METHOD OF MEASURING DIMENSIONS OF EFFECTIVE FOCUS SPOT OF MICROFOCUS X-RAY TUBES Russian patent published in 2018 - IPC G01T1/29 

FIELD: physics.

SUBSTANCE: invention relates to X-ray technology and can be used to measure the dimensions of an effective focal spot of microfocus X-ray tubes. Summary of the Invention is that X-ray transmission of the test object is carried out, the X-ray detector is received by the detector through the test object, and converting the radiation into a digital X-ray image of the test object, the obtained linear profiles of the X-ray digital image of the test object are differentiated with subsequent generation of graphs of differentiated linear profiles along the X and Y axes used for further calculations; based on the results of the calculations, several intermediate values of the size of the X-ray tube microfocus spot along the X axis and several values along the Y axis are determined for one study, that makes it possible to determine the average value of the size of the microfocus spot and the scatter in percent; test object is performed in the form of a cross-shaped combination of several metal objects in one plane having a projection of a circular shape on this plane, having the same diameter and spaced from each other by finite distances comparable to the diameter of the object; in particular as a test object, four or five metal balls of the same diameter fixed on a common base can be used, as well as four or five through holes of the same diameter in a thin metal plate; to ensure the positioning of the test object on the image, it is equipped with a label in the form of a lead letter.

EFFECT: increased measurement accuracy.

6 cl, 5 dwg