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本文介绍了一种测量固体材料热扩散系数的新方法——激光光热光束偏转方法,详细地讨论了加热光的光斑半径对测量结果的影响,实验测得了黄铜和石英玻璃的热扩散系数。
In this paper, a new method of measuring the thermal diffusivity of solid materials - laser beam deflection method is introduced in detail. The influence of spot radius of heating light on the measurement results is discussed in detail. The thermal diffusivity of brass and quartz glass .