Effects of Synchronization of Laser Induced Fluorescence and Corona Induced Fluorescence in a Pulsed Corona Reactor

Author

Hu, Xudong ; Legowski, Stanislaw F. ; Garikipati, S. V B Janardhan ; Zhao, Gui-Bing ; Radosz, Maciej

Author_Institution

Dept. of Chem. & Pet. Eng., Univ. of Wyoming, Laramie, WY, USA

Volume

33

Issue

4

fYear

2005

Firstpage

1332

Lastpage

1345

Abstract

Corona-induced fluorescence (CIF) of nitric oxide (NO) reveals that $NO( A^2 \\Sigma ^+)$ is primarily excited through $N_2 ( A^3 \\Sigma _ u ^+)$ produced in a pulsed corona rector (PCR). The charge voltage in PCR, the time delay of the high-voltage pulse applied to the reactor, and its time jitter vary from gas composition to gas composition. This is because the reactor electric equivalent resistance in an OFF state has different values for different gas components. The PCR pulse jitter, typically a few tenths of a microsecond, for the same gas composition, varies with the frequency of high-voltage pulses due to changes in feed composition. A precise time synchronization of CIF with the laser induced fluorescence (LIF), the intensified charge-coupled device (ICCD) detector and the PCR pulse reveals that NO molecules stay in the vibrational levels of the ground state for about 700 $\\mu s$ .

Keywords

corona; fluorescence; nitrogen compounds; plasma chemistry; plasma diagnostics; plasma sources; NO; corona induced fluorescence; feed composition; gas composition; ground state; intensified charge-coupled device detector; laser induced fluorescence; nitric oxide; pulse jitter; pulsed corona reactor; reactor electric equivalent resistance; time synchronization; vibrational levels; Corona; Delay effects; Electric resistance; Fluorescence; Frequency synchronization; Inductors; Jitter; Laser excitation; Optical pulses; Voltage; electrical discharge; laser induced fluorescence (LIF); pulsed corona reactor;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2005.851968

Filename

1495581