Investigation of the atmospheric helium dielectric barrier discharge driven by a realistic distorted-sinusoidal voltage power source

C. T. Hung, Y. M. Chiu, F. N. Hwang, M. H. Chiang, Jong-Shinn Wu*, Y. C. Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The non-equilibrium atmospheric-pressure parallel-plate helium dielectric barrier discharge (DBD) driven by a realistic 20 kHz distorted-sinusoidal voltage waveform has been investigated by means of simulations and experiments. A self-consistent one-dimensional fluid modeling code considering the non-local electron energy balance was applied to simulate the helium DBD. The effect of selecting plasma chemistry was investigated by comparing simulations with experiments. The results show that the simulations, which include more excited helium, metastable helium and electron-ion-related reaction channels, can faithfully reproduce the measured discharged temporal current quantitatively. Based on the simulated discharge properties, we have found that there is complicated mode transition of discharges from the long Townsend-like to the "dark current"-like, then to the short primary Townsend-like and the short secondary Townsend-like for the helium DBD that is driven by a realistic distorted-sinusoidal voltage power source. Discharge properties in different periods of discharge are discussed in detail in the paper.

Original languageEnglish
Pages (from-to)1-21
Number of pages21
JournalPlasma Chemistry and Plasma Processing
Volume31
Issue number1
DOIs
StatePublished - 1 Feb 2011

Keywords

  • Atmospheric pressure plasmas
  • Dielectric barrier discharge
  • Fluid modelling
  • Helium
  • Townsend-like discharge

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