The migration of Cl in undoped material under near-saturation Cd over-pressures or minimum total pressure conditions was measured at 520 to 800C by using radiotracer techniques. At a given temperature, it was found that there was no appreciable difference in the diffusivities under the differing Cd partial pressures. Under saturation conditions, the results could be described by:

D (cm2/s) = 7.1 x 10-2 exp[-1.60(eV)/kT]

It was concluded that Cl diffused via a mechanism which involved the neutral defect pair, (VCdVTe)x.

D.Shaw, E.Watson: Journal of Physics C, 1984, 17[28], 4945-50