The self-diffusion of Li in molten samples was measured by using the capillary reservoir technique, with 6Li as a tracer. The concentration profiles of 6Li in a capillary were measured by means of ion micro mass analysis. The results could be described by:

D (cm2/s) = 9.27 x 10-3 exp[-7770/RT]

The activation energy for Li diffusion was much lower than that of F, and was slightly higher than that for electrical conductivity.

N.Iwamoto, Y.Tsunawaki, N.Umesaki, K.Furukawa, H.Ohno: Trans. JWRI, 1977, 6[1], 17-21