Effect of lanthanide fission product concentrations on the mechanical properties of UO2: A first principle based study

Understanding xenon and vacancy behavior in UO2, UN and U3Si2: a comparative DFT+Ustudy

“…The production of a Xe-vacancy cluster is an endothermic process in both UO 2 and UN host crystals, 31,32 and thus, there is a finite solubility of Xe in their matrices. In contrast to UO 2 25,27,[33][34][35][36][37][38] and UN, 31,[39][40][41] very few studies 21,[42][43][44][45][46][47][48][49][50][51][52] have focused on the thermodynamic behavior of point defects and impurity Xe in U 3 Si 2 .…”

On membrane-based approaches for rare earths separation and extraction – Recent developments

“…In the periodic table, the 4f elements, according to IUPAC [100], are called the lanthanoids (previously and still frequently the 'lanthanides') or "rare earth elements". Although "the rare earth elements" is a broadly used terminology, they are not particularly rare, except for promethium, which has no stable isotope (product of natural nuclear fission in uranium ore [69,[101][102][103]). Generally, together with lanthanides, the yttrium (Y) and scandium (Sc) are considered rare earth elements owing to their chemical similarities.…”