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

L. Potočňáková, J. Šperka, P. Zikán, J.J.W.A. van Loon, J. Beckers, V. Kudrle

Research output: Contribution to JournalArticleAcademicpeer-review


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.
Original languageEnglish
Article number022002
Number of pages6
JournalPlasma sources science & technology
Issue number2
Publication statusPublished - 2015


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