The near-surface and bulk diffusion of 63Ni was measured after irradiation with 2MeV electrons. The irradiation-enhanced bulk diffusivity, at 550 to 800K, was described by:

D (cm2/s) = 1.34 x 10-12 exp[-0.41(eV)/kT]

after a flux of 20μA/cm2.

W.Schüle, H.Kornmann: Radiation Effects, 1980, 49[4], 213-24