摘要
靶板的材料是当前聚变研究中的重要问题之一,偏滤器靶板材料的选择对偏滤器靶板寿命、杂质控制和等离子体参数的提升都有重要意义。在高参数等离子体条件下,会有巨大的粒子流和热流通过刮削层到达偏滤器靶板,进而引起靶板的溅射和侵蚀。因此不同材料的靶板在等离子体轰击下对边缘区域等离子体参数的影响也会不同。在本工作中,我们使用三维边缘输运程序EMC3-EIRENE研究了锂、硼、碳、钨四种不同的靶板材料下的电子密度、电子温度以及中性粒子密度的分布。结果发现钨靶板的下游电子密度明显低于其余3种靶板材料,而钨靶板的下游电子温度则较高。中平面附近的电子温度和密度分布也观察到了相似的规律。
The plasma-facing material is one of the most critical issues in fusion devices,which is important for the improvement of the life time of divertor targets,the control of impurities and the main plasma parameters.The high-energy plasma results in the high particle flux and heat flux deposition on the divertor target,leading to the erosion of target plates.Therefore,the materials of target plates have an effect on the edge plasma parameters.In this work,the distributions of electron density,electron temperature,and neutral particle density with different divertor materials(lithium,boron,carbon,and tungsten)are investigated with the help of the three-dimensional edge transport program EMC3-EIRENE.It is found that the downstream electron density with tungsten targets is significantly lower than that of the other three low-Z target materials,and the downstream electron temperature of the tungsten targets is higher.Similar distributions of the electron density and temperature are also observed in the mid-plane region.
作者
戴舒宇
潘奔
刘冰
DAI Shuyu;PAN Ben;LIU Bing(School of Physics,Dalian University of Technology,Dalian 116081,China)
出处
《南昌大学学报（理科版）》
CAS
北大核心
2021年第4期321-325,共5页
Journal of Nanchang University(Natural Science)
基金
国家磁约束计划发展专项基金(2018YFE0311100,2018YFE0303105)
国家自然科学基金面上项目(12075047)
中央高校基本科研专项基金(DUT21LK05)。
