclear forensic measurements can be significantly less than 1 ng. Accordingly, the ability to quantify the amount and isotopic composition of plutonium from a single mass-spectrometric analysis is particularly desirable. The highly-enriched 244Pu reference material, described here, will minimize the magnitude of spike corrections necessary to obtain accurate information on plutonium isotopic composition from isotope dilution measurements.
Journal of Radioanalytical Nuclear Chemistry


plutonium, reference material, isotope dilution mass spectrometry, nuclear safeguards, nuclear forensics, traceabilityPu, traceability


Essex, R. , Williams, R. , Treinen, K. , Hubert, A. , Humphrey, M. , Inglis, J. , Kinman, W. , Maassen, J. , Penkin, M. and Steiner, R. (2021), A Highly-enriched 244Pu Reference Material for Nuclear Safeguards and Nuclear Forensic Measurements, Journal of Radioanalytical Nuclear Chemistry, [online],, (Accessed June 22, 2024)


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Created January 25, 2021, Updated June 24, 2021