Abstract
An improved knowledge of nuclear fuel can be gained from a better description of atomic-scale processes such as point defects behaviour under irradiation. In this perspective the different techniques involving interatomic potentials can play a major role as they permit to simulate such mechanisms at the atomic scale. In this article we will assess the range of applicability of the available interatomic potentials for UO 2 by static calculations. Lattice properties have been envisaged, together with defect properties: the formation and activation energies of vacancies and interstitials, the binding energy of small clusters of these defects and the volume change associated with them.
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