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Direct measurement of ion and electron flux ratio at their respective sheath-edges and absence of the electron Bohm criterion effects

文献类型：期刊论文

作者Jin, Chenyao1,2; Yip, Chi-Shung2; Zhang, Wei2; Jiang, Di2; Xu, Guo-Sheng2
刊名PLASMA SOURCES SCIENCE & TECHNOLOGY
出版日期2022-11-01
卷号31
关键词sheath presheath electron sheath ion electron loss balance
ISSN号0963-0252
DOI10.1088/1361-6595/ac9b8d
通讯作者Jin, Chenyao() ; Yip, Chi-Shung(csyip@ipp.ac.cn) ; Zhang, Wei(zhangwei@ipp.ac.cn)
英文摘要A recent theory suggests that electrons enter electron sheaths at an electron Bohm velocity given by (T (e)/m (e))(1/2) instead of the electron thermal velocity as conventionally assumed. To test this theory, the flux density ratio Gamma(e,se)/Gamma(i,se) of electrons and ions entering their respective sheaths was directly measured via an almost continuous A (i)/A (e) area ratio scanning. The measured value agrees with the predictions assuming electrons entering the electron sheaths at their thermal velocity. The predictions associated with the electron Bohm criterion have not been found. If the predictions of such theories are true, the electron or ion presheath density drops will be very different from conventionally expected values.
WOS关键词RF DISCHARGE ; PLASMA ; BOUNDARY ; TRANSITION ; PRESHEATH ; VALIDITY ; ENERGY ; RANGE
资助项目Chinese Academy of Science Hundred Youth Talent Program ; National Natural Science Foundation of China[11875285] ; China Postdoctoral Science Foundation[2022M713188] ; Hefei Institutes of Physical Science, Chinese Academy of Sciences[YZJJ2022QN19]
WOS研究方向Physics
语种英语
WOS记录号WOS:000882166400001
出版者IOP Publishing Ltd
资助机构Chinese Academy of Science Hundred Youth Talent Program ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Hefei Institutes of Physical Science, Chinese Academy of Sciences
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/130361]  
专题中国科学院合肥物质科学研究院
通讯作者Jin, Chenyao; Yip, Chi-Shung; Zhang, Wei
作者单位1.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
2.Chinese Acad Sci, Inst Plasma Phys, Hefei Inst Phys Sci, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Jin, Chenyao,Yip, Chi-Shung,Zhang, Wei,et al. Direct measurement of ion and electron flux ratio at their respective sheath-edges and absence of the electron Bohm criterion effects[J]. PLASMA SOURCES SCIENCE & TECHNOLOGY,2022,31.
APA Jin, Chenyao,Yip, Chi-Shung,Zhang, Wei,Jiang, Di,&Xu, Guo-Sheng.(2022).Direct measurement of ion and electron flux ratio at their respective sheath-edges and absence of the electron Bohm criterion effects.PLASMA SOURCES SCIENCE & TECHNOLOGY,31.
MLA Jin, Chenyao,et al."Direct measurement of ion and electron flux ratio at their respective sheath-edges and absence of the electron Bohm criterion effects".PLASMA SOURCES SCIENCE & TECHNOLOGY 31(2022).

入库方式： OAI收割

来源：合肥物质科学研究院

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