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一、引言测定单晶体取向的方法很多,如劳埃法,衍射仪法、转晶法等,其中劳埃法较为常用。利用劳埃法测定单晶取向时,常用点焦点拍照。如果要在衍射仪上进行取向测定,按照常规,必须将衍射仪所用射线源的线焦点转换成点焦点,从而影响衍射仪正常测试的进行。为了充分发挥衍射仪的作用,本文在衍射仪测试时,即用线焦点扫描的同时,进行拍照劳埃花样的试验。并分别用线焦和点焦拍照同一试样的同一方位劳埃花样进行对比试验,以便寻求它们之间的异同。为了简便,迅速而又准确测量和标定劳埃花样,本文利用公式tanαψ=L/D设计出一种图表。这种图表可以用来直接测量每个
I. INTRODUCTION There are many methods to determine the orientation of single crystal, such as Laue method, diffractometer method, and crystal transformation method, among which Laue method is more commonly used. When using Laie method to determine the orientation of single crystal, the common point of focus to take pictures. If the diffraction measurement is to be made on a diffractometer, it is customary to convert the line focus of the ray source used by the diffractometer into a spot focus, thereby affecting the normal test of the diffractometer. In order to give full play to the role of diffractometer, this article in the diffractometer test, that is, with the line focus scanning at the same time, the photograph Laurie pattern test. And respectively, with the line focus and focal point to take the same sample of the same orientation Laayou pattern comparison test, in order to find the similarities and differences between them. In order to measure and calibrate the Lahti pattern quickly and accurately, this paper uses the formula tan αψ = L / D to design a graph. This chart can be used to measure each directly