STRATEGIES FOR LASER-EXCITED FLUORESCENCE SPECTROSCOPY - MEASUREMENTSOF GAS-PHASE SPECIES DURING PARTICLE FORMATION

Characterization of gas phase species is of fundamental importance to a greater understanding of ps to particle conversion processes of inte rest to materials synthesis. This paper describes the use of Laser Exc ited Fluorescence as an in situ method for characterization of gas pha se species in a densely laden particle forming flow. The method provid es for non-invasive, high spatial resolution measurements in a high te mperature hostile environment. Examples of the application of the meth od will be described for the measurement of OH and SiO in a silica par ticle forming high temperature flow.