【摘要】 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。更多还原

【Abstract】 In this paper,a new approach measuring the thermal diffusivity of solid,laser pho-tothermal optical beam deflection(LPTOBD)method is introduced,the influence of spot’s radiusof heated beam on measurement’s result is discussed in detail.The thermal diffusivitys of brassand quartz are measured experimentally.更多还原