Lithium-based tritium breeding materials will be adopted to produce tritium in the D-T fusion reactor. Li₂TiO₃ and Li₄SiO₄ pebbles have been proposed as candidates in water-cooled ceramic breeder blanket (WCCB) and helium-cooled ceramic breeder blanket (HCCB) respectively. Biphasic ceramics of core–shell Li₂TiO₃-Li₄SiO₄ have been considered as advanced breeding materials due to combining the superiority of Li₂TiO₃ and Li₄SiO₄. The defects will be introduced into tritium breeders in the operation of fusion reactor. They have important effects on tritium release. It is necessary to carry out the experiment on irradiation defects evolution. The annihilation kinetics of defects induced by γ-ray irradiation were investigated. Fluka and Flair were used to calculate the DPA (displacement per atom) of these irradiated pebbles. EPR (Electron Paramagnetic Resonance) characterization and EasySpin simulation were adopted to analyze the evolution and annihilation kinetics processes of irradiation defects. The concentration of defects decreased as the annealing temperature increased. There were still a certain amount of defects in Li₄SiO₄ and Li₂TiO₃-Li₄SiO₄ when the defects in Li₂TiO₃ disappeared by annealing. Li₂TiO₃ pebbles have a better irradiation stability than that of Li₄SiO₄ pebbles. According to the results of EasySpin simulation, the defect concentration of E’-center and O-related was obtained respectively. The kinetics parameters for the defects of E’-center and O-related center in Li₂TiO₃ and Li₄SiO₄ were acquired. The evolution behavior of Ti³⁺ in core–shell Li₂TiO₃-Li₄SiO₄ contributes to the recovery of defects. The correlation between annihilation of irradiation defects and tritium release was discussed. The anti-irradiation damage stability of three kinds of ceramic breeders were evaluated. This work carries out the research on the defect kinetics of the new core–shell structure tritium breeder. Meanwhile, a comprehensive comparison of the annihilation properties of three promising breeders has been made. Li₂TiO₃ pebbles present excellent tritium release performance due to higher annihilation rate constant. Compared the performances of these breeder pebbles, Li₂TiO₃ plays a positive role in irradiation tolerance and tritium release performance, and Li₄SiO₄ has higher lithium density which benefit for tritium production.

DT聚变反应堆将采用锂基tri繁殖材料生产to。已经提出将Li ₂ TiO ₃和Li ₄ SiO ₄卵石分别用作水冷陶瓷育种毯（WCCB）和氦冷陶瓷育种毯（HCCB）的候选材料。由于结合了Li ₂ TiO ₃和Li ₄ SiO ₄的优势，核壳型Li ₂ TiO ₃ -Li ₄ SiO _4的双相陶瓷被认为是先进的育种材料。。这些缺陷将在聚变反应堆的运行中引入into育种者。它们对tri的释放具有重要影响。有必要进行辐照缺陷演变的实验。研究了由γ射线辐照引起的缺陷的an没动力学。Fluka和Flair用于计算这些辐照卵石的DPA（每个原子的位移）。采用EPR（电子顺磁共振）表征和EasySpin仿真来分析辐照缺陷的演变和an灭动力学过程。缺陷浓度随着退火温度的升高而降低。Li ₄ SiO ₄和Li ₂ TiO ₃ -Li ₄中仍然存在一定数量的缺陷。通过退火使Li ₂ TiO _3中的缺陷消失时的SiO ₄。Li ₂ TiO ₃小卵石具有比Li ₄ SiO ₄小卵石更好的辐照稳定性。根据EasySpin仿真的结果，分别获得了E'-中心和O-相关的缺陷浓度。获得了Li ₂ TiO ₃和Li ₄ SiO ₄中E'中心和O相关中心缺陷的动力学参数。Ti ³⁺在核-壳Li ₂ TiO ₃ -Li ₄ SiO _4中的析出行为有助于缺陷的恢复。讨论了辐射缺陷的an灭与tri释放的关系。评价了三种陶瓷育种者的抗辐照损伤稳定性。这项工作对新型核壳结构tri育种师的缺陷动力学进行了研究。同时，对三个有前途的种鸽的the灭特性进行了综合比较。由于较高的an灭速率常数，Li ₂ TiO ₃卵石具有出色的tri释放性能。比较这些种鹅卵石的性能，Li ₂ TiO ₃在辐射耐受性和tri释放性能中起积极作用，而Li ₄ SiO ₄ 具有较高的锂密度，这有利于production的生产。