The diffusion of 123Te was measured in monocrystalline samples over a temperature span of some 700K. The results were described by:

D (cm2/s) = 2.6 x 100 exp[-60.5(kcal/mol)/RT]

P.Neuhaus, C.Herzig: Zeitschrift für Metallkunde, 1989, 80[4], 220-6