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The effect of liquid target on a nonthermal plasma jet-imaging, electric fields, visualization of gas flow and optical emission spectroscopy

Kova evi, Vesna V ; Sretenovi, Goran B ; Slikboer, Elmar ; Guaitella, Olivier ; Sobota, Ana ; Kuraica, Milorad M

Journal of physics. D, Applied physics, 2018-01, Vol.51 (6), p.65202 [Periódico revisado por pares]

IOP Publishing

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  • Título:
    The effect of liquid target on a nonthermal plasma jet-imaging, electric fields, visualization of gas flow and optical emission spectroscopy
  • Autor: Kova evi, Vesna V ; Sretenovi, Goran B ; Slikboer, Elmar ; Guaitella, Olivier ; Sobota, Ana ; Kuraica, Milorad M
  • Assuntos: electric field ; emission spectroscopy ; helium plasma jet ; liquid target ; Physics ; Plasma Physics ; plasma-liquid interaction ; Schlieren imaging ; Stark polarization spectroscopy
  • É parte de: Journal of physics. D, Applied physics, 2018-01, Vol.51 (6), p.65202
  • Notas: JPhysD-115079.R2
  • Descrição: The article describes the complex study of the interaction of a helium plasma jet with distilled water and saline. The discharge development, spatial distribution of the excited species, electric field measurement results and the results of the Schlieren imaging are presented. The results of the experiments showed that the plasma-liquid interaction could be prolonged with the proper choice of the gas composition between the jet nozzle and the target. This depends on the gas flow and the target distance. Increased conductivity of the liquid does not affect the discharge properties significantly. An increase of the gas flow enables an extension of the plasma duration on the liquid surface up to 10 µs, but with a moderate electric field strength in the ionization wave. In contrast, there is a significant enhancement of the electric field on the liquid surface, up to 30 kV cm−1 for low flows, but with a shorter time of the overall plasma liquid interaction. Ignition of the plasma jet induces a gas flow modification and may cause turbulences in the gas flow. A significant influence of the plasma jet causing a mixing in the liquid is also recorded and it is found that the plasma jet ignition changes the direction of the liquid circulation.
  • Editor: IOP Publishing
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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