Chronopotentiometric measurements were used to study the diffusion of Pu3+ ions in eutectic melts. The diffusivity of Pu3+ (0.018 to 0.66mol/l) at 450C was equal to 1.05 x 10-5cm2/s. The activation energy, at temperatures ranging from 410 to 600C, was 8.9kcal/mol. Chronopotentiometry in Molten Chlorides. Application to the Study of the Electrochemical Properties of U and Pu in LiCl-KCl. A.Leseur: Commission d’Energie Atomique Report CEA-R-3793, 1969

Table 81

Diffusion of UO2Cl2 in Eutectic KCl-LiCl Melts