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

V.V. Kovačević, G.B. Sretenović, E.T. Slikboer, O. Guaitella, A. Sobota, M.M. Kuraica

Research output: Contribution to journalArticleAcademicpeer-review

19 Citations (Scopus)

Abstract

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.

LanguageEnglish
Article number065202
Number of pages15
JournalJournal of Physics D: Applied Physics
Volume51
Issue number6
DOIs
StatePublished - 23 Jan 2018

Fingerprint

Optical emission spectroscopy
Plasma jets
optical emission spectroscopy
plasma jets
gas flow
Flow of gases
Visualization
Electric fields
Imaging techniques
electric fields
Liquids
liquids
liquid surfaces
ignition
Beam plasma interactions
Plasmas
jet nozzles
helium plasma
Ignition
gas composition

Keywords

  • electric field
  • emission spectroscopy
  • helium plasma jet
  • liquid target
  • plasma-liquid interaction
  • Schlieren imaging
  • Stark polarization spectroscopy

Cite this

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title = "The effect of liquid target on a nonthermal plasma jet - Imaging, electric fields, visualization of gas flow and optical emission spectroscopy",
abstract = "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.",
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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. / Kovačević, V.V.; Sretenović, G.B.; Slikboer, E.T.; Guaitella, O.; Sobota, A.; Kuraica, M.M.

In: Journal of Physics D: Applied Physics, Vol. 51, No. 6, 065202, 23.01.2018.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - Kovačević,V.V.

AU - Sretenović,G.B.

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AU - Guaitella,O.

AU - Sobota,A.

AU - Kuraica,M.M.

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