Thermal release behavior of tritium produced in neutron-irradiated crystals was studied. All of the tritium produced in γ-LiAlO2 was released upon heating to 1170K in vacuum. The predominant tritium species released was tritiated water. The release rate was controlled by the diffusion of tritium and the diffusion at 630 to 930K was described by:

D(cm2/s) = 2.1 x 10-5 exp[-90.3(kJ/mol)/RT]

K.Okuno, H.Kudo: Journal of Nuclear Materials, 1986, 138[2-3], 210-4