Measurements were made of the diffusion of 82Br, at temperatures of between 600 and 675C, in pure single crystals. The diffusion parameters were determined, in the high-temperature region, from a least-squares straight-line Arrhenius plot. The results could be described by:

D (cm2/s) = 32 exp[-1.99(eV)/kT]

Ionic Conductivity and Self-Diffusion in Pure RbBr. H.L.Downing, R.J.Friauf: Physical Review B, 1975, 12[12], 5981-9