Tracer diffusion coefficients for Li were determined by deposition of a thin source onto polished glass wafers, annealing at 300 to 900C and ion-microprobe determination of the concentration profile. The results conformed to an Arrhenius-type relationship:

D(cm2/s) = 0.03 exp[-22(kcal/mol)/RT]

A.Jambon, M.P.Semet: Earth and Planetary Science Letters, 1978, 37[3], 445-50