To efficiently capture the energy of the nuclear bond, advanced nuclear reactor concepts
seek solid fuels that must withstand unprecedented temperature and radiation extremes. In …

Predicting the nuclear fuel microstructure at each moment of its irradiation cycle (nominal,
power transient, accidental conditions) is a significant nuclear safety issue. For that, it is …

We performed positron annihilation spectroscopy measurements on uranium dioxide
irradiated with 45 MeV α particles. The positron lifetime was measured as a function of the …

Abstract During Pressurized Water Reactor operation, around 25% of the created Fission
Products (FP) are Xenon and Krypton. They have a low solubility in the nuclear fuel and can …

Already used as neutron absorber in the current French nuclear reactors, boron carbide (B 4
C) is also considered in the future Sodium Fast Reactors of the next generation (Gen IV) …

The interaction between fission gas Xe and grain boundaries (GBs) in polycrystalline UO 2
nuclear fuel is intricate at elevated temperatures. Herein, molecular dynamics simulations …

We experimentally studied the formation of vacancy clusters and oxygen related defects in
uranium oxide (UO x) thin films (< 70 nm) changing the stoichiometry in the x= 2.2–3.5 …

The behaviors of xenon in molybdenum were studied using molecular statics and molecular
dynamics simulations. The diffusion mechanism of xenon atoms was studied combining …

Transmission electron microscopy observation of Kr bubble evolution in polycrystalline UO 2
annealed at high temperature was conducted in order to understand the inert gas behavior …

Doppler broadening of annihilation gamma-line combined with a slow positron beam (SPB)
was used to measure the momentum density distribution of annihilating pairs in a set of …