A model for the density of liquid UO2

The thermophysical properties of uranium dioxide play an important role whe n discussing reactor safety issues. In the following paper data for the den sity of liquid UO2 are critically assessed and a new model is proposed. For two different temperature ranges, 3120 K less than or equal to T less than or equal to 4000 K and 4000 K less than or equal to T less than or equal t o 5000 K, approaches for the assessment of the density of liquid UO2 are pr esented and uncertainties are given.