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Effects of pressure and oxygen/nitrogen gas-mixture on streamer formation and propagation in a µs/ns-pulsed surface dielectric barrier discharge

ORAL

Abstract

An atmospheric-pressure surface dielectric barrier discharge (SDBD), driven by microsecond (µs) and nanosecond (ns) voltage pulses in nitrogen–oxygen mixtures at varying pressures, is investigated using both experimental and computational approaches. Phase-resolved optical emission spectroscopy (PROES) is employed for experimental diagnostics, and the results show good qualitative agreement with two dimensional fluid simulations using the nonPDPSIM code.

The discharge morphology, ranging from filamentary to homogeneous structures with varying propagation lengths, is shown to depend on operating parameters such as oxygen admixture, pressure, and the characteristics of the applied voltage pulse. The spatial development—both length and width—of streamers is systematically analyzed under different conditions. Notably, the discharge exhibits reduced stochastic behavior under ns-pulse excitation compared to µs-pulse excitation.

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Presenters

  • Gerrit Hübner

    Chair of Applied Electrodynamics and Plasma Technology, Ruhr University, Bochum, Germany

Authors

  • Gerrit Hübner

    Chair of Applied Electrodynamics and Plasma Technology, Ruhr University, Bochum, Germany

  • Nils Schoeneweihs

    Chair of Applied Electrodynamics and Plasma Technology, Ruhr Universität Bochum, Germany

  • Dominik Filla

    Chair of Applied Electrodynamics and Plasma Technology, Ruhr University, Bochum, Germany, ​Chair of Applied Electrodynamics and Plasma Technology, Ruhr University, Bochum, Germany

  • Mate Vass

    Ruhr University Bochum, Chair of Applied Electrodynamics and Plasma Technology, Ruhr University Bochum, Bochum, Germany, Chair of Applied Electrodynamics and Plasma Technology, Ruhr Universität Bochum, Germany

  • Yavuz E Yanaz

    Chair of Applied Electrodynamics and Plasma Technology, Ruhr Universität Bochum, Germany

  • Ihor Korolov

    Chair of Applied Electrodynamics and Plasma Technology, Ruhr University Bochum, Bochum, Germany, Chair of Applied Electrodynamics and Plasma Technology, Ruhr University Bochum, Germany

  • Thomas Mussenbrock

    Chair of Applied Electrodynamics and Plasma Technology, Ruhr University Bochum, Bochum, Germany