INP

Leibniz Institute for Plasma Science and Technology
Felix-Hausdorff-Str. 2
17489 Greifswald
GERMANY

https://www.inp-greifswald.de/en/
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The Leibniz Institute for Plasma Science and Technology (INP) is the largest non-university institute in the field of low temperature plasmas, their basics and technical applications in Europe. The institute carries out research and development from idea to prototype. The topics focus on the needs of the market. At present, plasmas for materials and energy as well as for environment and health are the focus of interest.

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Influence of surface parameters on dielectric-barrier discharges in argon at subatmospheric pressure - dataset

The provided data describe the discharge current in DBD obtained by fluid modelling using different values of for the secondary electron emission coefficient γ and and the relative permittivity of the dielectric barrier εr in comparison with the measured current at a pressure of 100 mbar and an applied voltage amplitude of 1.8 kV. Furthermore, the dissipated power obtained by model calculations for different values of γ and εr together with the measured power in dependence on the pressure is given.

FieldValue
Group
Authors
Release Date
2020-11-30
Identifier
57853d37-3868-4ded-9be2-b34e10879743
Permanent Identifier (DOI)
Permanent Identifier (URI)
Is supplementing
Plasma Source Name
Plasma Source Application
Plasma Source Specification
Plasma Source Properties
The compact DBD reactor implements the Venturi-DBD concept where both electrodes are covered by glass dielectrics each with a thickness of ∆ = 1 mm, which are separated by the gap width d = 3 mm. The electrodes are made of copper and have rectangular shape with a length of 6.6 cm and width of 1.1 cm and are 2 mm thick. Plasma source is operated sinusoidally at a frequency of 24 kHz with applied voltages from 1.8 to 3.4 kV and pressures between 100 and 650 mbar.
Plasma Medium Name
Plasma Medium Properties
Pressures: 100, 300, 500 and 650 mbar; Gas temperature: 300K
Plasma Diagnostics Name
Plasma Diagnostics Properties

Fluid-Poisson model:
The size of thesmallest element in the plasma domain is 0.15 um. The size of the time step is adaptively determined keeping the relative error of the solver below the tolerance of 0.0001.

Electrical measurements:
Bandwidth of voltage proble: 75 MHz; bandwidth of current probe: 120 MHz

Plasma Diagnostics Procedure

Fluid-Poisson model:
A time-dependent, spatially one-dimensional fluid model was applied for the theoretical description and analysis of the investigated DBD. The fluid model includes balance equations for the particle number densities of electrons and several neutral and charged heavy particles, as well as for the electron energy density, coupled with Poisson's equation. Flux boundary conditions taking into account partial reflection of particles were employed for electrons and heavy particles. In addition, the emission of secondary electrons caused by positive ions impinging onto the surface was considered for the electron. Also, the accumulation of surface charges on the dielectrics was taken into account. The model equations were solved fully coupled by means of the finite element method using the software COMSOL Multiphysics.

Electrical measurements:
The electrode voltage was monitored by means of the high-voltage probe P6015A, Tektronix Inc., USA. The current probe TCP0030, Tektronix Inc., USA was used to measure the electrical current. Both the voltage and the current probe were connected to an 1 GHz digital oscilloscope with four channels (DPO4104, Tektronix Inc., USA).

The measured voltage signals at the powered electrode was used as input for the modelling studies.

Language
English
License
Public Access Level
Public
Contact Name
Stankov, Marjan
Contact Email

Data and Resources