Title: Development of an Improved Method to Perform Single Particle Analysis by TIMS for Nuclear Safeguards
Citation: ANALYTICA CHIMICA ACTA vol. 688 no. 1 p. 1-7
Publication Year: 2011
JRC N°: JRC61272
ISSN: 0003-2670
URI: www.elsevier.com/locate/aca
DOI: 10.1016/j.aca.2010.12.003
Type: Articles in periodicals and books
Abstract: A method is described that allows measuring the isotopic composition of small uranium oxide particles (less than 1 µm in diameter) for nuclear safeguards purposes. In support to the development of reliable tools for the identification of uranium and plutonium signatures in trace amounts of nuclear materials, improvements in Scanning Electron Microscopy (SEM) en Thermal Ionization Mass Spectrometry (TIMS) in combination with filament carburization and Multiple Ion Counting (MIC) detection were investigated. The method that has been set up enables the analysis of single particles by a combination of analytical tools, thus yielding morphological, elemental and isotopic information. Hereby individual particles of certified reference materials containing uranium at femtogram levels were analyzed. The results should that the combination of techniques proposed in this work is suitable for the accurate determination of uranium isotope ratios in single particles with improved capabilities for the minor abundant isotopes.
JRC Directorate:Health, Consumers and Reference Materials

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