Regular Article

The European Physical Journal D

, 67:261

Hypergravity effects on glide arc plasma

  • Jiří ŠperkaAffiliated withDepartment of Physical Electronics, Masaryk UniversityThe Central European Institute of Technology (CEITEC), Masaryk University Email author 
  • , Pavel SoučekAffiliated withDepartment of Physical Electronics, Masaryk University
  • , Jack J. W. A. Van LoonAffiliated withDutch Experiment Support Center (DESC), ACTA-VU-University and University of AmsterdamEuropean Space Agency (ESA), ESTEC, TEC-MMG
  • , Alan DowsonAffiliated withEuropean Space Agency (ESA), ESTEC, TEC-MMG
  • , Christian SchwarzAffiliated withEuropean Space Agency (ESA), ESTEC, TEC-MMG
  • , Jutta KrauseAffiliated withEuropean Space Agency (ESA), ESTEC, TEC-MMG
  • , Gerrit KroesenAffiliated withFaculty of Applied Physics, Eindhoven University of Technology
  • , Vít KudrleAffiliated withDepartment of Physical Electronics, Masaryk University

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Abstract

The behaviour of a special type of electric discharge – the gliding arc plasma – has been investigated in hypergravity (1g–18g) using the Large Diameter Centrifuge (LDC) at ESA/ESTEC. The discharge voltage and current together with the videosignal from a fast camera have been recorded during the experiment. The gliding of the arc is governed by hot gas buoyancy and by consequence, gravity. Increasing the centrifugal acceleration makes the glide arc movement substantially faster. Whereas at 1g the discharge was stationary, at 6g it glided with 7 Hz frequency and at 18g the gliding frequency was 11 Hz. We describe a simple model for the glide arc movement assuming low gas flow velocities, which is compared to our experimental results.

Keywords

Plasma Physics