Abstract
Summary form only given, as follows. Laser induced fluorescence (LIF) spectroscopy is used to study the temporal and spatial evolution of OH radicals in atmospheric pressure dielectric-barrier-discharge in air. A Nd:YAG pumped dye laser with wavelength doubler is used to generate the excitation wavelength in the 282 nm range. The laser is tuned to the Q(0,0) resonance of OH and a broadband detection is done of the Q(0,1) manifold. An image intensified CCD camera is used to record the fluorescence along with a narrow-band spectral filter. The discharge is operated at atmospheric pressure in air. The discharge configuration is planer with a single dielectric inserted between electrodes. Measurements of OH concentration with respect to the excitation voltage will be reported. Also spatial measurements of OH concentration in the gap will be reported.
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