Abstract
Improvements on the validation of a nonintrusive laser-based measurement technique
are presented. This new technique, called global rainbow thermometry (GRT), is
capable of determining the temperature and the size distributions of liquid droplets
dispersed in a liquid or gaseous bulk. We propose a new data inversion algorithm that
takes into account the whole rainbow pattern. Experimental validation of the GRT
technique is performed for a liquid-liquid suspension. We performed the validation by
comparing the measurements obtained with the GRT technique for the mean droplet
temperature and size with the results obtained with alternative techniques.
© 2004 Optical Society of America
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