In-pile tritium release from LiAlO₂, Li₂SiO₃ and Li₂O in exotic experiments 1 and 2

Within the European Fusion Technology Programme on Blanket Technology the experimental programme, EXOTIC, has been initiated and is being carried out as a joint project by SNL-Springfields, SCK/CEN-Mol and ECN-Petten in cooperation with the JRC-Petten. The programme consists of manufacture, characterization, irradiation and pre- and post-irradiation examination of the Li-compounds LiAlO₂, Li₂SiO₃, Li₂0, Li₂ZrO₃ and Li₈ZrO₆. The irradiations are carried out in the High Flux Reactor (HFR) at Petten. The first irradiation has been performed with four vented and four closed capsules containing LiAlO₂ and Li₂SiO₃ with various ⁶Li contents and grain sizes. The temperatures were approximately 400 and 600°C. The duration of this irradiation was 25 FPD. In the second irradiation three capsules contained Li₂SiO₃, one LiAlO₂ and four were filled with Li₂0. This experiment lasted two reactor cycles (50 FPD). In this paper results on tritium release of the first and second experiment will be given as well as data on material fabrication and material properties.