Electric field measurement in the dielectric tube of helium atmospheric pressure plasma jet

G.B. Sretenović, O. Guaitella, A. Sobota, I.B. Krstić, V.V. Kovačević, B.M. Obradović, M.M. Kuraica

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6 Citations (Scopus)

Abstract

The results of the electric field measurements in the capillary of the helium plasma jet are presented in this article. Distributions of the electric field for the streamers are determined for different gas flow rates. It is found that electric field strength in front of the ionization wave decreases as it approaches to the exit of the tube. The values obtained under presented experimental conditions are in the range of 5-11 kV/cm. It was found that the increase in gas flow above 1500 SCCM could induce substantial changes in the discharge operation. This is reflected through the formation of the brighter discharge region and appearance of the electric field maxima. Furthermore, using the measured values of the electric field strength in the streamer head, it was possible to estimate electron densities in the streamer channel. Maximal density of 4 × 10 11 cm −3 is obtained in the vicinity of the grounded ring electrode. Similar behaviors of the electron density distributions to the distributions of the electric field strength are found under the studied experimental conditions.
LanguageEnglish
Article number123304
JournalJournal of Applied Physics
Volume121
Issue number12
DOIs
StatePublished - 28 Mar 2017

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electric field strength
plasma jets
atmospheric pressure
helium
tubes
gas flow
electric fields
helium plasma
density distribution
flow velocity
ionization
electrodes
rings
estimates

Cite this

Sretenović, G. B., Guaitella, O., Sobota, A., Krstić, I. B., Kovačević, V. V., Obradović, B. M., & Kuraica, M. M. (2017). Electric field measurement in the dielectric tube of helium atmospheric pressure plasma jet. Journal of Applied Physics, 121(12), [123304]. DOI: 10.1063/1.4979310
Sretenović, G.B. ; Guaitella, O. ; Sobota, A. ; Krstić, I.B. ; Kovačević, V.V. ; Obradović, B.M. ; Kuraica, M.M./ Electric field measurement in the dielectric tube of helium atmospheric pressure plasma jet. In: Journal of Applied Physics. 2017 ; Vol. 121, No. 12.
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Sretenović, GB, Guaitella, O, Sobota, A, Krstić, IB, Kovačević, VV, Obradović, BM & Kuraica, MM 2017, 'Electric field measurement in the dielectric tube of helium atmospheric pressure plasma jet' Journal of Applied Physics, vol. 121, no. 12, 123304. DOI: 10.1063/1.4979310

Electric field measurement in the dielectric tube of helium atmospheric pressure plasma jet. / Sretenović, G.B.; Guaitella, O.; Sobota, A.; Krstić, I.B.; Kovačević, V.V.; Obradović, B.M.; Kuraica, M.M.

In: Journal of Applied Physics, Vol. 121, No. 12, 123304, 28.03.2017.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - Guaitella,O.

AU - Sobota,A.

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AU - Kovačević,V.V.

AU - Obradović,B.M.

AU - Kuraica,M.M.

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N2 - The results of the electric field measurements in the capillary of the helium plasma jet are presented in this article. Distributions of the electric field for the streamers are determined for different gas flow rates. It is found that electric field strength in front of the ionization wave decreases as it approaches to the exit of the tube. The values obtained under presented experimental conditions are in the range of 5-11 kV/cm. It was found that the increase in gas flow above 1500 SCCM could induce substantial changes in the discharge operation. This is reflected through the formation of the brighter discharge region and appearance of the electric field maxima. Furthermore, using the measured values of the electric field strength in the streamer head, it was possible to estimate electron densities in the streamer channel. Maximal density of 4 × 10 11 cm −3 is obtained in the vicinity of the grounded ring electrode. Similar behaviors of the electron density distributions to the distributions of the electric field strength are found under the studied experimental conditions.

AB - The results of the electric field measurements in the capillary of the helium plasma jet are presented in this article. Distributions of the electric field for the streamers are determined for different gas flow rates. It is found that electric field strength in front of the ionization wave decreases as it approaches to the exit of the tube. The values obtained under presented experimental conditions are in the range of 5-11 kV/cm. It was found that the increase in gas flow above 1500 SCCM could induce substantial changes in the discharge operation. This is reflected through the formation of the brighter discharge region and appearance of the electric field maxima. Furthermore, using the measured values of the electric field strength in the streamer head, it was possible to estimate electron densities in the streamer channel. Maximal density of 4 × 10 11 cm −3 is obtained in the vicinity of the grounded ring electrode. Similar behaviors of the electron density distributions to the distributions of the electric field strength are found under the studied experimental conditions.

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Sretenović GB, Guaitella O, Sobota A, Krstić IB, Kovačević VV, Obradović BM et al. Electric field measurement in the dielectric tube of helium atmospheric pressure plasma jet. Journal of Applied Physics. 2017 Mar 28;121(12). 123304. Available from, DOI: 10.1063/1.4979310