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 language | English (US) |
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Article number | 121502 |
Journal | Applied Physics Letters |
Volume | 99 |
Issue number | 12 |
DOIs | |
State | Published - Sep 19 2011 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)