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Looking into a plasma loudspeaker

Sutton, Yvonne; Moore, John; Sharp, David and Braithwaite, Nicholas St.J (2011). Looking into a plasma loudspeaker. IEEE Transactions on Plasma Science, 39(11) pp. 2146–2147.

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A 325-kHz atmospheric discharge can be modulated at audio frequencies so that it acts as a loudspeaker by direct electroacoustic coupling, without any electromechanical components. In exploring the details of the mechanism, it has been useful to visualize the heated gas within and around the discharge plume using Schlieren techniques. This has enabled a 2-D reconstruction of the translational temperature of the neutral gas (up to 2500 K) that complements spectroscopic measurements of rotational and vibrational temperatures (up to 2700 K) in the luminous region.

Item Type: Journal Article
Copyright Holders: 2011 IEEE
ISSN: 0093-3813
Keywords: acoustic transducers; atmospheric-pressure plasma; loudspeakers; plasma applications
Academic Unit/Department: Mathematics, Computing and Technology > Engineering & Innovation
Science > Physical Sciences
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID: 30442
Depositing User: David Sharp
Date Deposited: 09 Dec 2011 11:04
Last Modified: 24 Nov 2014 11:28
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