The diffusion of N was studied at 280C. The results could be described by:

D (cm2/s) = 7.2 x 10-3 exp[-34.8(kcal/mol)/RT]

R.W.Powers, M.V.Doyle: Journal of Applied Physics, 1959, 30, 514

The best linear fits to the solute diffusion data ([1015] to [1019], [1021] to [1030]) yield:

H: Ln[Do] = 0.55E – 9.4 (R2 = 0.92); N: Ln[Do] = 0.23E – 12.2 (R2 = 0.73);

Nb: Ln[Do] = 0.20E – 19.4 (R2 = 0.94)