Schlieren imaging of shock-wave formation induced by ultrafast heating of a nanosecond repetitively pulsed discharge in air

Da A. Xu*, Deanna Lacoste, Christophe O. Laux

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

We present schlieren images of the hydrodynamic expansion following a nanosecond repetitively pulsed discharge in atmospheric pressure air at room temperature. The discharge is created by voltage pulses of amplitude 7.5 kV, duration 10 ns, applied at a frequency of 1 kHz between two pin electrodes. The electrical energy of each pulse is of the order of 1 mJ. We recorded phase-locked schlieren images starting from a few nanoseconds after the discharge. The time-resolved images show the expansion of the heated gas channel from 50 ns and the shock-wave propagation starting at 0.5 μs.

Original languageEnglish (US)
Article number6777296
Pages (from-to)2350-2351
Number of pages2
JournalIEEE Transactions on Plasma Science
Volume42
Issue number10
DOIs
StatePublished - Oct 1 2014

Keywords

  • Nanosecond discharges
  • ultrafast heating

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

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