Comparison of tritium inventory in solid breeder blankets

It has been pointed out by the present authors that it is essential to understand such mass transfer steps as diffusion of tritium in the grain of a breeder material, absorption of water vapor into bulk of the grain, adsorption of water on surface of the grain, and exchange capacity of tritium to be trapped to surface of the grain together with two types of isotope exchange reactions for evaluation of the tritium inventory in a solid breeder blanket under various conditions or for estimation of the tritium release curve at the change of operational conditions of a blanket. The isotope exchange capacity on the Li4SiO4 surface is experimentally obtained in this study. Comparison of the tritium inventory in solid breeder blankets packed with Li2O, LiAlO2, Li2ZrO3, Li2TiO3 or Li4SiO4 is also performed using the calculation model previously presented by the present authors. (author)