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K-shell fluorescence yields and their uncertainties for use in hybrid K-edge densitometry

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Abstract

Hybrid K-edge densitometry (HKED) is a non-destructive analytical assay technique used to provide rapid determination of actinide concentration in tank solutions. Of special interest for HKED is the estimation, along with associated uncertainties, of the ratio of the flouresence yeilds, ω K, of uranium and plutonium. Limited experimental data for ω K(Z) as a function of atomic number, Z, exist and the data are subject to experimental uncertainty. Previous studies have provided values for ω K(Z) with uncertainty estimates but have not included covariance information. We use a phenomenological model with a bootstrapping method to generate the ratio ω K(94)/ω K(92) and associated uncertainty.

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Acknowledgments

The authors would like to thank the United States Department of Energy National Nuclear Security Administration Office of Defense Nuclear Nonproliferation Research and Development for funding to support this work.

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Authors and Affiliations

  1. Oak Ridge National Laboratory, PO Box 2008, MS6166, Oak Ridge, TN, 37831, USA

    Andrew Nicholson, Stephen Croft & Robert D. McElroy Jr.

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  1. Andrew Nicholson
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  2. Stephen Croft
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  3. Robert D. McElroy Jr.
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Correspondence to Andrew Nicholson.

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Nicholson, A., Croft, S. & McElroy, R.D. K-shell fluorescence yields and their uncertainties for use in hybrid K-edge densitometry. J Radioanal Nucl Chem 307, 2069–2074 (2016). https://doi.org/10.1007/s10967-015-4543-1

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  • DOI: https://doi.org/10.1007/s10967-015-4543-1

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