Phase resolved cross-correlation spectroscopy on surface barrier discharges in air at atmospheric pressure

Brandenburg, Ronny; Grosch, Helge; Hoder, Tomáš; Weltmann, Klaus‐Dieter

doi:10.1051/epjap/2011100481

Cited by 8 publications

(7 citation statements)

References 20 publications

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“…As it can bee seen in the single-shot ICCD pictures of figure 5(c), the discharge propagates in areas, where there was no discharge activity during the first group MDs, and thus, no residual surface charge from the previous event. This observation is in agreement with previous studies about volume [23], surface [24], and coplanar [27] single DBDs. After starting the second phase, the current starts to increase again and reaches a global broad maximum, which is correlated with the faster axial expansion of the anode glow in the gap.…”

Section: Discussionsupporting

confidence: 94%

“…In addition, second group MDs are brighter on the area of the surface that is close to the plasma channel in the gap, and plasma channels cover longer distances on the dielectric surface. These observations about the morphology of subsequent MDs can also be found in literature, for volume [23,30], surface [24] and coplanar [27] DBDs, which are attributed to the deposited surface charges from the preceding MDs.…”

Section: Electrical Measurements and Morphology Of Mdssupporting

confidence: 84%

“…Celestin et al [23] conducted an statistical study about the relation between the applied voltage amplitude and number of MDs appearing in one half-cycle. Brandenburg et al [24] obtained 4 MDs in one half-cycle of a surface DBD, and studied the different propagation of these MDs using ICCD images. Becker et al [25] and Avtaeva [26] modeled plane-to-plane DBDs with subsequent MDs in argon and Xe-Cl 2 mixtures, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Single microdischarges in a barrier corona arrangement with an anodic metal pin: discharge characteristics in subsequent breakdowns

Jahanbakhsh

Brüser

Brandenburg

2018

Plasma Sources Sci. Technol.

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Metal pin-to-dielectric-covered electrode arrangements can be considered as a combination of corona discharge and dielectric barrier discharge. In the current study, the discharge is operated in dry air at atmospheric pressure. Sinusoidal voltage is applied to the dielectric-covered hemispherical electrode, and the metal pin electrode is grounded. Using an ICCD camera and a current probe (Rogowski coil), images and current pulses of single microdischarges (MDs) are recorded simultaneously. In addition, a time-correlated single photon counting technique is used to record the spatio-temporally resolved development of the MDs. The appearance and properties of the MDs in the two polarities of the applied voltage differ significantly. In this contribution, only the results of the negative half-cycle, i.e. anodic pin, are presented. In this half-cycle, for the voltage amplitude being applied, two MDs appear in each applied voltage cycle. The first MDs leave a positive charge on the surface of the dielectric, which has considerable influence on the propagation and properties of the second MDs, namely slower propagation of the cathode directed streamer in the dielectric vicinity, further expansion of the plasma on the dielectric surface and longer presence of the bulk plasma in the gap.

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Section: Discussionsupporting

confidence: 94%

Section: Electrical Measurements and Morphology Of Mdssupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

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Single microdischarges in a barrier corona arrangement with an anodic metal pin: discharge characteristics in subsequent breakdowns

Jahanbakhsh

Brüser

Brandenburg

2018

Plasma Sources Sci. Technol.

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“…Any discharge in contact with an insulator causes discharge channels along the dielectric-gas interface. The discharge cell shown in figure 13 enabled the study of microdischarges by optimizing the electrostatic field geometry (see the ICCD photos) [209,304]. It consists of two needle electrodes placed on the opposite sides of an alumina plate.…”

Section: Single Filaments In Volume and On Surfacesmentioning

confidence: 99%

Dielectric barrier discharges: progress on plasma sources and on the understanding of regimes and single filaments

Brandenburg

2017

Plasma Sources Sci. Technol.

597

443

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Dielectric barrier discharges (DBDs) are plasmas generated in configurations with an insulating (dielectric) material between the electrodes which is responsible for a self-pulsing operation. DBDs are a typical example of nonthermal atmospheric or normal pressure gas discharges. Initially used for the generation of ozone, they have opened up many other fields of application. Therefore DBDs are a relevant tool in current plasma technology as well as an object for fundamental studies. Another motivation for further research is the fact that so-called partial discharges in insulated high voltage systems are special types of DBDs. The breakdown processes, the formation of structures, and the role of surface processes are currently under investigation. This review is intended to give an update to the already existing literature on DBDs considering the research and development within the last two decades. The main principles and different modes of discharge generation are summarized. A collection of known as well as special electrode configurations and reactor designs will be presented. This shall demonstrate the different and broad possibilities, but also the similarities and common aspects of devices for different fields of applications explored within the last years. The main part is devoted to the progress on the investigation of different aspects of breakdown and plasma formation with the focus on single filaments or microdischarges. This includes a summary of the current knowledge on the electrical characterization of filamentary DBDs. In particular, the recent new insights on the elementary volume and surface memory mechanisms in these discharges will be discussed. An outlook for the forthcoming challenges on research and development will be given.

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“…The increase of the voltage amplitude leads to the generation of further discharge pulses in the same half period. Four to six individual current pulses could be detected [37]. The top-view ICCD camera photo (left lower part of figure 8) at 3.2 kV shows that the first microdischarge in the half period develops on the direct path between the electrode positions.…”

Section: Surface Dischargesmentioning

confidence: 99%

Development of Barrier Discharges: Operation Modes and Structure Formation

Bogaczyk

Nemschokmichal

Wild

et al. 2012

Contrib. Plasma Phys.

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A discharge cell configuration combining three high-end diagnostic techniques (cross-correlation spectroscopy, electro-optic Pockels effect and laser induced fluorescence spectroscopy) has been developed. The joint application of these diagnostics enables the investigation of surface and bulk processes in barrier discharges in different arrangements. Surface charge density, N2(A) metastable state density, and optical radiation of plasma as three key parameters can be measured and correlated under identical and well-defined experimental conditions. Systematic measurements of absolute surface charge densities and nitrogen metastable concentrations are presented for different operation modes. The operation mode is mainly controlled by the gas composition, the discharge cell geometry, and the properties of the applied voltage. In particular, in pure helium the unusual Townsend-like discharge was investigated in detail. The described arrangements and the knowledge about reproducible control of discharge modes are an excellent base for the systematic investigation of the interaction between plasma and dielectric surface and its role on the formation, development, and structure of barrier discharges.

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Phase resolved cross-correlation spectroscopy on surface barrier discharges in air at atmospheric pressure

Cited by 8 publications

References 20 publications

Single microdischarges in a barrier corona arrangement with an anodic metal pin: discharge characteristics in subsequent breakdowns

Single microdischarges in a barrier corona arrangement with an anodic metal pin: discharge characteristics in subsequent breakdowns

Dielectric barrier discharges: progress on plasma sources and on the understanding of regimes and single filaments

Development of Barrier Discharges: Operation Modes and Structure Formation

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