Experimental study of the hydrodynamic expansion following a nanosecond repetitively pulsed discharge in air

Da A. Xu*, Deanna A. Lacoste, Diane L. Rusterholtz, Paul Quentin Elias, Gabi D. Stancu, Christophe O. Laux

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

Abstract

We report on an experimental study of the hydrodynamic expansion following a nanosecond repetitively pulsed (NRP) discharge in atmospheric pressure air preheated up to 1000 K. Single-shot schlieren images starting from 50 ns after the discharge were recorded to show the shock-wave propagation and the expansion of the heated gas channel. The temporal evolution of the gas temperature behind the shock-front is estimated from the measured shock-wave velocity by using the Rankine-Hugoniot relationships. The results show that a gas temperature increase of up to 1100 K can be observed 50 ns after the nanosecond pulse.

Original languageEnglish (US)
Article number121502
JournalApplied Physics Letters
Volume99
Issue number12
DOIs
StatePublished - Sep 19 2011

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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