Fission-Fusion Correlation of Damage Structure Development form the Comparison of Irradiations with RTNS-II and JMTR

(1)完成了JMTR在所有所需温度下的温控照射，并可以与RTNS-II进行直接比较。成功地进行了周期性温度变化下的温度循环照射和多节段可拆卸装置的照射。(2)用高压电子显微镜观察了中子辐照缺陷在电子辐照下的行为，确定了RTNS-II、JMTR和LASREF所引入的缺陷的性质。(3)通过对大级联碰撞的模拟，了解了损伤缺陷结构随材料和温度的变化规律。(4)对D-T聚变中子辐照PKA能谱的所有能区进行了子级联计算，并成功地重建了RTNS-II的计算结果。(5)证实了点缺陷的时空随机反应在级联损伤结构形成中的重要作用。(6)揭示了小间隙团簇容易一维运动的细节，解决了间隙团簇数目极少和位错结构的晶体取向各向异性的悬而未决问题。(7)对级联局域化偏置效应进行了分析，找出了材料间的差异，评价了材料对孔洞膨胀的贡献。(8)包括中子和离子辐照的所有结果，揭示了损伤结构计算的总体框架。(9)在温度循环辐照过程中，级联碰撞形成的点缺陷的蒸发对损伤结构的发展起着至关重要的作用。

(1)Temperature controlled irradiations with JMTR at all the required temperatures were finished, and the direct comparison with RTNS-II became possible. Temperature cycle irradiation under cyclic temperature variation and irradiatoin with multi-section removable rig were successfully performed. (2)From the behavior of neutron-radiation-induced defects under electron irradiation with a high voltage electron microscope, the nature of all the defects intronduced with RTNS-II,JMTR and LASREF were indentified. (3)Simulations of large cascade collisions lead to the understanding of the variation of damage defect structures with materials and temperature. (4)Calculations of subcascade formation were done for all the energy range of PKA energy spectrum for D-T fusion neutron irradiaton, and the result from RTNS-II was successfully reconstructed. (5)The important role of space-and time-wise random reaction of point defects in the cascade damage structure formation was confirmed. (6)Details of the easy one-dimensional motion of small interstitial clusters were disclosed, and the unsolved problems of very few number of interstitial clusters and crystallographic orientation anisotropy of dislocation structures were solved. (7)Cascade-localization-induced-bias effect was analyzed to find the difference between materails and to evaluate the contribution to void swelling. (8)Including all the results from neutron and ion irradiations, the total framework of damage structure accmulation was disclosed. (9)An essential role of the evaporation of point defects formed from cascade collisions was found in the damge structure development during temperature cycle irradiation.