Gravity effects on a gliding arc in four noble gases: from normal to hypergravity

被引：8

作者：

Potocnakova, L. ^{[1
]}

Sperka, J. ^{[1
,2
]}

Zikan, P. ^{[1
]}

van Loon, J. J. W. A. ^{[3
,4
,5
]}

Beckers, J. ^{[6
]}

Kudrle, V. ^{[1
]}

机构：

[1] Masaryk Univ, Dept Phys Elect, CZ-61137 Brno, Czech Republic

[2] Masaryk Univ, Cent European Inst Technol CEITEC, CZ-62500 Brno, Czech Republic

[3] ACTA VU Univ, DESC, Amsterdam, Netherlands

[4] Univ Amsterdam, Amsterdam, Netherlands

[5] TEC MMG, Estec, European Space Agcy, Noordwijk, Netherlands

[6] Eindhoven Univ Technol, Fac Appl Phys, NL-5600 MB Eindhoven, Netherlands

来源：

PLASMA SOURCES SCIENCE & TECHNOLOGY | 2015年 / 24卷 / 02期

关键词：

gliding arc; noble gases; hypergravity; PLASMA;

D O I：

10.1088/0963-0252/24/2/022002

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 gliding arc in four noble gases (He, Ne, Ar, Kr) has been studied under previously unexplored conditions of varying artificial gravity, from normal 1 g gravity up to 18 g hypergravity. Significant differences, mainly the visual thickness of the plasma channel, its maximum elongation and general sensitivity to hypergravity conditions, were observed between the discharges in individual gases, resulting from their different atomic weights and related quantities, such as heat conductivity or ionisation potential. Generally, an increase of the artificial gravity level leads to a faster plasma channel movement thanks to stronger buoyant force and a decrease of maximum height reached by the channel due to more intense losses of heat and reactive species. In relation to this, an increase in current and a decrease in absorbed power was observed.

引用

页数：6