Numerical simulation of atmospheric-pressure 200 kHz / 13.56 MHz dual-frequency dielectric barrier discharges

TitleNumerical simulation of atmospheric-pressure 200 kHz / 13.56 MHz dual-frequency dielectric barrier discharges
Publication TypeJournal Article
Year of Publication2018
AuthorsY. Liu, van't K. Veer, F.JJ Peeters, D. Mihailova, J. van Dijk, S. Starostin, M.CM van de Sanden, H.W de Vries
JournalPlasma Sources Science and Technology
Volume27
Issue10
Pagination105016
Abstract

A one-dimensional drift-diffusion model is used to study atmospheric-pressure dual frequency (DF) dielectric barrier discharges in argon using the plasma modelling platform PLASIMO. The simulation exhibits an excellent agreement with the experimental results and gives insight into the DF plasma dynamics e.g. the electric field, the sheath edge profiles, the ionization/excitation rate and the electron energy distribution function (EEDF) profiles. The results indicate that due to the RF oscillation, the electric field, the sheath edge and thus the ionization/excitation are temporally modulated. As a result, the plasma conductivity is enhanced as the plasma density is higher. The discharge development is slowed down with a lower current amplitude and a longer duration. The time-averaged sheath is getting thinner with a more pronounced ionization rate and a longer contacting time near the substrate, which could help to improve the efficiency of plasma-assisted surface processing. In addition, the DF excitation exhibits a capability of modifying the EEDF profiles and controlling the plasma chemical kinetics, which can be applied to the other relevant fields e.g. gas phase chemical conversion.

DOI10.1088/1361-6595/aae555
Division

MaSF

Department

APPFF

PID

5a0f369d598f0c1ed999dbcc0f3c05de

Alternate TitlePlasma Sources Sci. Technol.

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