JRP CALL information
Supported By

European Commission

Short description of the work
X-ray absorption spectroscopy (XAS) measurements have been performed on ground microspheres, consisting of Nd(y)U(1-y)O(2) with variable neodymium contents, at the Rossendorf Beamline (HZDR-ROBL) beamline (ESRF, Grenoble, France) to investigate solid solution characteristics.
Spherical particles with a diameter of about 1000 µm were prepared by the sol-gel method via internal gelation at Forschungszentrum Jülich GmbH (FZJ). The spherical shape was proven by scanning electron microscopy (SEM). Furthermore, the chemical composition, morphology and homogeneity was studied by SEM coupled with an energy dispersive X-ray spectroscope (EDX), cross checks were performed with dissolved particles in an inductively coupled plasma - mass spectrometer (ICP-MS) system at FZJ.
Long range order characterization was performed by applying X-ray powder technique. Single phase material was identified, the results were confirmed by the XAS investigations at the associated pooled facility. Further data analyses will be performed to determine the Nd-O and U-O bond length, as well as the oxidation state of uranium and the oxygen to metal ratio.

Main visitor contact data
Name: Christian Schreinemachers
Organisation: Forschungszentrum Jülich GmbH

JRP Identification
JRP nr: TALI-C06-10
JRP title: Investigation of solid state characteristics in the UO2 - Nd2O3 solid solution system.
JRP scope: Scope 3: Actinide materials

Visited Associated Pooled Facility
Visited APF during the stay: HZDR - ROBL
Name of the APF Contact Person: Andreas C. Scheinost

Other APF and organisation involved in the JRP
Other organisations involved:
Other APF involved in the project:

Description of the work done at the associated pooled facility
Start date of the stay: 12/2/2015
End date of the stay: 12/6/2015
Quantity of access: 3
Access Unit: Days
Misc.: Work during week-ends