Effect of Interstitial Point Defect on Thermal Transport in Uranium Dioxide and Plutonium Dioxide

摘要

Oxygen interstitials are major byproducts of nuclear fuel cycle; since oxygen interstitial has a negative formation energy, oxide fuels can be oxidized easily and become hyper -stoichiometric. Therefore, it is critical to analyze their effect on the thermal behavior of U02-based fuels to understand radiation damage and non-stoichiometry. Here, we provide a molecular dynamics study on the thermal transport of oxide fuels with oxygen interstitials.