Self-Diffusion in Solid Krypton

Tracer diffusion in solid krypton has been measured in the temperature range 90^∘<T<115^∘K by means of an isotopic exchange technique. The diffusion parameters obtained are in reasonable accord with values estimated from data for other rare-gas solids through the principle of corresponding states. The addition of a small amount of O₂ ({~}0.4%) appears to depress the diffusion of the krypton.