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

Andrew Nicholson; Stephen Croft; Robert D. McElroy

doi:10.1007/s10967-015-4543-1

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

Andrew Nicholson, Stephen Croft, Robert D. McElroy

Advanced Detection and Applied Data Scie

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

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.

Original language	English
Pages (from-to)	2069-2074
Number of pages	6
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume	307
Issue number	3
DOIs	https://doi.org/10.1007/s10967-015-4543-1
State	Published - Mar 1 2016

Keywords

Bootstrapping
Fluorescence yield
Hybrid K-edge densitometry
Uncertainty quantification

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10.1007/s10967-015-4543-1

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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, ωK, of uranium and plutonium. Limited experimental data for ωK(Z) as a function of atomic number, Z, exist and the data are subject to experimental uncertainty. Previous studies have provided values for ωK(Z) with uncertainty estimates but have not included covariance information. We use a phenomenological model with a bootstrapping method to generate the ratio ωK(94)/ωK(92) and associated uncertainty.",

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AU - Nicholson, Andrew

AU - Croft, Stephen

AU - McElroy, Robert D.

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AB - 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, ωK, of uranium and plutonium. Limited experimental data for ωK(Z) as a function of atomic number, Z, exist and the data are subject to experimental uncertainty. Previous studies have provided values for ωK(Z) with uncertainty estimates but have not included covariance information. We use a phenomenological model with a bootstrapping method to generate the ratio ωK(94)/ωK(92) and associated uncertainty.

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

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Keywords

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