Spectroscopic Investigation of a Dielectric Barrier Discharge
| Autor: | James Menart, Scott Stanfield |
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| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | AIAA Journal. 52:991-997 |
| ISSN: | 1533-385X 0001-1452 |
| DOI: | 10.2514/1.j052402 |
| Popis: | Vibrational temperatures Tv of N2(C3Πu), reduced electric fields E/N, and relative number densities of N2(C3Πu) and N2+(B2Σu+) 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 N2(C3Πu) and N2+(B2Σu+), 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 E/N 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 N2+(B2Σu+) by ... |
| Databáze: | OpenAIRE |
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