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Highly resolved synchrotron-based investigations related to nuclear waste disposal

Published online by Cambridge University Press:  13 June 2012

Melissa A. Denecke
Affiliation:
Karlsruhe Institute of Technology, Institut für Nukleare Entsorgung, Postfach 3640, D-76021 Karlsruhe, Germany
Manuela Borchert
Affiliation:
Deutsches Elektronen-Synchrotron (DESY), Notkestr. 85, D-22607 Hamburg, Germany
Robert G. Denning
Affiliation:
University of Oxford, Magdalen College, High Street, OX1 4AU, United Kingdom
Wout de Nolf
Affiliation:
Department of Chemistry, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
Gerald Falkenberg
Affiliation:
Deutsches Elektronen-Synchrotron (DESY), Notkestr. 85, D-22607 Hamburg, Germany
Susanne Hönig
Affiliation:
Technische Universität Dresden, Institut für Strukturphysik, D-01062 Dresden, Germany
Martina Klinkenberg
Affiliation:
Forschungszentrum Jülich, Institut für Energie- und Klimaforschung (IEK-6), Nukleare Entsorgung und Reaktorsicherheit, D-52425 Jülich, Germany
Kristina Kvashnina
Affiliation:
European Synchrotron Radiation Facility (ESRF), Grenoble, 38043, France
Stefan Neumeier
Affiliation:
Forschungszentrum Jülich, Institut für Energie- und Klimaforschung (IEK-6), Nukleare Entsorgung und Reaktorsicherheit, D-52425 Jülich, Germany
Jens Patommel
Affiliation:
Technische Universität Dresden, Institut für Strukturphysik, D-01062 Dresden, Germany
Tobias Petersmann
Affiliation:
European Joint Research Center, Institute for Transuranium Elements (ITU), D-76344 Eggenstein-Leopoldshafen, Germany
Tim Pruessmann
Affiliation:
Karlsruhe Institute of Technology, Institut für Nukleare Entsorgung, Postfach 3640, D-76021 Karlsruhe, Germany
Stephan Ritter
Affiliation:
Technische Universität Dresden, Institut für Strukturphysik, D-01062 Dresden, Germany
Christian G. Schroer
Affiliation:
Technische Universität Dresden, Institut für Strukturphysik, D-01062 Dresden, Germany
Sandra Stephan
Affiliation:
Technische Universität Dresden, Institut für Strukturphysik, D-01062 Dresden, Germany
Julie Villanova
Affiliation:
European Synchrotron Radiation Facility (ESRF), Grenoble, 38043, France
Tonya Vitova
Affiliation:
Karlsruhe Institute of Technology, Institut für Nukleare Entsorgung, Postfach 3640, D-76021 Karlsruhe, Germany
Gerd Wellenreuther
Affiliation:
Deutsches Elektronen-Synchrotron (DESY), Notkestr. 85, D-22607 Hamburg, Germany
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Abstract

Synchrotron-based X-ray techniques are used increasingly to characterize actinide element speciation in heterogeneous media related to nuclear waste disposal safety. Especially techniques offering added temporal, spatial and energy resolved information are advancing our understanding of f-element physics and chemistry in general and of actinide element waste disposal in particular. Examples of investigations of uranium containing systems using both highly (energy) resolved X-ray emission spectroscopy (HRXES) techniques and spatially resolved techniques with focused X-ray beams are presented in this paper: polarization dependent partial fluorescence yield X-ray absorption near edge structure (PD-PFY-XANES) spectroscopic studies of a single Cs2UO2Cl4 crystal, which experimentally reveal a splitting of the σ, π, and δ components of the 6d valence states [1], and characterization of UO2/Mo thin films prepared on different substrates using a combination of techniques (2D and 3D micro- and nano-X-ray fluorescence, XANES and both holographic and ptychographic tomography).

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Copyright
Copyright © Materials Research Society 2012

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