{ "help": "Return the metadata of a dataset (package) and its resources. :param id: the id or name of the dataset :type id: string", "success": true, "result": { "id": "f1afd462-e16e-4a7c-98aa-f457927e0d5d", "url": "https://www.inptdat.de/node/585", "source": { "name": "Venturi-DBD, HF plasma jet, \u00b5APPJ", "application": "medical applications, surface treatment", "specification": "AC, low frequency, high frequency, medium pressure, atmospheric pressure, non-thermal", "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.

\n

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 \u2206 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.

\n

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.

\n" }, "medium": { "name": "Ar", "properties": "

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

\n" }, "target": [], "diagnostics": { "name": "current measurement, laser atom absorption spectroscopy (LAAS), phase-resolved optical emission spectroscopy (PROES), fluid-Poisson model", "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 \u20132p9 ) transition. The PROES setup used in the experimental studies includes a CCD camera (PicoStar HR12, LaVision GmbH, Germany) with a resolution of 520 \u00d7 520 pixels connected to an imaging spectrograph (Shamrock 750, Andor, United Kingdom) with a width of the entrance slit of 200 \u00b5m and a grating constant of 600 mm^{\u22121} .

\n

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).

\n

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.

\n

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.

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