Zero-dimensional simulations of He/N<sub>2</sub>(v&lt;58)/O<sub>2 </sub>(v&lt;41)<sub> </sub>microscale atmospheric-pressure plasma jets: Validation with a focus on NO density

ORAL

Abstract

Reactive oxygen and nitrogen species produced by atmospheric-pressure plasma jets are of importance in biomedical applications, e.g., nitric oxide (NO) for wound healing. The jets are investigated by zero-dimensional (volume-averaged) and pseudo-one-dimensional (plug-flow) models, coupled with the Boltzmann equation under the two-term approximation to self-consistently calculate the electron energy distribution function. The simulation results are validated against a wide variety of measurements in He, N2, He/O2, He/N2 and He/N2/O2 plasmas. The NO density is determined as a function of the gas mixture ratio, helium flow rate and absorbed power. A larger hypothetical “effective” rate coefficient value is necessary for the reactive quenching N2(A3Σ, B3Π; v=0) + O(3P) → NO + N(2D) in the simulations to better capture the NO density measurements at low power. This indicates that in this quenching the species N2(A3Σ, B3Π; v>0) and multiple higher N2 electronically excited states also play an underlying role in NO production at low power. The sensitivity of the simulated plasma properties to the N2(v) and O2(v) resolutions, the wall reaction probabilities and the synthetic air impurity levels is uncovered.

*This work is funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - Project-ID 327886311 (SFB 1316: simulations by A9 & A8 and measurements by B2 & A4). VG was partially funded by the Portuguese FCT, under projects UIDB/50010/2020 and UIDP/50010/2020.

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Publication: A paper was submitted to "Plasma Sources Science and Technology" with the title of "Zero-dimensional and pseudo-one-dimensional models of atmospheric-pressure plasma jet in binary and ternary mixtures of oxygen and nitrogen with helium background"
ArXiv link: https://arxiv.org/abs/2105.05742

Presenters

  • Youfan He

    • Institute of Theoretical Electrical Engineering, Faculty of Electrical Engineering and Information Technology, Ruhr-University Bochum, Germany

Authors

  • Youfan He

    • Institute of Theoretical Electrical Engineering, Faculty of Electrical Engineering and Information Technology, Ruhr-University Bochum, Germany

  • Patrick Preissing

    • Experimental Physics II, Faculty of Physics and Astronomy, Ruhr-University Bochum, Germany

  • David Steuer

    • Plasma Interface Physics, Ruhr-University Bochum, D-44801 Bochum, Germany
    • Experimental Physics II, Faculty of Physics and Astronomy, Ruhr-University Bochum, Germany
    • RUB Physik EPII; CRC 1316

  • Maximilian Klich

    • Institute of Theoretical Electrical Engineering, Faculty of Electrical Engineering and Information Technology, Ruhr-University Bochum, Germany
    • Ruhr University Bochum

  • Volker Schulz-von der Gathen

    • Ruhr-University Bochum
    • Experimental Physics II, Faculty of Physics and Astronomy, Ruhr-University Bochum, Germany
    • RUB Physik EPII; CRC 1316

  • Marc Böke

    • Ruhr-University Bochum
    • Experimental Physics II, Faculty of Physics and Astronomy, Ruhr-University Bochum, Germany
    • 1Ruhr-University Bochum, Experimental Physics II
    • RUB Physik EPII; CRC 1316

  • Ihor Korolov

    • Ruhr Univ Bochum
    • Institute of Electrical Engineering and Plasma Technology, Faculty of Electrical Engineering and Information Technology, Ruhr-University Bochum, Germany
    • Ruhr-Universität Bochum, Germany
    • Ruhr University Bochum
    • Bochum University
    • Ruhr Univ Bochum, Germany
    • Ruhr-University Bochum
    • Ruhr-University Bochum, Germany

  • Julian Schulze

    • Ruhr University Bochum
    • Institute of Electrical Engineering and Plasma Technology, Faculty of Electrical Engineering and Information Technology, Ruhr-University Bochum, Germany
    • Ruhr Univ Bochum
    • Ruhr-University Bochum, Germany; Dalian University of Technology, China
    • Ruhr University Bochum, Dalian University of Technology
    • Ruch Univ Bochum, Germany
    • Ruhr-University Bochum

  • Vasco Guerra

    • Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Portugal
    • Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
    • Instituto de Plasmas e Fusãão Nuclear, Instituto Superior Técnico, Universidade de Lisboa 1049-001 Lisboa, Portugal
    • IPFN

  • Ralf Peter Brinkmann

    • Ruhr University Bochum, Institute of Theoretical Electrical Engineering
    • Institute of Theoretical Electrical Engineering, Faculty of Electrical Engineering and Information Technology, Ruhr-University Bochum, Germany

  • Efe Kemaneci

    • Ruhr-University Bochum
    • Ruhr Univ Bochum
    • Institute of Theoretical Electrical Engineering, Faculty of Electrical Engineering and Information Technology, Ruhr-University Bochum, Germany