Tritium diffusion in single crystals of rutile was measured between 155 and 300C. The diffusivities were calculated from concentration profiles obtained from microdensitometer traces of autoradiographs generated by the β-decay of the tritium. The diffusivity was anisotropic, and was described by:

c-axis:     D(cm2/s) = 7.5 x 10-6 exp[-9040/RT]

a-axis:     D(cm2/s) = 2.7 x 10-6 exp[-13100/RT]

G.R.Caskey: Materials Science and Engineering, 1974, 14[2], 109-14