Numerical modelling of high-pressure glow discharges controlled by dielectric barrier

Rabehi, Ahmed; Gadri, R.B.; Ségur, P.; Massines, Françoise; Decomps, Philippe

doi:10.1109/ceidp.1994.592074

Cited by 19 publications

(12 citation statements)

References 2 publications

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“…There is however a remarkable distinction in the gap voltage profile and the amplitude of the current. The origin of these distinctions may be caused by the impurity of helium [5,17], in particular, by nitrogen. The impurity rate may be approximately 10 −3 %.…”

Section: Model and Elementary Processesmentioning

confidence: 99%

“…The better agreement was achieved in [5] by taking into account the small (0.5%) admixture of argon. The assumption of the presence of nitrogen and the usage of a detailed scheme of the elementary processes in He-N 2 mixture [17] allowed to decrease the density of the admixture down to 0.05%. However, in the experiments of [5] the impurity of helium did not exceed 10 −3 %.…”

Section: Introductionmentioning

confidence: 99%

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Modelling of the homogeneous barrier discharge in helium at atmospheric pressure

Golubovskiǐ

Maiorov

Behnke

2002

J. Phys. D: Appl. Phys.

373

220

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Numerical calculations of spatio-temporal characteristics of the homogeneous barrier discharge in helium are performed by means of a one-dimensional fluid model. The influence of the elementary processes on the discharge behaviour is studied by variation of the corresponding rate constants. The simulation and the analytical interpretation are carried out for two basic modes of the homogeneous barrier discharge, i.e. the Townsend and glow modes. The Townsend discharge is characterized by the absence of quasineutral plasma; several current peaks may occur during the half-cycle. The oscillations of the current are caused by a lag between the ion production nearby the anode and the subsequent ion–electron emission on the cathode. The specificity of the glow discharge is the development of a cathode region and a positive column during the breakdown, as well as the presence of quasineutral plasma in subsequent phases. The positive column occurs because the shielding of the external field by the plasma is not instantaneous. The dependence of the discharge behaviour on the external parameters, such as the amplitude and frequency of the applied voltage, discharge gap width, and thickness of dielectric barriers, is analysed. The mode of the discharge is governed mostly by the gap width and barrier thickness and depends weakly on the amplitude and frequency of the applied voltage. As the barriers are thin and the discharge gap is sufficiently wide, the glow mode occurs; otherwise, the discharge is Townsend.

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Section: Model and Elementary Processesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modelling of the homogeneous barrier discharge in helium at atmospheric pressure

Golubovskiǐ

Maiorov

Behnke

2002

J. Phys. D: Appl. Phys.

373

220

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show abstract

“…There are at least three domains in which some discharges observed at atmospheric pressure are design as atmospheric pressure glow discharge ͑APGD͒: partial discharges, 1,2 lasers, [3][4][5] and cold plasma processing. [6][7][8][9][10][11][12][13][14][15] Therefore, the features of discharges called APGD depend strongly on the domain of investigation. Partial discharge are normally pulse discharges.…”

Section: Introductionmentioning

confidence: 99%

Experimental and theoretical study of a glow discharge at atmospheric pressure controlled by dielectric barrier

Massines

Rabehi

Decomps

et al. 1998

Journal of Applied Physics

883

627

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The aim of this paper is to confirm the existence of atmospheric pressure dielectric controlled glow discharge and to describe its main behavior. Electrical measurements, short time exposure photographs, and numerical modeling were used to achieve this task. Experimental observations and numerical simulation are in good agreement. Therefore, the analysis of the calculated space and time variations of the electric field together with the ion and electron densities helps to explain the discharge mechanisms involved, showing the main role played by the electron as well as helium metastable density just before the discharge is turned on.

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“…3 a fast (few ns) ICCD image of a DBD in an air-helium mixture captures the creation of two filaments. These use a number of one and twodimensional simulations [5,8,[10][11][12][13][14]. 3.…”

Section: Dielectric Barrier Dischargesmentioning

confidence: 99%

Atmospheric Pressure Glow Discharges

Graham¹,

Nersisyan²

2006

AIP Conference Proceedings

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Articles you may be interested inTemporally, spatially, and spectrally resolved barrier discharge produced in trapped helium gas at atmospheric pressure Abstract. Their relative engineering simplicity, plasma uniformity and chemistry make Atmospheric Pressure Glow Discharges (APGD) very attractive for plasma processing applications. Here some of the basic characteristics of glow discharges are introduced. The basic dielectric barrier discharge and how it can be operated in a uniform glow rather filamentary mode is described. Electrical and laser-based measurements that throw light on the underlying physics of APGDs are presented, along with a model which seeks to explore the plasma chemistry of these discharges.

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Numerical modelling of high-pressure glow discharges controlled by dielectric barrier

Cited by 19 publications

References 2 publications

Modelling of the homogeneous barrier discharge in helium at atmospheric pressure

Modelling of the homogeneous barrier discharge in helium at atmospheric pressure

Experimental and theoretical study of a glow discharge at atmospheric pressure controlled by dielectric barrier

Atmospheric Pressure Glow Discharges

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