Electronic and structural changes induced by the incorporation of aliovalent cation in UO2

Prieur, D.; Martin, P.; Bes, R.; Lebreton, F.; Caisso, M.; Delahaye, Th.; Strach, M.; Belin, R.; Martel, L.; Vigier, J.-F.; Prussmann, T.; Vitova, T.; Solari, P.; Kvashnina, K.; Scheinost, A. C.; Somers, J.

Electronic and structural changes induced by the incorporation of aliovalent cation in UO2

Prieur, D.; Martin, P.; Bes, R.; Lebreton, F.; Caisso, M.; Delahaye, T.; Strach, M.; Belin, R.; Martel, L.; Vigier, J.-F.; Prussmann, T.; Vitova, T.; Solari, P.; Kvashnina, K.; Scheinost, A. C.; Somers, J.

Abstract

The incorporation of aliovalent cations into the UO2 structure leads to a change of the U oxidation state and can ultimately affects the physical propertiesy of these U1-yMyO2±x compounds. U1-yLayO2±x, U1-yPuyO2±x and U1-yAmyO2±xhave been investigated in the present work, as these materials are particularly relevant for the nuclear fuel cycle. LIII XANES, LIII HERFD-XANES and MIV HERFD-XANES measurements have been performed to study both electronic and structural environments of these fluorite-type solid solutions.

Keywords: 4th generation nuclear fuel; transmutation; ROBL

Beteiligte Forschungsanlagen

Rossendorf Beamline an der ESRF DOI: 10.1107/S1600577520014265

Verknüpfte Publikationen

DOI: 10.1107/S1600577520014265 is cited by this (Id 21711) publication

Vortrag (Konferenzbeitrag)
XAFS16 - 16th International Conference on X-ray Absorption Fine Structure, 23.-28.08.2015, Karlsruhe, Germany

Permalink: https://www.hzdr.de/publications/Publ-21711