The diffusive behavior of 186Re was studied at 2100 to 2400C. The results could be described by:

D (cm2/s) = 1.95 x 101 exp[-141(kcal/mol)/RT]

L.N.Larikov, V.M.Tyshkevich, L.F.Chorna: Ukrayinskyi Fizychnyi Zhurnal, 1967, 12[6], 983-7

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)