Isotope decay methods were used to study the diffusion of 119Sn in polycrystalline Marz-grade material at 70 to 200C. The results could be described by:

δD (cm3/s) = 7.3 x 10-9 exp[-0.02(eV)/kT]

K.K.Kim, D.Gupta, P.S.Ho: Journal of Applied Physics, 1982, 53[5], 3620-3