High-speed photography of long laboratory sparks

P. Kochkin, A.P.J. Deursen, van

Research output: Contribution to conferenceOtherAcademic

Abstract

We represent first detailed high-speed photographic observations of the long laboratory spark development process in our laboratory. Pictures obtained simultaneously with voltage, currents and X-rays measurements. Earlier, we showed that near-cathode area are responsible for X-ray generation during discharge development. Signal from X-ray detectors was registered in a good coincidence with high frequency cathode current oscillations in case of positive and jumps in case of negative discharges. Also, we obtained spectra of the X-ray emission. On this base, we made several assumption concerning the energy composition and nature of the X-rays, emitted from the long laboratory sparks and atmospheric discharges at all. In this work we used a fast Picos4 camera with exposure time down to 200ps. We obtained the pictures of near-cathode area and full-length sparks up to 1.5 meter. Pictures of positive and negative corona, streamer/leader processes and other poorly investigated phenomena are represented.
Original languageEnglish
Publication statusPublished - 2012
Event24th NNV Symposium on Plasma Physics and Radiation Technology, March 6-7, 2012, Lunteren, The Netherlands - De Werelt, Lunteren, Netherlands
Duration: 6 Mar 20127 Mar 2012

Conference

Conference24th NNV Symposium on Plasma Physics and Radiation Technology, March 6-7, 2012, Lunteren, The Netherlands
Country/TerritoryNetherlands
CityLunteren
Period6/03/127/03/12
Other

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