TY - JOUR
T1 - Gravity effects on a gliding arc in four noble gases : from normal to hypergravity
AU - Potocnáková, L.
AU - Šperka, J.
AU - Zikán, P.
AU - Loon, van, J.J.W.A.
AU - Beckers, J.
AU - Kudrle, V.
PY - 2015
Y1 - 2015
N2 - 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.
AB - 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.
U2 - 10.1088/0963-0252/24/2/022002
DO - 10.1088/0963-0252/24/2/022002
M3 - Article
SN - 0963-0252
VL - 24
SP - 022002-1/6
JO - Plasma Sources Science and Technology
JF - Plasma Sources Science and Technology
IS - 2
ER -