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 temperatures ranging from 260 to 580C and a neutron dose of 5.8 x 1016/cm2, could be described by:

D (cm2/s) = 102 exp[-1.45(eV)/kT]

Increasing the neutron dose resulted in a decrease in the diffusion coefficient.

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

Figure 4

Diffusion of Na in the AgBr-NaBr System