Visualization of a Spark Discharge Driven by a High-Voltage Pulse With Sub-ns Rise-Time at Atmospheric Pressure

Author

Huiskamp, T. ; HoÌˆft, Hans ; Kettlitz, Manfred ; Pemen, A.J.M.

Author_Institution

Dept. of Electr. Eng., Pulsed Power Technol., Eindhoven Univ. of Technol., Eindhoven, Netherlands

Volume

42

Issue

10

fYear

2014

fDate

Oct. 2014

Firstpage

2414

Lastpage

2415

Abstract

A spark discharge generated by a 5-ns highvoltage pulse of 21 kV with a rise-time of 200 ps in a 1-mm gap between half-sphere steel electrodes was investigated in N₂-O₂ gas mixtures at atmospheric pressure. We compared short exposure and long exposure ICCD images of the discharge, as well as single shot images and accumulated images. At high repetition rates more discharge channels form due to higher background ionization. The influence of the O₂ concentration between 0.1 and 10 vol% O₂ in N₂ is insignificant.

Keywords

ionisation; nitrogen; oxygen; plasma diagnostics; sparks; steel; N₂-O₂; background ionization; discharge channels; gas mixtures; half-sphere steel electrodes; high-voltage pulse; long exposure ICCD images; pressure 1 atm; repetition rates; short exposure ICCD images; single shot images; spark discharge visualization; time 5 ns; voltage 21 kV; Cameras; Discharges (electric); Electrodes; Fault location; Plasmas; Sparks; Atmospheric pressure plasmas; electric breakdown; pulsed power supplies; pulsed power supplies.;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2014.2321776

Filename

6817618