THE APPLICATION OF EXAFS SPECTROSCOPY TO THE STRUCTURAL DETERMINATION OF FLUORITE TYPE OXYGEN- EXCESS URANIUM OXIDES AND OF MIXED (U,Ce) OXIDES

On a utilisé l'EXAFS pour UO2, β-U3O7 (=UO2.33) et U4O9 (=UO2.25) au seuil de l'uranium, ainsi qu'aux seuils de l'uranium et du cérium pour la série (U1-y,Cey)O2-x, x=7,20,28% pour caractériser l'environnement autour de l'uranium et de cérium et de déterminer la répartition des défauts dans les phases nonstoechiométriques.EXAFS spectroscopy has been carried out at 77 K at the uranium LIII edge of UO2, β-U3O7 (=UO2.33) and U4O9 (=UO2.25), and at both the uranium and cerium edges in the series of mixed oxides (UyCe1-y)O2-x x=7,20,28%, with the aim of determining the structure of these highly defective phases

A model to describe the irradiation-induced imensional changes in polycrystalline graphites and carbons

SIGLELD:3106.076(CEGB-RD/B/N--4979) / BLDSC - British Library Document Supply CentreGBUnited Kingdo

The nature of the oxide formed on 20 per cent Cr/25 per cent Ni/Nb steel oxidised at 1123K in CO

SIGLELD:3106.076(CEGB-RD/B--5013N81). / BLDSC - British Library Document Supply CentreGBUnited Kingdo

The role of FexCr2-xO3 standard solid solutions in the identification of rhombohedral phase composition by XRD

SIGLEAvailable from British Library Document Supply Centre- DSC:7761.0385(RD/B--6040/R88) / BLDSC - British Library Document Supply CentreGBUnited Kingdo