Vibrational temperatures of , reduced electric fields , and relative number densities of and have been measured for the positive and negative voltage half-cycles of a surface dielectric barrier discharge (SDBD) using optical emission spectroscopy. The measurements were performed for a sinusoidally driven SDBD having amplitudes of 4450 and 5900 V and a frequency of 5000 Hz. The relative number density profiles of and , as a function of voltage, show the difference in discharge structure of the two voltage half-cycles, as well as a transition in discharge structure during the negative voltage half-cycle. The transition in discharge structure was also evident in the results. The transition in discharge structure occurred by increasing the applied voltage, resulting in the presence of weak and strong tufts at 4450 and 5900 V, respectively. In particular, the presence of strong tufts resulted in a localized enhancement in the production of by a factor of 6 and in by a factor of 1.8, as well as an increase in the by a factor of 1.6, within the electrode gap.
Spectroscopic Investigation of a Dielectric Barrier Discharge
AIAA Journal ; 52 , 5 ; 991-997
2014-03-12
7 pages
Article (Journal)
Electronic Resource
English
Spectroscopic Investigation of a Dielectric Barrier Discharge
Online Contents | 2014
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