Filamentary nanosecond surface dielectric barrier discharge. Plasma properties in the filaments
Abstract
Streamer-to-filament transition is a general feature of nanosecond discharges at elevated pressure. The transition is observed in different discharges by different groups: in the nanosecond surface dielectric barrier discharges (nSDBDs) in a single shot regime at high pressure (2-15 bar), in the point-to-point or point-to-plane open electrodes discharges at high repetitive frequency (so-called nanosecond repetitive pulsed discharges, NRPDs) at atmospherics pressure. The present paper contains experimental analysis of plasma properties in the filamentary nSDBD: the electrical current, the specific deposited energy, the electron density and the electron temperature were measured for a wide range of pressures and voltages. A model explaining plasma properties in filamentary nanosecond discharges and the role of excited species in streamer-to-filament transition is suggested and discussed.
- Publication:
-
Plasma Sources Science Technology
- Pub Date:
- June 2019
- DOI:
- 10.1088/1361-6595/ab2230
- Bibcode:
- 2019PSST...28f5013S
- Keywords:
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- filamentary discharge;
- non-equilibrium plasma;
- nanosecond constriction;
- nanosecond surface dielectric barrier discharge