Disrupting the spatio-temporal symmetry of the electron dynamics in atmospheric pressure plasmas by voltage waveform tailoring

Andrew R. Gibson, Zoltán Donkó, Layla Alelyani, Lena Bischoff, Gerrit Hübner, Jérôme Bredin, Scott Doyle, Ihor Korolov, Kari Niemi, Thomas Mussenbrock, Peter Hartmann, James P. Dedrick, Julian Schulze, Timo Gans, Deborah O'Connell

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Single frequency, geometrically symmetric Radio-Frequency (RF) driven atmospheric pressure plasmas exhibit temporally and spatially symmetric patterns of electron heating, and consequently, charged particle densities and fluxes. Using a combination of phase-resolved optical emission spectroscopy and kinetic plasma simulations, we demonstrate that tailored voltage waveforms consisting of multiple RF harmonics induce targeted disruption of these symmetries. This confines the electron heating to small regions of time and space and enables the electron energy distribution function to be tailored.

Original languageEnglish
Article number01LT01
JournalPlasma Sources Science and Technology
Volume28
Issue number1
DOIs
Publication statusPublished - Jan 7 2019

Keywords

  • atmospheric pressure plasmas
  • electron energy distribution functions
  • electron heating
  • particle-in-cell simulations
  • phase-resolved optical emission spectroscopy
  • radio-frequency plasmas
  • voltage waveform tailoring

ASJC Scopus subject areas

  • Condensed Matter Physics

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    Gibson, A. R., Donkó, Z., Alelyani, L., Bischoff, L., Hübner, G., Bredin, J., Doyle, S., Korolov, I., Niemi, K., Mussenbrock, T., Hartmann, P., Dedrick, J. P., Schulze, J., Gans, T., & O'Connell, D. (2019). Disrupting the spatio-temporal symmetry of the electron dynamics in atmospheric pressure plasmas by voltage waveform tailoring. Plasma Sources Science and Technology, 28(1), [01LT01]. https://doi.org/10.1088/1361-6595/aaf535