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Abstract

Noble gas stable isotope abundance measurements may provide a tool to detect reprocessing activities. An approach has been made by carrying out blending calculations of released fission Xenon and Krypton in air using the Isotope Mixture Programs which have been developed at the Institute for Reference Materials and Measurements (IRMM). After having obtained a reliable approximation to the expected range of the isotope ratios in the blends and the respective detection limit thereof through these calculations, the potential application of ultra-accurate measurements of the isotopic composition of anthropogenic and atmospheric noble gases are taken into consideration. Also the important role of radiometric measurements of (85)Kr and (133)Xe in reprocessing detection is taken into account. The information provided by activity measurements is limited, therefore a method to recalculate the initial isotopic composition of released fission noble gases, through measuring of atmospheric blends, is presented and discussed. Highly accurate stable isotopic measurements of atmospheric noble gases might be able to provide more detailed information of the history of the reprocessed nuclear fuel. Therefore they could serve, in combination with radiometric detection techniques, as an excellent tool for the identification of reprocessing activities.

Additional information

Authors: AREGBE Y, JRC Geel (BE);MAYER K, JRC Geel (BE);VALKIERS S, JRC Geel (BE);DE BIÈVRE P, JRC Geel (BE)
Bibliographic Reference: Article : Fresenius' Journal of Analytical Chemistry (1996)
Record Number: 199610913 / Last updated on: 1996-09-16
Category: PUBLICATION
Original language: en
Available languages: en