Gaseous fission product generation, transport, and release can have a large impact on
nuclear fuel performance, degrading fuel and fuel–cladding gap properties. Over the past …

Gaseous fission product transport and release has a large impact on fuel performance,
degrading fuel and gap properties. While gaseous fission product behavior has been …

Under the anticipated operating conditions for demonstration magnetic fusion reactors
beyond ITER, structural and plasma-facing materials will be exposed to unprecedented …

An improved knowledge of nuclear fuel can be gained from a better description of atomic-
scale processes such as point defects behaviour under irradiation. In this perspective the …

Based on density functional theory (DFT) and empirical potential calculations, the diffusivity
of fission gas atoms (Xe) in UO 2 nuclear fuel has been calculated for a range of non …

Fuel performance codes are critical tools for the design, certification, and safety analysis of
nuclear reactors. However, their ability to predict fuel behavior under abnormal conditions is …

By means of an ab initio plane wave pseudopotential method, the behavior of helium in
UO2, PuO2, AmO2 and (Am0. 5Pu0. 5) O2 and of xenon in UO2 is studied. We first show that …

We performed a series of density functional theory+ U (DFT+ U) calculations to explore the
energetics of various defects in UO 2, ie, noble gases (He, Ne, Ar, Kr, Xe), Schottky defects …

Ab initio calculations based on the Density Functional Theory are carried out in order to
investigate the incorporation of iodine in uranium dioxide. The GGA+ U approximation is …

The stabilities of selected fission products—Xe, Cs, and Sr—are investigated as a function of
non-stoichiometry x in UO 2±x. In particular, density functional theory (DFT) is used to …