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

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Publication details

JournalPlasma Sources Science and Technology
DateAccepted/In press - 30 Nov 2018
DateE-pub ahead of print - 30 Nov 2018
DatePublished (current) - 7 Jan 2019
Issue number1
Number of pages7
Early online date30/11/18
Original languageEnglish


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.

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© 2019 IOP Publishing Ltd. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy.

    Research areas

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

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