In a private comrnunicationl, wc reported the results of nondestructive and destructive examination of the SUPERFACT 1 experiment carried out by both the TransUranium Institut (TUI) and the french Commissariats i l’Energie Atomique (CEA). This experiment aimed to study, the bchaviour of IiseIs made up with Neptunium or Americium (from 2 Weight’% up to 45 wtYo part of heavy atoms) under irradiat...

The application of quantum chemistry to systems containing atoms of the lanthanide (57La 71Lu) and/or actinide (90Th 103Lr) series is a considerable challenge and has been attempted only by a comparatively small number of researchers. Several complications, some of which will be described in the following, prevent standard quantum chemical approaches from being successful in this field in all r...

Actinide metal centers are of fundamental interest as they have electronic structures that are distinct from those of transition metals and lanthanides. Indeed, the combination of increased spin–orbit coupling relative to transition metals and enhanced ligand field effects relative to lanthanides renders modeling the magnetic behavior of actinide-containing molecules particularly challenging. S...

A regular pattern, revealing the leading role of light-fragment nuclear charge, is found to emerge from a consistent analysis experimental information collected recently on low-energy asymmetric fission neutron-deficient nuclei around lead. The observation corroborated by theoretical investigation within microscopic framework, suggesting importance proton configurations driven quadrupole-octupo...

A systematic computational approach to An(III) hydration on a density-functional level of theory, using quasi-relativistic 5f-in-core pseudopotentials and valence-only basis sets for the An(III) subsystems, is presented. Molecular structures, binding energies, hydration energies, and Gibbs free energies of hydration have been calculated for [An(III)(OH(2))(h)](3+) (h = 7, 8, 9) and [An(III)(OH(...