Plasma-kg

addresses

• determination of the origin of the striations 
• investigation of the formation mechanisms of the striations along the discharge channel 

conductedBy

• Becker, Markus M.  Person
• Hoder, Tomáš   Person
• Höft, Hans   Person
• INP Greifswald  Institute
• Jovanović, Aleksandar   Person
• Leibniz Institute for Plasma Science and Technology (INP)  Institute
• Loffhagen, Detlef   Person
• MUNI SCI PDM  Department

hasMedium

• Ar  Medium

hasOutput

• Formation mechanisms of striations in a filamentary dielectric barrier discharge in atmospheric pressure argon - dataset  Dataset

hasPlasmaSource

• Single-Filament DBD (Model)  Plasma Source

hasTopic

• Plasma Chemical Processes  Research Topic
• fluid modelling  Research Topic
• formation mechanisms of striations  Research Topic
• repetitive ionisation waves  Research Topic
• stepwise ionisation  Research Topic
• striations  Research Topic

investigates

• disturbance of the spatial distribution of charge carriers 
• ion-induced secondary electron emission 
• ionisation of excimers 
• partial reflection of the particles 
• stepwise ionisation of metastable argon atoms 
• thermal flux 

involves

• filamentary dielectric barrier discharge  Plasma
• streamer breakdown phase  Plasma
• streamer discharge  Plasma
• transient glow phase  Plasma

usesConfiguration

• The modelling was performed for the DBD in an asymmetric arrangement with a 1.5 mm gap, electrode radius of 2 mm and 0.5 mm thick dielectric (alumina, relative permittivity 9) covering grounded electrode, driven by sinusoidal voltage (voltage amplitude of 1.3 kV and frequency of 60 kHz, corresponding to a period of T = 16.67 microseconds). 
• asymmetric arrangement with 1.5 mm gap, electrode radius of 2 mm, 0.5 mm thick dielectric (alumina, relative permittivity 9) covering grounded electrode, driven by sinusoidal voltage (voltage amplitude of 1.3 kV and frequency of 60 kHz) 
• cylindrical geometry; Finite element method; Linear Lagrange elements for particle balance equations, quadratic Lagrange elements for Poisson equation, linear discontinuous Lagrange elements for the surface charge density balance equation; BDF time-stepping with automatically adapted time-step size and BDF order (1 to 2); Fully coupled constant Newton solver with PARDISO; Tolerance in range from 0.0001 to 0.001; Manual remeshing with average 500 000 elements and about 3 million degrees of freedom 

usesMaterialEntity

• COMSOL Multiphysics® v. 5.6  Material Entity
• LiveLink™ for MATLAB®  Material Entity
• Matplotlib  Material Entity
• python3  Material Entity

usesMethod

• Backward differentiation formula (BDF)  Diagnostic Method
• Finite element method  Diagnostic Method
• Fluid-Poisson Model  Diagnostic Method
• Plasma Chemical Model  Diagnostic Method
• direct linear solver (PARDISO)  Method
• fully coupled Newton solver  Diagnostic Method
• time-dependent and spatially two-dimensional fluid-Poisson model  Diagnostic Method