X ray collimator apparatus

Abstract

The invention relates to an X-ray collimator device which comprises a base (6). The invention is characterized in that: the base (6) is fixedly connected with a slit body (1); a cut-through slit (2) is arranged in the slit body (1); the slit (2) is rectangular; an internal snap-fitting plane (10) and an outer snap-fitting plane (11) of an L-shaped upper fastener (1-1) and a lower fastener (1-2) are snap-fitted in a staggered way along an optical path direction with a convex step face and a concave step face which are mutually matched, and fixed with a positioning pin (4) and a positioning screw (5) so as to form the slit body (1), the appearance of which is a regular hexahedron. The slit of the invention used for the collimator device of an X-ray test analysis instrument device has accurate positioning and does not produce a penumbra region or X-ray scattering interference; the processing and the use assembly debugging are convenient; the fast replacement is convenient; the precision and the efficiency of the test analysis are reliably enhanced; and the requirement of the high precision test can be met.

Description

technical field [0001] The invention relates to a collimator device for X-ray test and analysis equipment. Background technique [0002] In the existing X-ray test and analysis equipment, the two collimator devices used are respectively fixed at the X light source and the detector. The scattered rays generated by the sample to be tested pass through the slit of another collimator device and enter the detector for corresponding test analysis. The collimator device usually consists of a base, an insert frame and more than one slit insert, the base is fixed on the instrument and equipment by screws, the insert frame is fixedly connected with the base, and the slit insert is inserted on the insert frame The two inserting sides of the slit insert are positioned by springs in the slot of the insert frame; each slit insert has a rectangular slit with a certain width and height in the middle, and several slits on the insert frame The center of the slit of the slit insert is theore...

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of this insert-type collimator device structure is that after the slit insert is worn out during repeated insertion and extraction and the strength changes caused by the aging of the positioning spring, the positioning of the slit insert is inaccurate, and the slit insert is inaccurate. It is difficult to locate the centers of the slits on a straight line, especially the slit inserts of thicker blocking materials, which are difficult to assemble, adjust and replace, and are likely to cause penumbra areas, which have a greater impact on the straight-through of the collimator. This directly affects the test accuracy and test efficiency of X-ray test and analysis instruments and equipment. Therefore, for high-precision tests, the insert structure cannot meet the test requirements; For small slits, such as those with a diameter of 0.1 mm, the existing processing technology cannot guarantee the smoothness of the arc surface and the straight line of the center line of the slit, which will also affect the test accuracy and test accuracy of X-ray test and analysis equipment efficiency

[0005] In addition, a slit end face of the existing collimator device is directly close to the X light source or detector, causing X-ray scattering or scattered X-rays to enter the detector, affecting the results of test analysis

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