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Verification measurements of the IRMM-1027 and the IAEA large-sized dried (LSD) spikes
R Jakopič1, Y Aregbe1, S Richter1
1European Commission, Joint Research Centre (JRC), Directorate for Nuclear Safety and Security, Standards for Nuclear Safety, Security and Safeguards Unit, Retieseweg 111, 2440 Geel, Belgium.
Abstract:
In the frame of the accountancy measurements of the fissile materials, reliable determinations of the plutonium and uranium content in spent nuclear fuel are required to comply with international safeguards agreements. Large-sized dried (LSD) spikes of enriched 235U and 239Pu for isotope dilution mass spectrometry (IDMS) analysis are routinely applied in reprocessing plants for this purpose. A correct characterisation of these elements is a pre-requirement for achieving high accuracy in IDMS analyses. This paper will present the results of external verification measurements of such LSD spikes performed by the European Commission and the International Atomic Energy Agency.
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