Thermal and Optical Study on the Frequency Dependence of an Atmospheric Microwave Argon Plasma Jet

Schopp, Christoph; Britun, Nikolay; Voráč, Jan; Synek, Petr; Snyders, Rony; Heuermann, Holger

doi:10.1109/tps.2019.2919245

Cited by 4 publications

(1 citation statement)

References 16 publications

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“…However, to date, no identical phenomena have been reported in the literature. [43][44][45][46][47][48][49][50][51][52][53][54][55] To gain insights into the underlying mechanisms, the authors conducted simulations to analyze the non-uniform distribution of the electrostatic field and identified that a force is exerted on the plasma jet due to the dielectric characteristics of the plasma under the external electric field. Additionally, the non-neutral characteristics of the atmospheric pressure plasma jet (APPJ), as previously reported in the authors' earlier work, result in the Coulomb force from the applied electrostatic field influencing the behavior of the plasma jet, leading to differential deflections under negative and positive voltages.…”

Section: Introductionmentioning

confidence: 99%

Exploring the connection between non‐uniform electrostatic fields generated by opposite polarity voltages and the behavior of atmospheric pressure plasma jet

Yu,

Wu,

Chen

et al. 2024

Contrib. Plasma Phys

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This study investigates the counterintuitive behaviors of a microwave‐induced atmospheric pressure plasma jet (APPJ) under the influence of an external electrostatic field applied by one or a pair of parallel electrode plates subjected to DC voltages. The findings demonstrate that the plasma jet consistently deflects toward the electrode plate with an electrostatic potential, irrespective of the direction of the applied field. The deflection becomes more pronounced with increasing voltage on the electrode plate until the ionic wind generated by the high voltage significantly affects the jet's behavior. Remarkably, a negative voltage induces a greater deflection compared to a positive voltage. To further investigate this discovery, the dielectric properties and the non‐neutral characteristics of the APPJ are analyzed, and the simulations of the electric field distribution reveal a non‐uniform distribution, which plays a crucial role in understanding the mechanism behind the observed behaviors of the plasma jet. This study provides a comprehensive understanding of the underlying mechanism driving the observed phenomena and sheds light on the collective behavior of plasma jets under non‐uniform electric fields. The findings of this study offer valuable guidelines for investigating and controlling the behavior of APPJs.

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Section: Introductionmentioning

confidence: 99%

Exploring the connection between non‐uniform electrostatic fields generated by opposite polarity voltages and the behavior of atmospheric pressure plasma jet

Yu,

Wu,

Chen

et al. 2024

Contrib. Plasma Phys

View full text Add to dashboard Cite

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Hyperspectral imaging of a microwave argon plasma jet expanding in ambient air

Khazem,

Durocher-Jean,

Hamdan

et al. 2024

Review of Scientific Instruments

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Non-equilibrium plasmas at atmospheric pressure are often characterized by optical emission spectroscopy. Despite the simplicity of recording optical emission spectra in plasmas, the determination of spatially resolved plasma properties (e.g., electron temperature) in an efficient way is very challenging. In this study, spatially resolved optical images of a microwave argon plasma jet expanding into the ambient air are recorded over a wide range of wavelengths using a hyperspectral imaging system based on a tunable Bragg-grating imager coupled to a scientific complementary metal–oxide–semiconductor camera. The system’s working principle is detailed, along with the necessary post-processing steps. Further analysis of the spatial–spectral data, including the Abel transform used to determine 2D radially resolved spatial mappings, is also presented. Overall, the proposed approach provides unprecedented cartographies of key plasma parameters, such as argon and oxygen line emission intensities, Ar metastable number densities, and argon excitation temperatures. Considering that all these plasma parameters are obtained from measurements performed in a reasonable time, Bragg-grating-based hyperspectral imaging constitutes an advantageous plasma diagnostic technique for detailed analysis of microwave plasma jets used in several applications.

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Influence of a nearby conductor on shape and length of a microwave plasma jet

2020

Phys. Rev. E

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Thermal and Optical Study on the Frequency Dependence of an Atmospheric Microwave Argon Plasma Jet

Cited by 4 publications

References 16 publications

Exploring the connection between non‐uniform electrostatic fields generated by opposite polarity voltages and the behavior of atmospheric pressure plasma jet

Exploring the connection between non‐uniform electrostatic fields generated by opposite polarity voltages and the behavior of atmospheric pressure plasma jet

Hyperspectral imaging of a microwave argon plasma jet expanding in ambient air

Influence of a nearby conductor on shape and length of a microwave plasma jet

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