Abstract
A measurement technique for simultaneously obtaining the size, velocity and temperature of particles entrained in thermal plasma jets is described. Particle size and velocity are obtained from a combination laser sizing system and laser Doppler velocimeter (LDV). The particle temperature is determined by two-colour pyrometry and the data rate is a measure of relative particle number density. Since particle size, velocity and temperature are measured simultaneously, cold, solid particles or unmelts are identified and their relative number density can be quantified. Typical data are presented.
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