Dislocation diffusion in plate samples was studied by using local electron beam heating. Dislocations were present in high densities. It was assumed that the effective dislocation radius was 10nm. It was found that, at 900 to 1200C, the results could be described by:

D (cm2/s) = 1.1 x 104 exp[-3.43(eV)/kT]

G.V.Dudko, M.AKolegaev, V.A.Panteleev: Fizika Tverdogo Tela, 1969, 11[5], 1356-9