Dislocation diffusion in plate samples was studied by using local electron-beam heating. The dislocations were present in high densities. The diffusion process was monitored by using radioactive tracers and the p-n junction method, and it was assumed that the effective dislocation radius was equal to 10nm. It was found that, at 900 to 1200C, the results could be described by:

D (cm2/s) = 7.0 x 104 exp[-3.65(eV)/kT]

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