Absolute spatially and time-resolved O, O3, and air densities in the effluent of a modulated RF-driven atmospheric pressure plasma jet obtained by molecular beam mass spectrometry

Jingkai Jiang; Yuchen Luo; Ankit Moldgy; Yolanda Aranda Gonzalvo; Peter J. Bruggeman

doi:10.1002/ppap.201900163

Absolute spatially and time-resolved O, O₃, and air densities in the effluent of a modulated RF-driven atmospheric pressure plasma jet obtained by molecular beam mass spectrometry

Jingkai Jiang, Yuchen Luo, Ankit Moldgy, Yolanda Aranda Gonzalvo, Peter J. Bruggeman

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

In this paper, we report a molecular beam mass spectrometer study of a time-modulated radiofrequency (RF)-driven atmospheric pressure plasma jet in Ar + 1% O₂. Time-resolved measurements of the absolute density of O₃ during the RF modulation period revealed a temporal increase of O₃ densities at the start and end of the power modulation. This increase correlates with the increase in O₂ due to plasma-induced transient vortices in the gas jet. Pseudo-one-dimensional plug flow modeling of the axial species densities as a function of distance match well with the experimentally recorded trends. The obtained results were used to assess the importance of the O flux in previously reported ClO⁻ production in saline by the same plasma jet.

Original language	English (US)
Article number	1900163
Journal	Plasma Processes and Polymers
Volume	17
Issue number	6
DOIs	https://doi.org/10.1002/ppap.201900163
State	Published - Jun 1 2020

Bibliographical note

Funding Information:
The authors sincerely thank Prof. M. Kushner (University of Michigan) for providing the GlobalKin code and advice. The authors acknowledge the Minnesota Supercomputing Institute (MSI) at the University of Minnesota in providing resources that contributed to the results reported in this paper. This study was supported by the National Science Foundation (CBET 1703439) and the US Department of Energy, Office of Fusion Energy Sciences (DESC0001939).

Funding Information:
The authors sincerely thank Prof. M. Kushner (University of Michigan) for providing the GlobalKin code and advice. The authors acknowledge the Minnesota Supercomputing Institute (MSI) at the University of Minnesota in providing resources that contributed to the results reported in this paper. This study was supported by the National Science Foundation (CBET 1703439) and the US Department of Energy, Office of Fusion Energy Sciences (DESC0001939).

Keywords

absolute density
atomic oxygen
molecular beam mass spectrometer
ozone
plug flow model

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Absolute spatially and time-resolved O, O₃, and air densities in the effluent of a modulated RF-driven atmospheric pressure plasma jet obtained by molecular beam mass spectrometry. / Jiang, Jingkai; Luo, Yuchen; Moldgy, Ankit; Aranda Gonzalvo, Yolanda; Bruggeman, Peter J.

In: Plasma Processes and Polymers, Vol. 17, No. 6, 1900163, 01.06.2020.

Research output: Contribution to journal › Article › peer-review

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title = "Absolute spatially and time-resolved O, O3, and air densities in the effluent of a modulated RF-driven atmospheric pressure plasma jet obtained by molecular beam mass spectrometry",

abstract = "In this paper, we report a molecular beam mass spectrometer study of a time-modulated radiofrequency (RF)-driven atmospheric pressure plasma jet in Ar + 1% O2. Time-resolved measurements of the absolute density of O3 during the RF modulation period revealed a temporal increase of O3 densities at the start and end of the power modulation. This increase correlates with the increase in O2 due to plasma-induced transient vortices in the gas jet. Pseudo-one-dimensional plug flow modeling of the axial species densities as a function of distance match well with the experimentally recorded trends. The obtained results were used to assess the importance of the O flux in previously reported ClO− production in saline by the same plasma jet.",

keywords = "absolute density, atomic oxygen, molecular beam mass spectrometer, ozone, plug flow model",

author = "Jingkai Jiang and Yuchen Luo and Ankit Moldgy and {Aranda Gonzalvo}, Yolanda and Bruggeman, {Peter J.}",

note = "Funding Information: The authors sincerely thank Prof. M. Kushner (University of Michigan) for providing the GlobalKin code and advice. The authors acknowledge the Minnesota Supercomputing Institute (MSI) at the University of Minnesota in providing resources that contributed to the results reported in this paper. This study was supported by the National Science Foundation (CBET 1703439) and the US Department of Energy, Office of Fusion Energy Sciences (DESC0001939). Funding Information: The authors sincerely thank Prof. M. Kushner (University of Michigan) for providing the GlobalKin code and advice. The authors acknowledge the Minnesota Supercomputing Institute (MSI) at the University of Minnesota in providing resources that contributed to the results reported in this paper. This study was supported by the National Science Foundation (CBET 1703439) and the US Department of Energy, Office of Fusion Energy Sciences (DESC0001939).",

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