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Experimental study on plasma characteristics in the extraction region of a high-power RF negative ion source based on electrostatic probe

文献类型：期刊论文

作者Peng, Xufeng1,2; Xu, Yongjian1,2; Xie, Yahong1,2; Wei, Jianglong1,2; Li, Yufan2; Yang, Yuwen1,2; Liu, Bo1,2; Xie, Junwei1,2; Wu, Bin1,2
刊名PLASMA PHYSICS AND CONTROLLED FUSION
出版日期2024-10-01
卷号66
关键词RF negative ion source the extraction region electrostatic probe plasma parameters
ISSN号0741-3335
DOI10.1088/1361-6587/ad705b
通讯作者Xu, Yongjian(yjxu@ipp.ac.cn) ; Wu, Bin(wubin@ipp.ac.cn)
英文摘要The plasma characteristics of the extraction region in high-power RF negative ion source have a significant impact on the production and extraction of negative hydrogen ions. This study utilized electrostatic probe to investigate the effect of RF power, source pressure, magnetic filter field and bias voltage on the plasma parameters of the extraction region (without cesium), and also studied the variation of plasma parameters with position and time. The results indicate that as RF power increases, the plasma density in the extraction region significantly rises, but it also leads to an increase in the electron temperature ( Te) of the extraction region (which increases the loss of negative hydrogen ions); increasing the source pressure can effectively increase the electron density ( Ne) in the extraction region and reduce Te as expected; increasing the magnetic filter field can effectively reduce the Te in the extraction region, but after the plasma grid current exceeds 1900 A, the change in Te is not significant; although increasement of the bias voltage can effectively suppress the Ne in the extraction region, it causes Te to rise; moreover, the distribution of plasma parameters in the extraction region is relatively uniform; in addition, the variation of plasma parameters with time is not obvious. These findings not only deepen the understanding of the physical mechanisms of plasma behavior in the extraction region of negative ion sources, but also provide important theoretical and experimental bases for the optimization of high-power RF negative ion sources.
WOS关键词HYDROGEN
资助项目Comprehensive Research Facility for Fusion Technology Program of China ; National Natural Science Foundation of China[11975262] ; [2018-000052-73-01-001228]
WOS研究方向Physics
语种英语
WOS记录号WOS:001304242200001
出版者IOP Publishing Ltd
资助机构Comprehensive Research Facility for Fusion Technology Program of China ; National Natural Science Foundation of China
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/134990]  
专题中国科学院合肥物质科学研究院
通讯作者Xu, Yongjian; Wu, Bin
作者单位1.Univ Sci & Technol China, Hefei 230026, Peoples R China
2.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Peng, Xufeng,Xu, Yongjian,Xie, Yahong,et al. Experimental study on plasma characteristics in the extraction region of a high-power RF negative ion source based on electrostatic probe[J]. PLASMA PHYSICS AND CONTROLLED FUSION,2024,66.
APA Peng, Xufeng.,Xu, Yongjian.,Xie, Yahong.,Wei, Jianglong.,Li, Yufan.,...&Wu, Bin.(2024).Experimental study on plasma characteristics in the extraction region of a high-power RF negative ion source based on electrostatic probe.PLASMA PHYSICS AND CONTROLLED FUSION,66.
MLA Peng, Xufeng,et al."Experimental study on plasma characteristics in the extraction region of a high-power RF negative ion source based on electrostatic probe".PLASMA PHYSICS AND CONTROLLED FUSION 66(2024).

入库方式： OAI收割

来源：合肥物质科学研究院

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