Tailoring electron energy distribution functions through energy confinement in dual radio-frequency driven atmospheric pressure plasmas

C. O'Neill*, J. Waskoenig, T. Gans

*Corresponding author for this work

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A multi-scale numerical model based on hydrodynamic equations with semi-kinetic treatment of electrons is used to investigate the influence of dual frequency excitation on the effective electron energy distribution function (EEDF) in a radio-frequency driven atmospheric pressure plasma. It is found that variations of power density, voltage ratio, and phase relationship provide separate control over the electron density and the mean electron energy. This is exploited to directly influence both the phase dependent and time averaged effective EEDF. This enables tailoring the EEDF for enhanced control of non-equilibrium plasma chemical kinetics at ambient pressure and temperature. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4758463]

Original languageEnglish
Article numberARTN 154107
Number of pages4
JournalApplied Physics Letters
Issue number15
Publication statusPublished - 8 Oct 2012



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