Variation in guided streamer propagation along a DBD plasma jet by tailoring the applied voltage waveform
| Autor: | Christophe Leys, Mikhail Gromov, Anton Nikiforov, Mikhail E. Pinchuk, Olga Stepanova |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Physics and Astronomy (miscellaneous) Plasma parameters Physics::Instrumentation and Detectors Atmospheric-pressure plasma 02 engineering and technology Streamer discharge 01 natural sciences Optical imaging Plasma diagnostics Optics Ionization 0103 physical sciences Waveform Plasma medicine Physics::Atomic Physics 010302 applied physics Jet (fluid) business.industry 021001 nanoscience & nanotechnology Plasma devices Physics and Astronomy 0210 nano-technology business Voltage |
| Zdroj: | APPLIED PHYSICS LETTERS |
| ISSN: | 0003-6951 1077-3118 |
| Popis: | Experimental data on the evolution of a helium atmospheric pressure plasma jet driven by two different voltage waveforms are presented. The characteristics of directed ionization waves (guided streamers) were compared for a sinusoidal voltage waveform with a frequency of 52 kHz and a voltage waveform that was formed via the superposition of 41.6 kHz bipolar square pulses and 300 kHz oscillations. With the sinusoidal voltage, two consecutive ionization waves were observed. With a special tailoring voltage, control of the guided streamer propagation in a stepwise mode was achieved. The observed second streamer and the second step of propagation could be regarded as a secondary ionization wave for both voltages. A change in the voltage waveform led to significant variations in the secondary ionization wave formation and streamer parameters. The voltage waveform enabled the number of ionization waves and their propagation to change, which provided the possibility of controlling the plasma parameters of the jet. |
| Databáze: | OpenAIRE |
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