Recently, novel container-less laser heating experimental data have been published on the
melting behaviour of pure PuO 2 and PuO 2-rich compositions in the uranium dioxide …

Materials in a nuclear environment are exposed to extreme conditions of radiation,
temperature and/or corrosion, and in many cases the combination of these makes the …

We review the state of modeling and simulation of nuclear fuels with emphasis on the most
widely used nuclear fuel, UO2. The hierarchical scheme presented represents a science …

The high-temperature phase diagram of the UO 2–ThO 2 system has been experimentally
revisited in the present study for the first time since 1970, using a laser heating approach …

The measurement of oxygen potential was conducted at 1673, 1773, and 1873 K for (U
0.623 Pu 0.350 Am 0.027) O 2 and at 1873 and 1923 K for (U 0.553 Pu 0.285 Am 0.015 Np …

The present work highlights the importance, in nuclear fuel safety and performance, of the
very high oxygen potentials of actinide oxides (ThO2, UO2, NpO2, PuO2) at temperatures …

In this work, a thermodynamic treatment for (Th, U) O 2 and (Th, Pu) O 2 fuels has been
developed using the CALPHAD method to describe phase diagram and thermodynamic …

A laser heating approach combined with fast pyrometry in a thermal arrest method was used
to provide new data for the melting/solidification phase transition in mixed (PuO 2+ ThO 2) at …

A thermochemical model of defects formation is proposed. Using this model, defect species
concentrations are determined. The model allows for the calculation of the non-stoichiometry …

This work revisits the melting behaviour of neptunium dioxide, an actinide compound which
can be produced in the nuclear fuel during operation, and which has an important impact on …