Influence of the cathode surface conditions on V –A characteristics in low-pressure nitrogen discharge

Saša Gocić, Nikola Škoro, Dragana Marić, Zoran Petrović

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3 Citations (Scopus)

Abstract

In this paper we demonstrate and analyse the influence of cathode surface inhomogeneities on the breakdown, volt–ampere (V –A) characteristics and the spatial structure of the low-pressure non-equilibrium discharges. The idea for this work came from the need to explain the non-typical V –A characteristics (positive slope of the characteristics in low-current regime of the discharge) that we observed in a parallel-plate, dc discharge in nitrogen. It was found that the cathode was locally conditioned by the discharge that operated in the constricted glow regime. Spatial inhomogeneity of the cathode surface strongly affected the subsequent operation in the breakdown-Townsend regime where discharge is supposed to be uniform.
Original languageEnglish
Article number 035003
Number of pages9
JournalPlasma Sources Science and Technology
Volume23
DOIs
Publication statusPublished - 15 May 2014

Keywords

  • nitrogen
  • volt-ampere characteristics
  • low presure gas discharge

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