Oxidation behaviour of thorium-uranium mixed oxides in controlled oxidation experiments

M. Saoudi, J.R. Hayes, J. Lang,A.P. Grosvenor, T. Do, J. Mouris

Journal of Nuclear Materials（2022）

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摘要

•U L3-edge EXAFS from the as-fabricated (U, Th)O2 supports the ideality of the solid solutions.•Oxidation of U4+ in (U, Th)O2 materials occurred in the bulk samples as well as at the surface.•Rietveld refinement of neutron diffraction data revealed that the oxidized (Th,U)O2 materials with high UO2 content were biphasic.

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关键词

Thorium–uranium mixed oxides,X-ray absorption spectroscopy,Neutron powder diffraction,Advanced fuel

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