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Information × Registration Number 0309U007090, 0108U002289 , R & D reports Title Development of a mathematical model and its implementation in computer code for calculation of thermophysical properties of the radiation damaged oxide fuels popup.stage_title Розробка математичної моделі і її реалізація в комп'ютерному коді для розрахунку теплофізичних властивостей радіаційно-пошкоджених оксидних палив Head E.S.Yakub, Registration Date 17-02-2009 Organization Odessa state economic university popup.description2 Final report includes an overview of the research performed at all preceding stages of the project and new results obtained at the last stage (3B) "Calculation of diffusion coefficients of oxygen and helium in UO2+x" as foreseen in the Technical Annex. This report extends five earlier interim reports. New molecular dynamics (MD) simulation results on diffusion coefficients of helium and oxygen in non-stoichiometric uranium dioxide are reported, effects of UO2 lattice contraction due to non-stoichiometry effects and swelling due to presence of He atoms are determined, behaviour if He atoms in small bubbles and high-temperature solubility of helium in UO2+x assessed and discussed. Appendices include the source code of the final version of the molecular dynamics simulation program, developed and applied in simulation of pure and radiation damaged UO2 and UO2+x. Product Description popup.authors popup.nrat_date 2020-04-02 Close