Abstract
The gas temperature of a tungsten electrothermal atomizer (WETA-82) has been studied both theoretically and experimentally. Optical pyrometry was used to determine the surface temperature of the tungsten tube atomizer. The model proposed in an earlier paper predicts that the rate of increase of the predicted weighted-average gas temperature will be slower than that of the predicted surface temperature during the first few ms of the heating cycle for all the heating rates considered. However, the experimental results show that the rate of increase in the gas temperatures follows the surface temperature of the atomizer. The above-mentioned model also predicts a large temperature gradient between the gas and the surface temperature of the atomizer for the final steady-state temperature. However, the experimentally determined gradient between the temperature of the gas and the atomizer surface was smaller than that predicted.
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