Similarity laws for glow discharges with cathodes of metal and an electrolyte

P. Mezei, T. Cserfalvi, M. Jánossy, K. Szöcs, H. J. Kim

Research output: Contribution to journalArticle

56 Citations (Scopus)


The pressure dependence of the cathodic current density in the case of an electrolyte and a metal cathode glow discharge operating in air and helium atmospheres was investigated. In all cases, at pressures above 100-200 mbar, violation of the similarity law j ≈ constant × p2 was observed, which was attributed to the occurrence of the dissociative recombination of molecular ions of the applied gases (H2O+, N+2 and He+2). Taking into consideration this process, the relation j ≈ constant × √p was deducted, which was found to be in accordance with experimental data. In the case of an electrolyte cathode this relation was found to be valid also at low pressures.

Original languageEnglish
Pages (from-to)2818-2825
Number of pages8
JournalJournal of Physics D: Applied Physics
Issue number20
Publication statusPublished - Oct 21 1998

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

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