Accurate measurement on thermophoresis of particulate matter under high temperature gradient

本文研制了一种利用微重力环境测量自由落体过程中高温梯度下的热湿速度的实验装置。反复进行实验，积累了足够的数据进行统计处理，与现有的实验相比，测量精度有了显著的提高。理论也得到了改进，用新理论预测的结果与实验结果吻合得很好。

Developed in this work is an experimental device for the measurement of the thermophoretic velocity under high temperature gradients by means of utilizing a micro-gravity environment during a free fall. Experiments are conducted repeatedly so that enough amounts of data are accumulated for statistical treatment, which is confirmed to enable notable improvement, in comparison with existing experiments, in the measurement accuracy. An improvement in the theory is also achieved ; the prediction by the new theory coincides satisfactorily with experimental results.