进气量对强流正离子源反向电子流的影响研究  

Effect of gas flow rate on back-streaming electron in the high current positive ion source for neutral beam injection

作　　者：吴铭钐 胡纯栋[1,2] 谢亚红 邑伟 许永建 梁立振[1,2] WU Ming-shan;HU Chun-dong;XIE Ya-hong;YI Wei;XU Yong-jian;LIANG Li-Zhen(Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031;University of Science and Technology of China,Hefei 230026)

机构地区：[1]中国科学院等离子体物理研究所,合肥230031 [2]中国科学技术大学,合肥230026

出　　处：《核聚变与等离子体物理》2021年第2期183-186,共4页Nuclear Fusion and Plasma Physics

基　　金：国家自然科学基金(11575240,11975261)。

摘　　要：分析了EAST-NBI离子源束引出过程中反向电子的产生及物理特性,对典型情况下的进气量对离子源的影响进行了计算和实验研究。实验结果发现,质子比受进气量影响较小,进气量与反向电子流呈明显正相关。The generation and behavior of the back-streaming electrons during the beam extraction process for EAST-NBI ion source are analyzed, and the influence of gas flow rate on ion source is calculated, and experimental research is carried out in typical cases. The experimental results indicate that gas flow rate has little effect on the proton ratio, and there is a positive correlation between gas flow rate and the flux of back-streaming electron.

关 键 词：强流离子源 反向电子流 进气量 

分 类 号：TL629.1[核科学技术—核技术及应用]