A floating potential method for measuring ion density

被引：51

作者：

Chen, FF ^{[1
]}

Evans, JD ^{[1
]}

Arnush, D ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90095 USA

来源：

PHYSICS OF PLASMAS | 2002年 / 9卷 / 04期

关键词：

D O I：

10.1063/1.1462630

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：

A simple method for analyzing cylindrical Langmuir probe curves in a cold-ion plasma is described which yields the ion density in weakly collisional plasmas for which purely collisionless theories give erroneous results. The method is based on an extrapolation to the floating potential of the saturation ion current raised to the 4/3 power. This procedure is not supported by theory but apparently works because effects neglected in the theory tend to cancel. (C) 2002 American Institute of Physics.

引用

页码：1449 / 1455

页数：7

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