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Microparticle production as reference materials for particle analysis methods in safeguards

Published online by Cambridge University Press:  08 February 2018

Stefan Neumeier*
Affiliation:
Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research – Nuclear Waste Management and Reactor Safety (IEK-6), 52425Jülich, Germany
Ronald Middendorp
Affiliation:
Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research – Nuclear Waste Management and Reactor Safety (IEK-6), 52425Jülich, Germany
Alexander Knott
Affiliation:
Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research – Nuclear Waste Management and Reactor Safety (IEK-6), 52425Jülich, Germany
Martin Dürr
Affiliation:
Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research – Nuclear Waste Management and Reactor Safety (IEK-6), 52425Jülich, Germany
Martina Klinkenberg
Affiliation:
Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research – Nuclear Waste Management and Reactor Safety (IEK-6), 52425Jülich, Germany
Fabien Pointurier
Affiliation:
CEA, DAM, DIF, F-91297 Arpajon, France
Dario Ferreira Sanchez
Affiliation:
Paul Scherrer Institute, 5232Villigen, Switzerland
Valerie-Ann Samson
Affiliation:
Paul Scherrer Institute, 5232Villigen, Switzerland
Daniel Grolimund
Affiliation:
Paul Scherrer Institute, 5232Villigen, Switzerland
Irmgard Niemeyer
Affiliation:
Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research – Nuclear Waste Management and Reactor Safety (IEK-6), 52425Jülich, Germany
Dirk Bosbach
Affiliation:
Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research – Nuclear Waste Management and Reactor Safety (IEK-6), 52425Jülich, Germany
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Abstract

The application of safeguards measures by the International Atomic Energy Agency (IAEA) involves analytical measurements of samples taken during inspections of nuclear facilities. Thus constant development and advancement of analytical techniques is required. For quality control purposes, the IAEA has implemented a dedicated project to enhance its analytical capabilities by producing tailor-made reference materials for the analysis of uranium isotope signatures in (single) particles.

To this end, a particle production set-up was developed and implemented at Forschungszentrum Juelich capable to produce uranium oxide microparticles which are intended to be used as (certified) reference materials for particle analysis methods. A step towards the certification process is the evaluation of consistency of the size distribution and homogeneity. A monodisperse particle size distribution as well as the single phase triuranium octoxide structure was confirmed using SEM, µ-XRD and µ-Raman spectroscopy, respectively. Analysis performed on single uranium oxide microparticles confirmed consistency of the uranium isotopic ratios in comparison to the initial precursor solutions. To improve the homogeneity and particle handling, the particles are transferred into suspensions, for which the stability was investigated with respect to dissolution.

Type
Articles
Copyright
Copyright © Materials Research Society 2018 

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Footnotes

a

Present address: European Commission, Joint Research Centre , 2440 Geel, Belgium

b

Present address: European Commission, Joint Research Centre Karlsruhe, 76344 Karlsruhe, Germany

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