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Investigation of chemical changes in uranium oxyfluoride particles using secondary ion mass spectrometry

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Abstract

Understanding how environmental conditions may affect sample composition is critical to the interpretation of laboratory analyses from environmental sampling. We prepared a set of UO2F2 particle samples from the hydrolysis of UF6 and stored these samples in environmental chambers at different temperature, humidity and lighting conditions. The NanoSIMS ion microprobe was used to measure the UF+/U+ secondary ion ratio of individual particles. Monitoring variations in this ratio may provide insights on changes in particle composition over time and in response to environmental exposure. This report presents the baseline measurements carried out on freshly-prepared particle samples to determine the initial amount of fluorine.

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References

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Acknowledgements

This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under contract DE-AC52-07NA27344 and under the auspices of the European Commission, DG Joint Research Centre under Action Sheet 36. The LLNL effort was supported by the DOE/NNSA Office of Dismantlement and Transparency. This project is in collaboration with Pacific Northwest National Laboratory.

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Authors and Affiliations

  1. Chemical Sciences Division, Lawrence Livermore National Laboratory, P.O. Box 808, L-231, Livermore, CA, 94551, USA

    Ruth S. Kips

  2. Chemical Sciences Division, Lawrence Livermore National Laboratory, P.O. Box 808, L-186, Livermore, CA, 94551, USA

    Michael J. Kristo

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  1. Ruth S. Kips
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  2. Michael J. Kristo
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Correspondence to Ruth S. Kips.

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Kips, R.S., Kristo, M.J. Investigation of chemical changes in uranium oxyfluoride particles using secondary ion mass spectrometry. J Radioanal Nucl Chem 282, 1031–1035 (2009). https://doi.org/10.1007/s10967-009-0304-3

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  • DOI: https://doi.org/10.1007/s10967-009-0304-3

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