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.
| Language | English |
|---|---|
| Article number | 065202 |
| Number of pages | 15 |
| Journal | Journal of Physics D: Applied Physics |
| Volume | 51 |
| Issue number | 6 |
| DOIs | |
| State | Published - 23 Jan 2018 |
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Keywords
- electric field
- emission spectroscopy
- helium plasma jet
- liquid target
- plasma-liquid interaction
- Schlieren imaging
- Stark polarization spectroscopy
Cite this
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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 journal › Article › Academic › peer-review
TY - JOUR
T1 - The effect of liquid target on a nonthermal plasma jet - Imaging, electric fields, visualization of gas flow and optical emission spectroscopy
AU - Kovačević,V.V.
AU - Sretenović,G.B.
AU - Slikboer,E.T.
AU - Guaitella,O.
AU - Sobota,A.
AU - Kuraica,M.M.
PY - 2018/1/23
Y1 - 2018/1/23
N2 - 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.
AB - 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.
KW - electric field
KW - emission spectroscopy
KW - helium plasma jet
KW - liquid target
KW - plasma-liquid interaction
KW - Schlieren imaging
KW - Stark polarization spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=85041026286&partnerID=8YFLogxK
U2 - 10.1088/1361-6463/aaa288
DO - 10.1088/1361-6463/aaa288
M3 - Article
VL - 51
JO - Journal of Physics D: Applied Physics
T2 - Journal of Physics D: Applied Physics
JF - Journal of Physics D: Applied Physics
SN - 0022-3727
IS - 6
M1 - 065202
ER -