Speaker
Dr
Stefan Neumeier
(Forschungszentrum Jülich GmbH)
Description
The application of safeguards measures by the International Atomic Energy Agency (IAEA) involves analytical measurements of samples taken during inspections and requires the development and advancement of analytical techniques. For quality control purposes, the IAEA has expressed the need to acquire reference materials for particle analysis methods applied in safeguards.
To this purpose, a particle production facility was implemented at Forschungszentrum Jülich, which is capable of producing microparticles intended as source material for certified reference materials for particle analysis methods applied in safeguards. A monodisperse particle size distribution as well as the single phase triuranium octoxide structure was confirmed using SEM and µ-XRD/XANES, respectively. Analysis performed on single uranium 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 and isotopic exchange.
Primary author
Dr
Stefan Neumeier
(Forschungszentrum Jülich GmbH)
Co-authors
Dr
Alexander Knott
(European Commission, Joint Research Centre Karlsruhe (JRC), 76344 Karlsruhe, Germany)
Dr
Daniel Grolimund
(Paul Scherrer Institute, 5232 Villigen, Switzerland)
Dr
Dario Ferreira Sanchez
(Paul Scherrer Institute, 5232 Villigen, Switzerland)
Prof.
Dirk Bosbach
(Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research – Nuclear Waste Management and Reactor Safety (IEK-6), 52428 Jülich, Germany)
Dr
Fabien Pointurier
(CEA, DAM, DIF, F-91297 Arpajon, France)
Dr
Irmgard Niemeyer
(Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research – Nuclear Waste Management and Reactor Safety (IEK-6), 52428 Jülich, Germany)
Dr
Martina Klinkenberg
(Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research – Nuclear Waste Management and Reactor Safety (IEK-6), 52428 Jülich, Germany)
Mr
Ronald Middendorp
(Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research – Nuclear Waste Management and Reactor Safety (IEK-6), 52428 Jülich, Germany)
Dr
Valerie-Ann Samson
(Paul Scherrer Institute, 5232 Villigen, Switzerland)
