Statistical analysis of branching angles of streamer discharges on the liquid surface

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Abstract

The experimental investigation of atmospheric pressure streamer discharges on the water surface at two different polarities of voltage at the high-voltage electrode revealed several noteworthy findings. The discharge structure was photoregistered and subjected to statistical analysis. The results demonstrated that the discharges possess a complex structure comprising numerous branching channels. It was determined that the number of branching channels in discharges of negative polarity is approximately six times higher than the number of branching channels of positive polarity. Conversely, the mean branching angle of positive discharges is greater than that of negative polarity discharges. No branching angles exceeding 90° were observed, nor were any instances of intersection between different branches identified.

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About the authors

D. V. Vyalukh

Russian Federal Nuclear Center All-Russian Research Institute of Experimental Physics

Email: dubinov-ae@yandex.ru
Russian Federation, Sarov

V. A. Dekhtyar

Sarov Institute of Physics and Technology

Email: dubinov-ae@yandex.ru
Russian Federation, Sarov

A. E. Dubinov

Russian Federal Nuclear Center All-Russian Research Institute of Experimental Physics; Sarov Institute of Physics and Technology

Author for correspondence.
Email: dubinov-ae@yandex.ru
Russian Federation, Sarov; Sarov

I. L. Lvov

Russian Federal Nuclear Center All-Russian Research Institute of Experimental Physics

Email: dubinov-ae@yandex.ru
Russian Federation, Sarov

S. A. Sadovoy

Russian Federal Nuclear Center All-Russian Research Institute of Experimental Physics

Email: dubinov-ae@yandex.ru
Russian Federation, Sarov

L. A. Senilov

Russian Federal Nuclear Center All-Russian Research Institute of Experimental Physics

Email: dubinov-ae@yandex.ru
Russian Federation, Sarov

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Supplementary files

Supplementary Files
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2. Fig. 1. Installation diagram for generating streamer discharges on the water surface: 1 – ring grounded electrode; 2 – pin high–voltage electrode; 3 - dielectric vessel; 4 – spark gap.

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3. Fig. 2. Oscillogram of the discharge current.

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4. 3. Photo images of discharges: (a) with a negative voltage polarity on a high-voltage electrode; (b) with a positive polarity.

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5. Fig. 4. Fragment of Fig. 3a, showing the numbering of the branching points and the method of measuring the branching angle.

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6. 5. Histograms showing the number of branching points having an angle from the corresponding range: (a) with a negative voltage polarity on a high-voltage electrode; (b) with a positive polarity.

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