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

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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

Publisher Copyright:
© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

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 et al.
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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