Non-destructive testing—Characteristics of focal spots in industrial X-ray systems for use in non-destructive testing—Part 2:Pinhole camera radiographic method
IDT EN 12543-2:1999
全国无损检测标准化技术委员会(SAC/TC 56)
GB/T 25758的本部分规定了采用针孔照相机射线照相方法，来测量管电压最高至500 kV的工业X射线系统的大于0.2 mm焦点尺寸的方法。本部分中测量所用的电压限于200 kV。
X射线图像的像质和分辨力很大程度上取决于焦点的特性，尤其是尺寸和二维强度分布。
商用X射线管类型（例如在广告或贸易中）的特性，宜首先考虑附录A所给出的最大值。
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