Influence of gas heating on high pressure dc microdischarge I-V characteristics

被引：17

作者：

Belostotskiy, Sergey G. ^{[1
]}

Donnelly, Vincent M. ^{[1
]}

Economou, Demetre J. ^{[1
]}

机构：

[1] Univ Houston, Plasma Proc Lab, Dept Chem & Biomol Engn, Houston, TX 77204 USA

来源：

PLASMA SOURCES SCIENCE & TECHNOLOGY | 2008年 / 17卷 / 04期

关键词：

D O I：

10.1088/0963-0252/17/4/045018

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：

Experimental I-V characteristics of dc microdischarges in helium at different operating pressures (p = 300-800 Torr) reveal that the classical scaling law of the cathode layer (sheath) does not apply. It is shown that a modified semi-analytical model of the cathode layer that accounts for neutral gas heating is able to reproduce the trends of the experimental I-V characteristics. The model can also be used to quantify the influence of gas heating on microdischarge characteristics and to estimate conditions for stable operation of microdischarges.

引用

页数：6

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