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讨论了在利用辐射法测量金属的冲击波温度时，金属基板（ 靶板） 与金属镀膜样品之间的间隙对“金属镀膜样品／ 窗口”界面上的温度的影响及其对冲击波温度测量的意义。“金属基板／间隙／ 镀膜样品／ 透明窗口”这样一种由四层介质组成的典型的靶样品装置被广泛用于金属材料的冲击波温度测量中。利用拉普拉斯变换对上述“四层介质模型”在经受冲击波压缩作用时的热传导方程进行求解，结果表明：当冲击波扫过金属镀膜样品与窗口之间的界面（“样品／ 窗口”界面）后，该界面温度的弛豫过程与间隙的尺度密切相关：当间隙的厚度与镀膜层的厚度相近时，“样品／窗口”界面的台阶形温度剖面的起始部分会出现一个尖峰，尖峰的高度与宽度与间隙的尺度相关；如果金属镀膜层的厚度远大于间隙的厚度，则该温度剖面为一平顶台阶。
The influence of the gap between the metal substrate (target) and the metal coating on the temperature at the interface of “metal coating sample / window” and its significance to the shock wave temperature measurement are discussed when using the radiation method to measure the shock wave temperature of the metal. A typical target-sample device consisting of four layers of media, such as “Metallic Substrate / Gap / Coated Sample / Clear Window” is widely used in the shock wave temperature measurement of metallic materials. The Laplace transform was used to solve the heat conduction equation of the “four-layer media model” subjected to shock wave compression. The results show that when the shock wave sweeps through the interface between the metal coating sample and the window (“sample / window” interface) , The interface temperature relaxation process is closely related to the gap size. When the gap thickness is close to the thickness of the coating, a sharp peak appears at the beginning of the step-temperature profile of the sample / window interface The height and width are related to the dimensions of the gap; if the thickness of the metal coating is much greater than the thickness of the gap, the temperature profile is a flat top.