Detection of OH Radicals Generated in Wire–Plate Pulsed Corona Discharge by LIF.

Hydroxyl (OH) radicals generated in wire–plate pulsed corona discharge (PCD) were detected by laser-induced fluorescence (LIF). In this paper, the 2-D distribution of OH radicals and the time-resolved development of the streamers in humidified nitrogen were recorded by an intensified charge-coupled device camera. The results indicate that the OH-LIF signals could not be detected when secondary streamer was absent in PCD with low input energy. Input energy, which varies with the configuration of wire–plate reactor and applied voltage, significantly affected the spatial distribution of OH radicals. [ABSTRACT FROM PUBLISHER]