Gravity effects on a gliding arc in four noble gases: from normal to hypergravity
| Authors | |
|---|---|
| Year of publication | 2015 |
| Type | Article in Periodical |
| Magazine / Source | Plasma Sources Science and Technology |
| MU Faculty or unit | |
| Citation | |
| Web | http://iopscience.iop.org/0963-0252/24/2/022002/article |
| Doi | http://dx.doi.org/10.1088/0963-0252/24/2/022002 |
| Field | Plasma physics |
| Keywords | gliding arc; noble gases; hypergravity |
| Attached files | |
| Description | A gliding arc in four noble gases (He, Ne, Ar, Kr) has been studied under previously unexplored conditions of varying artifiial gravity, from normal 1 g gravity up to 18 g hypergravity. Signifiant 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 artifiial 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. |
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