Floating potential measurements in plasmas: From dust to spacecraft

被引：5
|
作者：
Beadles, R. [1 ,2 ]
Wang, X. [1 ,2 ]
Horanyi, M. [1 ,2 ]
机构：
[1] Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80303 USA
[2] NASA, SSERVIs Inst Modeling Plasma Atmospheres & Cosm D, Boulder, CO 80303 USA
来源：
PHYSICS OF PLASMAS | 2017年 / 24卷 / 02期
关键词：
COAGULATION;
D O I：
10.1063/1.4975610
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
We present measurements of the floating potential of spherical probes, used as a model of a dust particle or a spacecraft, immersed in plasmas with a wide range of Debye lengths. Our experimental results verified the theoretical prediction that the probe floating potential is a function of the Debye length. It is shown that, in an argon plasma with the ion to electron temperature ratio similar to 0.01, the magnitude of the floating potential is approximately doubled when the Debye length is changed from larger to smaller than the radius of the probe. Published by AIP Publishing.
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页数：3
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