ICF装置靶场关键材料的辐照效应研究进展

Progress of research on irradiation effects in key materials in ICF facilities

从惯性约束聚变(ICF)装置中靶场关键材料易受辐照损伤、从而限制材料使用寿命和装置稳定运行的现实问题出发,总结归纳了有关不锈钢、铝合金、终端光学组件三大类靶场关键材料的辐照效应研究进展,详细介绍了靶室内高能中子束、γ射线、X射线等高能粒子和射线引起靶室第一壁材料出现烧蚀、中子活化等辐照损伤问题,以及靶室环境对关键材料的影响和防护处理。此外,还阐述了打靶试验中所产生的复杂辐射环境、基频与三倍频激光对靠近靶室的终端光学组件所产生的各类辐照损伤现象和相关作用机理。

The key materials near the target chamber suffer from radiation damage in the laser-driven inertialconfinement fusion(ICF)facility,which limits the lifetime of materials and stable operation of ICF facility.Thisreview summarizes the progress of research on irradiation effects of three major types of key materials in or nearest tothe target chamber:stainless steel,aluminum alloy,and final optics assembly.The ablation and neutron activation offirst-wall materials in the target chamber caused by neutron beam,γ-ray,X-ray and other high-energy particles areintroduced and the impact of the target chamber environment on the materials and corresponding protective strategyare analyzed in detail.In addition,various radiation damage phenomena and related damage mechanisms of the finaloptics assembly near the target chamber under 1ωlaser,3ωlaser,and the complex high-energy radiation environmentare also elaborated.Hopefully,this review can provide a reference for the construction and development of laser-driven ICF in China.