An investigation was made of the diffusion of T in p-type material by charging specimens with the gas and measuring the release which occurred at lower temperatures in a gas ionization chamber. It was found that, between 400 and 500C, the T diffusivity could be described by:

D(cm2/s) = 4.2 x 10-15exp[-0.57(eV)/kT]

T.Ichimiya, A.Furuichi: International Journal of Applied Radiation and Isotopes, 1968, 19[7], 573-8