Leibniz Institute for Plasma Science and Technology
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17489 Greifswald
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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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Extended reaction kinetics model for non-thermal argon plasmas and its test against experimental data - Dataset

Modelling results obtained using an extended reaction kinetics model (RKM) suitable for the analysis of weakly ionised, non-thermal argon plasmas with gas temperatures around 300K at sub-atmospheric and atmospheric pressures are presented. Modelling was performed by means of a time- and space-dependent fluid model for two different dielectric barrier discharge configurations as well as for a micro-scaled atmospheric-pressure plasma jet setup. The results are also compared with measurements, as well as with modelling data obtained by use of a previously established 15-species RKM.

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Plasma Source Name
Plasma Source Application
Plasma Source Specification
Plasma Source Properties

Venturi-DBD: DBD cell consists of two copper electrodes, both covered by 1 mm thick quartz dielectrics. The distance between the dielectric surfaces is d = 3 mm. The electrodes have rectangular shape with a length of 6.6 cm and width of 1.1 cm and provide the discharge area A = 7.62 cm^2 . The DBD is enclosed by a frame made of poly(methyl methacrylate) with quartz side panels, which make the discharge accessible for optical measurements. The investigations were conducted for the gas pressure of 300 mbar and applied sinusoidal voltage with an amplitude of 1.5 kV and a frequency of 24 kHz.

Plane-parallel DBD plasma source: The plane-parallel discharge configuration with rectangular steel mesh electrodes is 10 mm long (in gas flow direction) and 80 mm wide. Dielectric layers made of borofloat glass with a thickness ∆ of 2 mm are glued onto the electrodes. The gas gap d is 1 mm. The discharges were driven by a sinusoidal voltage with an amplitude of 4 kV and a frequency of 86.2 kHz at atmospheric pressure.

Micro-scaled atmospheric-pressure plasma jet: This plasma source consists of two parallel stainless steel electrodes covered with quartz glass windows that allow access for optical measurements. The electrodes are 20 mm long and 1 mm wide resulting in a discharge area A of 20 mm^2 . The gap d is 1.3 mm so the embedded discharge channel has the volume V = 26 mm ^3 . The plasma source was operated at the applied powers of 0.6 W and 1.3 W and the frequency f = 27.12 MHz.

Plasma Medium Name
Plasma Medium Properties

Ar gas at a temperature of 300 K and with a purity of 99.999 and 99.9999 %.

Plasma Diagnostics Name
Plasma Diagnostics Properties

Venturi-DBD: The measurements of the applied voltage and electrical current were performed by means of a 75 MHZ high-voltage probe (P6015A, Tektronix Inc., USA) and a current probe (TCP0030, Tektronix Inc., USA), respectively. A laser atom absorption spectroscopy (LAAS) system (EasyLAAS, neoplas control GmbH, Germany) with a 200 MHz photodetector (HCA-S, Femto, Germany) was used for the time-dependent absorption measurements at the wavelength of 811.53 nm, which corresponds to the Ar(1s5 –2p9 ) transition. The PROES setup used in the experimental studies includes a CCD camera (PicoStar HR12, LaVision GmbH, Germany) with a resolution of 520 × 520 pixels connected to an imaging spectrograph (Shamrock 750, Andor, United Kingdom) with a width of the entrance slit of 200 µm and a grating constant of 600 mm^{−1} .

Plane-parallel DBD plasma source: Two independent approaches were used to measure the discharge, one considering precision resistor R in the circuit and another one using a capacitor C. All measured signals were monitored by a digital oscilloscope (MDO3052, Tektronix, Beaverton, OR, USA, 500 MHz bandwidth).

Micro-scaled atmospheric-pressure plasma jet: PROES measurements of the spatiotemporal evolution of the plasma emission at 811.53 nm are conducted similarly as in the case of the Venturi-DBD system.

Modelling: The modelling studies were performed by means of a time-dependent, spatially one-dimensional fluid model based on a hydrodynamic description of the plasma, where the spatial variation takes place along the x-axis. An extended reaction kinetics model (RKM) considering 23 different species, as well as a simpler one with 15 species, were used for the modelling.

Public Access Level
Contact Name
Marjan Stankov
Contact Email

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