The diffusion of 35S in single crystals was studied. The results could be described by:

D (cm2/s) = 2.17 x 10-5 exp[-69.8(kcal/mol)/RT]

V.P.Iovkov, A.S.Panov, A.V.Ryabenko: Fizika Metallov i Metallovedenie, 1972, 34[6], 1322-3

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)