XPS analysis of UxCe1−xO2±δ and determination of oxygen to metal ratio

The chemical states of U and Ce in the solid solutions of UO2 and CeO2 are studied using the X-ray photoelectron spectroscopy. A detailed analyses on U 4f and Ce 3d photoelectron peaks revealed the presence of Ce3+ and U5+/U6+ states in the mixed oxides. The oxygen to metal ratios in different compositions of mixed oxides were estimated from the quantity of different chemical states of U and Ce present in mixed oxides.