Floating Potentials in Two-Electron Temperature Plasma with Two Species of Positive Ions: Kinetic Model and PIC Simulation

被引：7

作者：

Cercek, M. ^{[1
,3
]}

Filipic, G. ^{[1
]}

Gyergyek, T. ^{[1
,2
]}

Kovacic, J. ^{[2
]}

机构：

[1] Jozef Stefan Inst, Ljubljana 1000, Slovenia

[2] Univ Ljubljana, Fac Elect Engn, Ljubljana 1000, Slovenia

[3] Univ Maribor, Fac Civil Engn, SLO-2000 Maribor, Slovenia

来源：

CONTRIBUTIONS TO PLASMA PHYSICS | 2010年 / 50卷 / 09期

关键词：

Two-electron temperature plasma; double-ion plasma; pre-sheath; sheath; PIC simulation; BOUNDARY-CONDITIONS; BOHM CRITERION; SHEATH; COLLECTOR;

D O I：

10.1002/ctpp.201010154

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：

Potential formation in a two electron temperature plasma with two species of positive ions has been studied analytically by a one-dimensional, collision-less fully kinetic model. The results have been verified in a PIG simulation. It has been found that addition of heavy ions and energetic electrons lowers the floating potential of an electrode in plasma. We have also shown that each ion species enters the sheath with the same velocity normalized to the corresponding ion acoustic velocity. Because of that the lighter ions hit the collector with higher velocity as compared to the case when they are the only ion species in the plasma. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：909 / 914

页数：6

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