Investigation of a single dielectric barrier discharge in submillimeter air gaps: Uniform field

Bondarenko, P. N.; Emelyanov, Oleg; Shemet, M. V.

doi:10.1134/s106378421406005x

Cited by 12 publications

(4 citation statements)

References 22 publications

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“…Although there are some works (e.g. [22,23]) that report on the impact of the gap distance on electrical characteristics, detailed studies on the impact of the electrode proximity on the breakdown and development of DBDs are still missing. However, experimental investigations on this are essential as a basis for the validation of models that are necessary to gain a comprehensive overview of the discharge behaviour [24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Impact of the electrode proximity on the streamer breakdown and development of pulsed dielectric barrier discharges

Wubs

Höft

Kettlitz

et al. 2022

Plasma Sources Sci. Technol.

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The impact of the electrode proximity on the streamer breakdown and development of pulsed-driven dielectric barrier discharges (DBDs) in a single-filament arrangement has been investigated in a gas mixture of 0.1 vol% O2 in N2 at 0.6 bar and 1.0 bar. The gap distance was varied from 0.5 mm to 1.5 mm, and the applied voltage was adapted correspondingly to create comparable breakdown conditions in the gap. The development of the DBDs was recorded by an iCCD and a streak camera system, while fast electrical measurements provided insight into discharge characteristics such as the transferred charge and consumed energy. The results demonstrate that breakdown in a smaller gap is characterised by a slower streamer propagation but a significantly higher acceleration. It can therefore be concluded that the proximity of the cathode has a strong impact on the characteristics of the streamer breakdown. However, after the streamer has crossed the gap, the discharge structure in front of the anode was found to be the same independent of the actual gap distance.

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Section: Introductionmentioning

confidence: 99%

Impact of the electrode proximity on the streamer breakdown and development of pulsed dielectric barrier discharges

Wubs

Höft

Kettlitz

et al. 2022

Plasma Sources Sci. Technol.

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“…This explains the intensive effort of the plasma community to invent novel DBD configurations and perform experimental and theoretical research on DBD plasma regimes. The numerous original papers and comprehensive reviews relevant to these topics [29][30][31][32][33][34][35][36][37][38][39][40] can serve as an evidence for this statement.…”

Section: Introductionmentioning

confidence: 93%

About the possible source of seed electrons initiating the very first breakdown in a DBD operating with the air at atmospheric pressure

Akishev

Karalnik

Medvedev

et al. 2021

Plasma Sources Sci. Technol.

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The conditions of the very first breakdown happening in a periodical dielectric barrier discharge (DBD) are not the same as those in the discharge established regime. The main intriguing problem in the very first breakdown is the source of the initial seed electrons. In this work, the role of atmospheric small negative ions in the appearance of seed electrons is investigated. The very first breakdown was studied by using a pin-to-plane barrier corona and plane-to-plane DBD operated with ambient air. These discharges were driven by fast- and slow-growing applied voltage. The experimental data related to the very first breakdown are presented. A short summary sounds as follows. In the case of a barrier corona initiated by a fast-growing voltage, seed electrons can appear due to their detachment from background negative ions in the bulk. Under a slow-increasing voltage, background ions have the time to be fully adsorbed on the cathode and the anode long before breakdown occurs. In such a case, seed electrons can appear from negative ions desorbed from the cathode. This desorption is induced by a strong electric field in the gap. The latter mechanism can work in a plane-to-plane DBD driven by both fast- and slow-growing applied voltage. Based on numerical calculations, a qualitative explanation of the obtained results is given. The influence of UV irradiation on the very first breakdown was also studied.

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“…In our estimation for the calculated REF, we compute a value of electrons in the avalanche train. It is known that the charge density on a dielectric surface is normally distributed:

G true(r true) = σ_{m a x} \cdot e^{- \frac{r^{2}}{2 s^{2}}}

where σ max —the maximum surface charge density, r —a radial coordinate, s —a standard deviation.…”

Section: Experimental Apparatusmentioning

confidence: 99%

“…The standard deviation was computed by an extrapolation of results obtained in Ref. for millimeter air gaps supposing that it depended mainly on electric charge in the avalanche train:

s_{n e g} = 3.29 \times 10^{- 2} \cdot l n (Q_{t r a i n}) + 7.11 \times 10^{- 2}

where s neg —a standard deviation for the negative charge deposition in nC · Cm −2 , Q train —an electric charge of avalanche train in nC.…”

Section: Experimental Apparatusmentioning

confidence: 99%

Optical analysis of pulse barrier discharge on initiation stages in air

Khomich

Malashin

2018

Plasma Processes & Polymers

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Experimental results on pulsed dielectric barrier discharge (DBD) initiation stages in air are given in the present work. Pictures of discharge afterglow and current traces from a sectioned electrode were collected and analyzed. The qualitative model of volume nanosecond DBD formation based on combination of well-known model of self-sustained gas discharge development together with surface charge spreading from electroscopic data is proposed. Represented qualitative explanation of observed phenomena involve summarized conclusions from cross-correlation spectroscopy researches, well-known streamer theory, model of self-sustained gas discharge development, and dielectric surface charge spreading behavior from electroscopic measurements.

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Investigation of a single dielectric barrier discharge in submillimeter air gaps: Uniform field

Cited by 12 publications

References 22 publications

Impact of the electrode proximity on the streamer breakdown and development of pulsed dielectric barrier discharges

Impact of the electrode proximity on the streamer breakdown and development of pulsed dielectric barrier discharges

About the possible source of seed electrons initiating the very first breakdown in a DBD operating with the air at atmospheric pressure

Optical analysis of pulse barrier discharge on initiation stages in air

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