Exploring the mechanisms leading to diffuse and filamentary modes in dielectric barrier discharges in N2 with N2O admixtures
Plasma Study
Plasma-kg
addresses
- Effects of nitrous oxide (N2O) in nitrogen (N2) on the development and morphology of sine-driven dielectric barrier discharges
- Exploring the mechanisms leading to diffuse and filamentary modes in dielectric barrier discharges in N2 with N2O admixtures Plasma Study
- Study of the underlying mechanisms causing the diffuse discharge characteristics
conductedBy
- Becker, Markus M. Person
- Brandenburg, Ronny Person
- Dap, Simon Person
- Höft, Hans Person
- Kettlitz, Manfred Person
- LAPLACE Laboratory
- Naudé, Nicolas Person
- Weltmann, Klaus-Dieter Person
consistsOf
describedIn
hasMedium
- H2O Medium
- N2 Medium
- N2/N2O gas mixtures Medium
- N2O Medium
- virtually pure N2 Medium
hasOutput
hasPlasmaSource
- Dielectric Barrier Discharge (DBD) Plasma Source
- Single-Filament DBD (Model) Plasma Source
- symmetric double-sided DBD arrangement Plasma Source
hasTopic
- APTD Research Topic
- Plasma Chemical Processes Research Topic
- basic research Application Field
- mode transition Research Topic
investigates
involves
usesConfiguration
- A symmetric double-sided DBD arrangement with half-spherical, alumina-covered metal electrodes with a gap width of 1 mm was used. The alumina-covered electrodes had a diameter of about 4 mm and a tip radius of about 2 mm. The thickness of the dielectric above the tip was about 0.5 mm. The electrodes were placed in a vacuum tight glass cell. A custom-built sinusoidal high-voltage (HV) power supply (push-pull generator with HV transformer) generating up to 14 kV pp at 10 kHz frequency (f_rep) was used for the operation of the DBDs.
- Configuration for Andor iStar DH734-18U-A3: spatial resolution ~2 µm; maximal temporal resolution 2 ns
- Configuration for Hamamatsu C5680-21C: spatial resolution ~2 µm; temporal resolution ~20 ps
- Configuration for custom-built sinusoidal HV power supply: voltage up to 14 kV pp; frequency 10 kHz
- Configuration for fluid-Poisson model: reaction kinetics scheme with ~50 heavy particle species and >520 reactions; secondary electron emission coefficient (N2(A) impact) 0.2; secondary electron emission coefficient (ion-induced) 0.02; initial condition of quasi-neutral state with an electron density of 10^3 cm^-3
- Configuration for gas medium: up to 10vol% N2O in N2 at atmospheric pressure; total gas flow 100 sccm
- Configuration for symmetric double-sided DBD arrangement: gap width 1 mm; electrodes diameter ~4 mm; electrodes tip radius ~2 mm; dielectric thickness ~0.5 mm; pressure 1 bar
usesDevice
- Andor iStar DH734-18U-A3 Diagnostic Device
- Hamamatsu C5680-21C Diagnostic Device
- MVP 020-3 AC, Pfeiffer Device
- MagneLab CT-F2.5 BNC Diagnostic Device
- Questar QM100 Diagnostic Device
- SGM 7.4, Zirox Diagnostic Device
- TSH261, Pfeiffer Device
- Tektronix DPO 7254C Diagnostic Device
- Tektronix P6015A Diagnostic Device
- custom-built sinusoidal high-voltage (HV) power supply Device
- gas cylinders Device
- mass flow controllers Device
- vacuum tight glass cell Device
usesMethod
- Electrical Measurements Diagnostic Method
- Fluid-Poisson Model Diagnostic Method
- ICCD Imaging Diagnostic Method
- current measurement Diagnostic Method
- fluid modelling Diagnostic Method
- streak camera imaging Diagnostic Method
- voltage measurement Diagnostic Method