The diffusive behavior of Cs was studied at 550 to 850C. The results could be described by:

D (cm2/s) = 2.3 x 10-1 exp[-0.57(eV)/kT]

H.M.Love, H.D.Wiederick: Canadian Journal of Physics, 1969, 47[6], 657-63

The best linear fits to the solute diffusion data ([5] to [25]) yield:

H (sd): Ln[Do] = 1.49E – 21 (R2 = 0.87); W(sd): Ln[Do] = 0.33E – 16.1 (R2 = 0.63)