Investigation of Spark Discharge Dynamics in an Air-Filled Point–Plane Gap by Shadow Photography
- Authors: Almazova K.I.1, Belonogov A.N.1, Borovkov V.V.1, Gorelov E.V.1, Morozov I.V.1, Tren’kin A.A.1, Kharitonov S.Y.1
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Affiliations:
- Russian Federal Nuclear Center, All-Russian Research Institute of Experimental Physics
- Issue: Vol 64, No 1 (2019)
- Pages: 61-63
- Section: Plasma
- URL: https://journals.rcsi.science/1063-7842/article/view/202658
- DOI: https://doi.org/10.1134/S1063784219010043
- ID: 202658
Cite item
Abstract
The microchannel structure of a spark discharge in a 1.5-mm-long point–plane gap has been studied by the method of shadow photography. The discharge dynamics (propagation of microchannels from the point into the discharge gap, branching and expansion of the microchannels, formation of a joint front of the spark’s shock wave and its motion) has been observed over a time from several nanoseconds to several hundred nanoseconds. Objects of a half-ring shape have been discovered. They have been identified as semispherical shock waves resulting from the formation of microcraters near sites where the microchannels touch the plane electrode.
About the authors
K. I. Almazova
Russian Federal Nuclear Center, All-Russian Research Institute of Experimental Physics
Email: trenkin@ntc.vniief.ru
Russian Federation, Sarov, 607190
A. N. Belonogov
Russian Federal Nuclear Center, All-Russian Research Institute of Experimental Physics
Email: trenkin@ntc.vniief.ru
Russian Federation, Sarov, 607190
V. V. Borovkov
Russian Federal Nuclear Center, All-Russian Research Institute of Experimental Physics
Email: trenkin@ntc.vniief.ru
Russian Federation, Sarov, 607190
E. V. Gorelov
Russian Federal Nuclear Center, All-Russian Research Institute of Experimental Physics
Email: trenkin@ntc.vniief.ru
Russian Federation, Sarov, 607190
I. V. Morozov
Russian Federal Nuclear Center, All-Russian Research Institute of Experimental Physics
Email: trenkin@ntc.vniief.ru
Russian Federation, Sarov, 607190
A. A. Tren’kin
Russian Federal Nuclear Center, All-Russian Research Institute of Experimental Physics
Author for correspondence.
Email: trenkin@ntc.vniief.ru
Russian Federation, Sarov, 607190
S. Yu. Kharitonov
Russian Federal Nuclear Center, All-Russian Research Institute of Experimental Physics
Email: trenkin@ntc.vniief.ru
Russian Federation, Sarov, 607190