Propagation dynamics of a helium micro-tube plasma: Experiments and numerical modeling

Gazeli, Odhisea; Lazarou, Constantinos; Niu, Guanghui; Anastassiou, Charalambos; Georghiou, George E.; Franzke, Joachim

doi:10.1016/j.sab.2021.106248

Cited by 10 publications

(5 citation statements)

References 60 publications

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“…By solving the Poisson's equation in the vertically asymmetric geometry, one computes the EF streamlines shown in figure 2a). Similar computations have been reported in [8,9]. More specifically the extended and comprehensive model of APPJ described in [10] shows simulations results of the EF vector distribution ahead of a negative IW in figure 7.…”

Section: Vector Field and Angular Position Of The Eo Probesupporting

confidence: 78%

Reply to ‘Commentary on Mapping the electric field vector of guided ionization waves at atmospheric pressure, (2020) Plasma Res. Express 2 025014)’

Iséni

2022

Plasma Res. Express

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This is a Reply to the Comment of Dozias S., Pouvesle J.-M. and Robert E. on the paper ‘Mapping the electric field vector of guided ionization waves at atmospheric pressure’. The criticism in the Comment, namely that the measurements and the subsequent interpretations are wrong, seems to be invalid. Additional information will be detailed to discuss the point of view of the authors. However, the criticism raises an interesting comparison of two data sets presented in a normalized color scale. The resulting figure clearly supports the argument that the plasma-induced electric field measurements are consistent and validates the experimental investigation.

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Section: Vector Field and Angular Position Of The Eo Probesupporting

confidence: 78%

Reply to ‘Commentary on Mapping the electric field vector of guided ionization waves at atmospheric pressure, (2020) Plasma Res. Express 2 025014)’

Iséni

2022

Plasma Res. Express

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“…The electric field strength for the tube diameter of 0.1 mm is close to the numerical results reported by Ning et al [21], where the maximum electric field on the axis of symmetry reaches about 204 kV cm −1 in the He microplasma confined inside a capillary with a diameter of 0.1 mm. In addition, Gazeli et al [48] presented a numerical modeling of a He plasma jet for a tube diameter of 0.25 mm. At the initial stage of the plasma propagation, a large field of ∼100 kV cm −1 near the high-voltage electrode is observed, and then decreases over a time of ∼0.1 μs to about 85 kV cm −1 with applied voltage of 1.7 kV.…”

Section: Effects Of the Tube Diametermentioning

confidence: 99%

Characteristics of the plasma sheath in helium discharge within dielectric tubes

Guo²,

Ouyang³

et al. 2023

Plasma Sci. Technol.

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To understand the characteristics of the plasma sheath within small tubes, a two-dimensional numerical model of helium discharge within dielectric tubes is developed. During the plasma propagation for the tube diameter of 0.05 mm, the sheath thickness in the plasma head is almost equal to the tube radius. It decreases rapidly to several micrometers at the axial distance of 0.05 mm behind the plasma head, and then slightly increases and saturates at the axial position far behind the plasma head. A plasma-gas sheath surrounding the central plasma column is observed for the tube diameter equal to or greater than 0.8 mm. It is replaced by a plasma-wall sheath for smaller tubes. With the decrease of the tube diameter, the sheath thickness far behind the plasma head decreases and while the ion flux increases significantly. On the other hand, when the O2 gas with a proportion of 2% is added, both the sheath thickness and the ion flux decrease.

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“…Another example of a miniaturised source is a helium flexible micro-tube plasma (FμTP) reported by Gazeli et al 69 A quartz dielectric capillary was placed axially around a 100 μm diameter tungsten electrode. A square wave voltage 1.7 kV at 20 kHz was applied and the plasma generated in a He flow of 50 mL min −1 .…”

Section: Instrumentation and Fundamentalsmentioning

confidence: 99%

Atomic spectrometry update: review of advances in atomic spectrometry and related techniques

Evans

Pisonero

Smith

et al. 2022

J. Anal. At. Spectrom.

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Propagation dynamics of a helium micro-tube plasma: Experiments and numerical modeling

Cited by 10 publications

References 60 publications

Reply to ‘Commentary on Mapping the electric field vector of guided ionization waves at atmospheric pressure, (2020) Plasma Res. Express 2 025014)’

Reply to ‘Commentary on Mapping the electric field vector of guided ionization waves at atmospheric pressure, (2020) Plasma Res. Express 2 025014)’

Characteristics of the plasma sheath in helium discharge within dielectric tubes

Atomic spectrometry update: review of advances in atomic spectrometry and related techniques

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