Self-pulsing discharge of a plasma brush operated in atmospheric-pressure argon

Li, Xuechen; Liu, Runfu; Jia, Pengying; Bao, Wenting; Shang, Yingxin

doi:10.1209/0295-5075/102/55003

Cited by 15 publications

(8 citation statements)

References 22 publications

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“…Li et al employed the similar device as that used in Ref. 11 to generate a brush-shaped plasma jet 12 , where the same spatial discharge structure was observed. Another electrode configuration was reported by Lu et al 13 .…”

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confidence: 99%

Characterization of argon direct-current glow discharge with a longitudinal electric field applied at ambient air

Jiang

Tang

Wang

et al. 2014

Sci Rep

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A direct-current-driven plasma jet is developed by applying a longitudinal electric field on the flowing argon at ambient air. This plasma shows a torch shape with its cross-section increased from the anode to the cathode. Comparison with its counterparts indicates that the gas flow plays a key role in variation of the plasma structure and contributes much to enlarging the plasma volume. It is also found that the circular hollow metal base promotes generation of plasma with a high-power volume density in a limited space. The optical emission spectroscopy (OES) diagnosis indicates that the plasma comprises many reactive species, such as OH, O, excited N2, and Ar metastables. Examination of the rotational and vibrational temperature indicates that the plasma is under nonequilibrium condition and the excited species OH(A 2Σ+), O(5P), and N2(C 3Πu) are partly generated by energy transfer from argon metastables. The spatially resolved OES of plasma reveals that the negative glow, Faraday dark space, and positive column are distributed across the gas gap. The absence of the anode glow is attributed to the fact that many electrons in the vicinity of the anode follow ions into the positive column due to the ambipolar diffusion in the flowing gas.

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confidence: 99%

Characterization of argon direct-current glow discharge with a longitudinal electric field applied at ambient air

Jiang

Tang

Wang

et al. 2014

Sci Rep

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“…As time lapses, two new filaments will be born and repeat the same process mentioned above. As pointed out in the literature [27, 34], the filamentary‐mode plume is gas flow driven, whose moving velocity roughly equals to that of the rectangular stream.…”

Section: Resultsmentioning

confidence: 99%

“…The linear-field one often operates in a streamer mode, in which streamers propagate with a high velocity from 10 3 to 10 6 m/s [20][21][22]. Distinctively, with some specific devices and voltage waveforms, the cross-field planar plume can operate in a filamentary mode [23][24][25][26], in which filaments move along the gas stream with a low velocity of several metres per second [27][28][29]. Up to now, only single-mode planar plumes with either a streamer mode or a filamentary mode have been reported in the literature.…”

Section: Introductionmentioning

confidence: 99%

A double‐mode planar argon plume produced by varying the distance from an atmospheric pressure plasma jet

Liu

et al. 2023

High Voltage

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Atmospheric pressure planar plumes are desirable for the applications of low temperature plasmas, such as rapid modification of large‐scale surfaces. Up to now, only single‐mode planar plumes with either a streamer mode or a filamentary mode have been reported in the literature. Distinctive from the single‐mode planar plumes, a double‐mode argon planar plume has been generated in this article, which operates in the streamer mode with a larger distance away from a plasma jet and transits to the filamentary mode with decreasing the distance. Discharge characteristics and plasma parameters are compared for the two modes. Results indicate that the streamer mode and the filamentary mode correspond to pulsed and humped discharges respectively. Fast photography reveals that the streamer‐mode plume is composed of stochastically branching streamers, while the filamentary‐mode plume results from a series of moving filaments similar to those in barrier discharge. In contrast to the streamer mode, the filamentary mode has lower excited electron temperature and vibrational temperature, whereas higher electron density and gas temperature. In addition, better hydrophilicity of polyethylene terephthalate surface is achieved in the filamentary mode.

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“…Current limited point-to-point atmospheric pressure discharges were operated with both gas flow longitudinal [17] and transverse [18] in respect with the plasma channel. If the transverse gas drag is strong enough, the discharge will start to resemble the gliding arc discharge, with prolonging plasma column and periodical reignitions [16].…”

Section: Introductionmentioning

confidence: 99%

Experimental study of gliding arc plasma channel motion: buoyancy and gas flow phenomena under normal and hypergravity conditions

Potočňáková

Šperka

Zikán

et al. 2017

Plasma Sources Sci. Technol.

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Self-pulsing discharge of a plasma brush operated in atmospheric-pressure argon

Cited by 15 publications

References 22 publications

Characterization of argon direct-current glow discharge with a longitudinal electric field applied at ambient air

Characterization of argon direct-current glow discharge with a longitudinal electric field applied at ambient air

A double‐mode planar argon plume produced by varying the distance from an atmospheric pressure plasma jet

Experimental study of gliding arc plasma channel motion: buoyancy and gas flow phenomena under normal and hypergravity conditions

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