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

RTNS-II 和 JMTR 辐照比较中损伤结构发展的裂变-聚变相关性

• 批准号: 04302063
• 负责人: KIRITANI Michio
• 金额: $ 8.9万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Co-operative Research (A)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-04302063/
• 关键词: Neutron Irradiation; Fusion Neutron; Fission Neutron; Reactor Irradiation; Fission-Fusion Correlation; Rediation Damage; Fusion Reactor Materials; Cascade Damage; 核分裂-格融合相関; 核融合炉; 核融合中性子照射; 照射相関; 電子照射; イオン照射; 核分裂一核融合相関

(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.

（1）完成了JMTR在所有要求温度下的温控辐照，并与RTNS-Ⅱ进行了直接比较。成功地进行了循环变温条件下的温度循环辐照和多段可移动式辐照装置的辐照。（2）利用高压电子显微镜观察了中子辐照产生的缺陷在电子辐照下的行为，确定了RTNS-Ⅱ、JMTR和LASREF产生的缺陷的性质。（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亚级联形成的计算，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）揭示了小间隙原子团易于一维运动的细节，解决了间隙原子团数量极少和位错结构晶体学取向各向异性等尚未解决的问题。（7）分析了级联局部化诱导的偏压效应，找出了材料之间的差异，并评估了级联局部化诱导的偏压效应对空洞膨胀的贡献。（8）综合考虑中子辐照和离子辐照的结果，给出了损伤结构模拟的总体框架。(9)An发现级联碰撞形成的点缺陷的蒸发在温度循环辐照损伤结构发展中起重要作用。

项目成果

Y.Shimomura: "Computer simulation of void formation in copper" Transaction of Material Research Society of Japan. 9. 122-128 (1992)

Y.Shimomura：“铜中空隙形成的计算机模拟”日本材料研究会汇刊。

Y.Satoh: "Binary collision calculation of subcascade structure and its correspondence to observed subcascade defects in 14 MeV neutron irradiated copper" Journal of Nuclear Materials. 191-194. 1101-1105 (1992)

Y.Satoh：“子级联结构的二元碰撞计算及其与 14 MeV 中子辐照铜中观察到的子级联缺陷的对应关系”核材料杂志。

K.Hamada: "Role of solute atoms on microstructural evolution in neutron irradiatted nickel" Journal of Nuclear Materials. 212-215. 270-274 (1994)

K.Hamada：“溶质原子对中子辐照镍微观结构演化的作用”核材料杂志。

H.Watanabe: "Defect formation in austenitic stainless steels during shutdown procedure of FFTF" Journal of Nuclear Materials. 217. 178-186 (1994)

H.Watanabe：“FFTF 关闭过程中奥氏体不锈钢中的缺陷形成”核材料杂志。

Y.Shimomura, R.Nishiguchi, T.Diaz de la Rubia and M.W.Guinan: "Structural relaxation of point defect cluster in pure Cu" Radiation Effects and Defects in Solids. 25. 81-89 (1993)

Y.Shimomura、R.Nishiguchi、T.Diaz de la Rubia 和 M.W.Guinan：“纯铜中点缺陷簇的结构弛豫”辐射效应和固体缺陷。