An investigation was made of the release of 133Xe and 133mXe, from neutron-irradiated single crystals, as a function of temperature and neutron dose. The Xe release could be expressed in terms of volume diffusion. The results, for 450 to 600C and a neutron dose of 3.5 x 1016/cm2, could be described by:

D (cm2/s) = 102 exp[-2(eV)/kT]

Diffusion of Xenon in Cs-Halides Irradiated with Neutrons. F.W.Felix, K.Meier: Zeitschrift für Naturforschung, 1967, 22a[12], 2075-7