Production date determination of uranium-oxide materials by inductively coupled plasma mass spectrometry

Varga, Zsolt; Surányi, Gergely

doi:10.1016/j.aca.2007.07.069

Cited by 57 publications

(38 citation statements)

References 15 publications

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“…Varga and Surányi also demonstrated that both solution-based single-collector ICP-SFMS and LA-ICP-SFMS can be used for the determination of the production date of UO 2 material, based on the 230 Th/ 234 U ratio. 168 In the case of solution analysis, spectral interferences were avoided by prior chromatographic separation. In the case of LA-ICP-SFMS this was accomplished by measuring at higher mass resolution.…”

Section: Radionuclide Analysismentioning

confidence: 99%

Inductively Coupled Plasma Mass Spectrometry

Jakubowski

Horsky

Roos

et al. 2014

Sector Field Mass Spectrometry for Elemental and Isotopic Analysis

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ICP-MS is based on the formation of (preferentially monovalent positively) charged atomic ions in an inductively coupled Ar plasma at almost 10 000 K. The ions formed are transferred from the plasma source at ambient pressure into a mass separator operated at high vacuum via a set of cones. The ions are separated according to their mass/charge ratio in the mass separator (quadrupole, magnetic sector field or time-of-flight mass separator). In most cases, the ions are detected using a secondary electron multiplier; in some set-ups (also) a Faraday cup can be used. Single-collector (scanning mass spectrometer usually used for quantitative elemental analysis) or multicollector (static operation of mass spectrometer for precise isotope ratio analysis) configurations can be found (Figures 12.1 and 12.2).

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Section: Radionuclide Analysismentioning

confidence: 99%

Inductively Coupled Plasma Mass Spectrometry

Jakubowski

Horsky

Roos

et al. 2014

Sector Field Mass Spectrometry for Elemental and Isotopic Analysis

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“…Besides these parameters, the elapsed time since the last chemical purification of the material (commonly referred to as the "age" of the material) can also be measured for radioactive (nuclear) materials (Pointurier et al, 2013;Varga and Surányi, 2007;Wallenius et al, 2002;Williams and Gaffney, 2011). This unique possibility is based on exploiting the presence and decay of radioactive nuclides (usually isotopes of uranium or plutonium as the major component in case of nuclear materials): in the course of production, the radionuclide is chemically purified from impurities, including also its radioactive decay products.…”

Section: Introductionmentioning

confidence: 99%

Validation of reference materials for uranium radiochronometry in the frame of nuclear forensic investigations

Varga

Mayer

Bonamici

et al. 2015

Applied Radiation and Isotopes

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The results of a joint effort by expert nuclear forensic laboratories in the area of age dating of uranium, i.e. the elapsed time since the last chemical purification of the material are presented and discussed. Completely separated uranium materials of known production date were distributed among the laboratories, and the samples were dated according to routine laboratory procedures by the measurement of the (230)Th/(234)U ratio. The measurement results were in good agreement with the known production date showing that the concept for preparing uranium age dating reference material based on complete separation is valid. Detailed knowledge of the laboratory procedures used for uranium age dating allows the identification of possible improvements in the current protocols and the development of improved practice in the future. The availability of age dating reference materials as well as the evolvement of the age dating best-practice protocol will increase the relevance and applicability of age dating as part of the tool-kit available for nuclear forensic investigations.

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“…Varga and Suranyi also demonstrated that both solution-based single-collector ICP-SFMS and LA-ICP-SFMS can be used for the determination of the production date of UO 2 material, based on the 230 Th/ 234 U ratio. 292 In the case of solution analysis, spectral interferences were avoided by prior chromatographic separation. In the case of LA-ICP-SFMS this was accomplished by measuring at higher mass resolution.…”

Section: Radionuclide Applicationsmentioning

confidence: 99%