NDLI: Environmental monitoring for safeguards using k0-standardised Neutron Activation Analysis

Content Provider	IEEE Xplore Digital Library
Author	Vermaercke, P. Arboccò, F.F. Sneyers, L. Leal, A. Bruggeman, M.
Copyright Year	2009
Description	Author affiliation: CDTN/CNEN, Laboratory for Neutron Activation Analysis, Caixa Postal 941, CEP 30123-970, Belo Horizonte, Minas Gerais, Brazil (Leal, A.) \|\| Belgian Nuclear Research Centre SCK·CEN, Boeretang 200, B-2400, Mol, Belgium (Vermaercke, P.; Arboccò, F.F.; Sneyers, L.; Bruggeman, M.)
Abstract	Multi-elemental analysis of samples containing uranium by Instrumental Neutron Activation Analysis (INAA) has been generally known as a problematic task due to the numerous radioisotopes produced from the uranium fission when the sample is irradiated with thermal neutrons. In k0-standardised NAA (k0-NAA)it is possible to correct for this effect through the introduction of k0-fission factors. In this work the aim was to determine the feasibility of k0-NAA as a screening technique for accurate U and $n(^{235}U)/n(^{238}U)$ isotopic ratio determination (we further refer to the technique as k0-UNAA) and where k0-UNAA could be positioned versus the other screening techniques. In k0-UNAA we use an adapted k0 formalism to determine the $n(^{235}U)/n(^{238}U)-ratio.$ Several swipe samples spiked with different isotopic ratio's U were analysed and demonstrate the feasibility of k0-UNAA as a accurate and reliable screening method for the quantification of environmental samples up to several tens of ng. At these levels the uranium concentration can be quantified with a reasonable uncertainty and reliable $n(^{235}U)/n(^{238}U)$ isotopic ratio analysis could also be performed.
Starting Page	1
Ending Page	5
File Size	364817
Page Count	5
File Format	PDF
ISBN	9781424452071
DOI	10.1109/ANIMMA.2009.5503700
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-07
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Spectroscopy Environmental Monitoring Instruments X-ray detection Neutrons Fluorescence Contamination K0-standardisation Neutron Activation Analysis Uranium Illicit Trafficking Safeguards Pollution measurement Isotopes Monitoring Activation analysis
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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