Self-consistent development and fractal structure of leader discharges along a water surface

Belosheev, V. P.

doi:10.1134/1.1259305

Cited by 8 publications

(5 citation statements)

References 3 publications

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“…The first studies showed single and particularly multichannel development of the discharge with a central core of the discharge and numerous branches developing from it in form of leaders and later streamers that touch the water surface. [34][35][36][37][38][39] Leaders were also observed in a surface barrier discharge emerging from a conductive water electrode. 40 In the present study, the emissions of the discharge core and of the leader/streamer periphery were recorded for self-pulsing discharge in air over water surface and are presented in Figure 7.…”

Section: Gaussianmentioning

confidence: 97%

Spectroscopic study of self-pulsing discharge with liquid electrode

Sretenović

Saleem

Biondo

et al. 2021

Journal of Applied Physics

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The article reports and discusses the results of a thorough spectroscopic investigation of the self-pulsing electrical discharge in contact with aqueous media. The discharge occurs between a bare high voltage electrode positioned over the liquid and a grounded ring submerged by the liquid. It is supplied with DC high voltage, but it operates in pulse mode that is determined by the charging and discharging of a parallelly connected capacitor. This type of discharge has attracted our attention due to its complex physics, as well as to its high efficiency in inducing the degradation of highly inert hazardous pollutants present in the water, such as perfluoroalkyl substances. The generated discharge unites several types of plasma in a single discharge cell. It starts as a high temperature (2500 K), high electron density (1016–17 cm−3) spark-like discharge close to the high voltage electrode and then branches into a large number of cooler leaders characterized by one order of magnitude lower electron density (1015 cm−3) in the middle of the gap and finally touches the liquid electrode through a dense network of low temperature (500 K) and low electron density streamers (1014 cm−3). The paper discusses the results of a parametric study that has provided temperature and electron density data in different regions of the discharge. The measurements were thus performed for discharges in ambient air, in synthetic air (an 80/20 N2/O2 mixture) and in argon with, as liquid electrode, either tap or ultrapure water containing a small amount of perfluorooctanoic acid.

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Section: Gaussianmentioning

confidence: 97%

Spectroscopic study of self-pulsing discharge with liquid electrode

Sretenović

Saleem

Biondo

et al. 2021

Journal of Applied Physics

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“…The structures of discharge channels formed in the dielectric breakdown of gases, liquids, and at the gas/liquid interface have also been studied as a stochastic processes using fractal models 303-309 and Monte Carlo simulations of fractal-type breakdown. , These models provide simulations of the branch or treelike structures that form in breakdown processes. The fractal dimension of multichannel streamer development over a water surface was determined through experiment to be 1.8 . The higher value of 1.8, in comparison to that for discharge over a solid dielectric (1.7), is attributed to the solution conductivity, leading to high space filling of the discharge over the water surface.…”

Section: Physics Of Electrohydraulic Dischargementioning

confidence: 98%

“…The fractal dimension of multichannel streamer development over a water surface was determined through experiment to be 1.8. 310 The higher value of 1.8, in comparison to that for discharge over a solid dielectric (1.7), is attributed to the solution conductivity, leading to high space filling of the discharge over the water surface. (To fill a two-dimensional surface, the fractal dimension would be 2.)…”

Section: Streamer Formation In Watermentioning

confidence: 99%

Electrohydraulic Discharge and Nonthermal Plasma for Water Treatment

Locke

Sato

Šunka

et al. 2005

Ind. Eng. Chem. Res.

1,065

616

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The application of strong electric fields in water and organic liquids has been studied for several years, because of its importance in electrical transmission processes and its practical applications in biology, chemistry, and electrochemistry. More recently, liquid-phase electrical discharge reactors have been investigated, and are being developed, for many environmental applications, including drinking water and wastewater treatment, as well as, potentially, for environmentally benign chemical processes. This paper reviews the current status of research on the application of high-voltage electrical discharges for promoting chemical reactions in the aqueous phase, with particular emphasis on applications to water cleaning.

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“…Research in this field is, however, quite phenomenological. Belosheev [102][103][104][105] studied leader propagation on water surfaces. He found that there was a oneto-one correspondence between the channel lengths and the currents flowing in them during the discharge.…”

Section: Discharges In the Gas Phase With One Or Two Liquid Electrodementioning

confidence: 99%

Non-thermal plasmas in and in contact with liquids

Bruggeman

Leys

2009

J. Phys. D: Appl. Phys.

1,121

775

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During the last two decades atmospheric (or high) pressure non-thermal plasmas in and in contact with liquids have received a lot of attention in view of their considerable environmental and medical applications. The simultaneous generation of intense UV radiation, shock waves and active radicals makes these discharges particularly suitable for decontamination, sterilization and purification purposes. This paper reviews the current status of research on atmospheric pressure non-thermal discharges in and in contact with liquids. The emphasis is on their generation mechanisms and their physical characteristics.

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Self-consistent development and fractal structure of leader discharges along a water surface

Cited by 8 publications

References 3 publications

Spectroscopic study of self-pulsing discharge with liquid electrode

Spectroscopic study of self-pulsing discharge with liquid electrode

Electrohydraulic Discharge and Nonthermal Plasma for Water Treatment

Non-thermal plasmas in and in contact with liquids

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