Electric and spectroscopic analysis of a pure nitrogen mono-filamentary dielectric barrier discharge (MF-DBD) at 760 Torr

Sewraj, Neermalsing; Merbahi, Nofel; Gardou, Jean-Pierre; Akerreta, Peyo Rodriguez; Marchal, Frédéric

doi:10.1088/0022-3727/44/14/145201

Cited by 18 publications

(17 citation statements)

References 37 publications

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“…In literature, studies on SF-DBDs have frequently been performed to gain fundamental knowledge about discharge mechanisms of filamentary DBDs, which is difficult to obtain from conventional DBDs with a large number of filaments distributed in space and time. [37][38][39] Ar-HMDSO mixtures generally form uniform glow DBDs over a wide range of x M , due to the dominance of Penning ionization. [17] The "single-filament" DBDs in these mixtures, obtained in the present study, are of substantial interest, because they represent DBDs with the lowest possible extension in the gas flow direction, typically 0.1 cm.…”

Section: +2mentioning

confidence: 99%

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Evidence of ionic film deposition from single‐filament dielectric barrier discharges in Ar–HMDSO mixtures

Bröcker

Perlick

Klages

2020

Plasma Processes & Polymers

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The short residence time of Ar-HMDSO (Ar-hexamethyldisiloxane) gas mixtures rapidly flowing across atmospheric-pressure, glow-type, single-filament dielectric barrier discharges is utilized to accomplish thin-film deposition via a purely ionic route. A comparison of thin-film volumes obtained from profilometry, on the one hand, and from the transferred charge, on the other hand, enables to evaluate the mass of the ions contributing to the film growth. For HMDSO fractions at the lower end of the studied range of molar fractions, 50 ppm, pentamethyldisiloxanyl cations (Me 3 SiOSiMe 2 + , PMDS +), generated from the monomer via Penning ionization by Ar(1s) species, are mainly responsible for film formation. For HMDSO fractions growing beyond 1,000 ppm, ionic oligomerization processes by reactions of PMDS + with HMDSO molecules result in a 2.5-fold increase of the average deposited ion mass.

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Section: +2mentioning

confidence: 99%

“…In literature, studies on SF‐DBDs have frequently been performed to gain fundamental knowledge about discharge mechanisms of filamentary DBDs, which is difficult to obtain from conventional DBDs with a large number of filaments distributed in space and time. [ 37–39 ]…”

Section: Introductionmentioning

confidence: 99%

Evidence of ionic film deposition from single‐filament dielectric barrier discharges in Ar–HMDSO mixtures

Bröcker

Perlick

Klages

2020

Plasma Processes & Polymers

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“…The burning voltage U b provides a measure for the (reduced) electric field within the DBD plasma and is highly relevant for assessing the plasma chemistry occurring within the reactor [11,13]. Along with large scale discharges, individual filaments have also been a subject of study, both experimentally [10,[14][15][16] and in modelling [9,10,17,18]. In this regard, electrical diagnostics are ideally suited to assess the relationship between large-scale multi-filament discharges and computer simulations of individual filaments.…”

Section: Introductionmentioning

confidence: 99%

Electrical Diagnostics of Dielectric Barrier Discharges

Peeters¹,

Butterworth²

2019

Atmospheric Pressure Plasma - From Diagnostics to Applications

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Atmospheric pressure dielectric barrier discharges (DBD) has many industrial applications and remains a focus of academic research. This chapter provides a thorough overview of electrical diagnostics for DBD, with a specific focus on charge-voltage measurement techniques. These methods are often underutilised in the existing scientific literature, despite the fact that they can provide useful insights into plasma behaviour. Both optimization of the electrical measurement setup and the interpretation of results are treated in-depth. The diagnostic techniques are discussed for a range of applications, from classic planar DBDs, to catalyst packed beds, plasma actuators, as well as techniques for measuring single microdischarges.

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“…The mixture of the first positive and HIR systems was detected in the work of Meiners et al, where the influence of various parameters on the discharge homogeneity was studied, however, only the filamentary regime was observed. The same applies for the work of Sewraj et al, where a mono‐filamentary DBD was analysed or for Šimek et al, who studied the HIR transition in a pulsed positive streamer. Moreover, to the best of our knowledge, the HIR system has not been yet analysed in a homogenous type of atmospheric discharge (e.g., similar to those described in refs.…”

Section: Introductionmentioning

confidence: 86%

Monitoring active species in an atmospheric pressure dielectric‐barrier discharge: Observation of the Herman‐infrared system

Annusova

Čermák

Rakovský

et al. 2017

Contributions to Plasma Physics

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An electronic and spectroscopic study of dielectric-barrier discharge transition from the Townsend to the filamentary mode is presented. The discharge is generated under pure nitrogen flow at atmospheric pressure in a reactor with parallel configuration of cylindrical electrodes covered with Al 2 O 3 dielectrics, applying a frequency of 4.85 kHz. The goal of the study was to find optimal conditions for observation of the Herman-infrared (HIR) transition (C" 5 Π + u → A' 5 Σ + g ) in a perspective to develop and test a ro-vibrational model for this quintet band. We have focused on finding the maximum emissivity of the HIR transition in the homogeneous discharge regime as it offers a more suitable source for calibrating the HIR model. Besides the capability of generating a spatially homogeneous type of radiation, our discharge design also allowed the observation of HIR without detectable interference from the first positive system of nitrogen which is not common for atmospheric pressure discharges. In the study, a time-resolved observation of the NO system, the second positive and the HIR nitrogen systems were performed and their emissivities analysed as a function of the discharge period and power. The optimum for the observation of the HIR system was found at 2.94 W (power density of 6 W/cm 3 ), corresponding to the Townsend discharge just before its transition to the filamentary one. KEYWORDSdielectric-barrier discharge, Herman-infrared system, nitrogen, optical emission spectroscopy, Townsend atmospheric discharge 1

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Electric and spectroscopic analysis of a pure nitrogen mono-filamentary dielectric barrier discharge (MF-DBD) at 760 Torr

Cited by 18 publications

References 37 publications

Evidence of ionic film deposition from single‐filament dielectric barrier discharges in Ar–HMDSO mixtures

Evidence of ionic film deposition from single‐filament dielectric barrier discharges in Ar–HMDSO mixtures

Electrical Diagnostics of Dielectric Barrier Discharges

Monitoring active species in an atmospheric pressure dielectric‐barrier discharge: Observation of the Herman‐infrared system

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