Dust Charging in the Sheath of an Electronegative Plasma
WANG Zheng-Xiong, WANG Wen-Chun, LIU Yue, LIU Jin-Yuan, WANG Xiao-Gang
State Key Laboratory of Materials Modification by Laser, Electron and Ion Beams, Department of Physics, Dalian University of Technology, Dalian 116024
Dust Charging in the Sheath of an Electronegative Plasma
WANG Zheng-Xiong;WANG Wen-Chun;LIU Yue;LIU Jin-Yuan;WANG Xiao-Gang
State Key Laboratory of Materials Modification by Laser, Electron and Ion Beams, Department of Physics, Dalian University of Technology, Dalian 116024
关键词 ：
52.40.Kh ,
52.27.Cm ,
52.27.Lw
Abstract ：We theoretically investigate the dust charging in the sheath of an electronegative plasma, by using a single dust grain model based on a previous sheath structure [Chin. Phys. Lett 20 (2003) 1537] in which cold positive ions and hot negative ions have been assumed. It is found that dust grains are first charged negatively at the sheath edge and then begin to be charged positively in the sheath. Moreover, both the temperature ratio of electrons to negative ions and the density ratio of negative ions to positive ions have effects on the neutral point of the dust charge.
Key words ：
52.40.Kh
52.27.Cm
52.27.Lw
出版日期: 2004-04-01
:
52.40.Kh
(Plasma sheaths)
52.27.Cm
(Multicomponent and negative-ion plasmas)
52.27.Lw
(Dusty or complex plasmas; plasma crystals)
引用本文:
WANG Zheng-Xiong;WANG Wen-Chun;LIU Yue;LIU Jin-Yuan;WANG Xiao-Gang. Dust Charging in the Sheath of an Electronegative Plasma[J]. 中国物理快报, 2004, 21(4): 697-699.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2004/V21/I4/697
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2004, Vol. 21 
