The diffusive behavior of 14C in the α-phase was studied at 600 to 800C. The results could be described by:

D (cm2/s) = 3.51 x 10-5 exp[-30.7(kcal/mol)/RT]

A.I.Nakonechnikov, L.V.Pavlinov: Izvestiya Akademii Nauk SSSR, 1972, 2, 213