RU193305U1 - DEVICE FOR X-RAY FLUORESCENT-OPTICAL CONTROL OF BULK SAMPLES - Google Patents

Abstract

Usage: for x-ray fluorescence-optical control of bulk samples. The essence of the utility model is that the device for X-ray fluorescence-optical control of bulk samples contains a housing that does not allow external illumination, which houses an optical recorder (1), consisting of a source (2) of LED lighting and a photodetector (3) for recording an array of color pixels images, a substrate (4) for sample placement, an X-ray fluorescence spectrometer (5), which includes a sample holder (7), an X-ray source (8) and an X-ray receiver (6) for X-ray measurements. Effect: improving the quality of the obtained optical information about the sample. 3 s.p. f-ly, 1 ill.

Description

The claimed device relates to the field of instrumentation, in particular to physical methods for the study of bulk materials based on combined X-ray fluorescence analysis with optical surface quality control of bulk samples.

From the current level of technology, a combined device and methods for X-ray fluorescence and optical control of samples is known, containing an X-ray source, detector, photodetector and radiation source (US 2015/0032398 A1 01/29/2015). The described device allows you to receive combined information from an x-ray and optical source in order to expand the capabilities of x-ray fluorescence analysis of samples with different surface morphology, by taking into account optical information about the samples.

The problem to which the claimed technical solution is directed is to create a device for X-ray fluorescence-optical control of bulk samples, which will increase the accuracy and completeness of the optical information necessary to adjust the information obtained using x-ray measurements.

This task is achieved due to the fact that the proposed device for x-ray fluorescence-optical control of bulk samples contains a single light-tight housing, which houses the source and receiver of x-ray radiation, as well as a source of LED illumination of the sample surface and a photodetector for recording an array of pixels of a color image and a substrate for placing the sample . The light source may be two single LEDs forming an equilateral triangle with the surface of the sample. Bulk samples are pressed into tablets in the form of a “sandwich structure” on a boric acid substrate. Bulk samples with a particle size of more than 1 mm can be optically examined without compression using a special substrate. The corrugated surface of a contrasting color with a breakdown color with triangular recesses acts as a substrate. The width of the recesses is equal to the average fraction of the studied sample material. The studied sample material is placed on a substrate in a single layer. Samples are first analyzed using an optical recorder, and then using an X-ray fluorescence spectrometer in any convenient form, i.e. in compressed form or in bulk, taking into account the results of the optical recorder.

The technical result provided by the given set of features of the utility model is to increase the accuracy and completeness of the obtained optical information about the sample through the use of pressing or corrugated substrate and fixed geometry, eliminating the influence of external radiation and improving the quality of X-ray fluorescence analysis. Simultaneously, a simplification of the design of the device and an increase in usability due to the lack of customizable parameters are achieved.

The device is illustrated by a description of a preferred embodiment with reference to the accompanying drawing of FIG. 1, which shows a diagram of a device for x-ray fluorescence-optical control of bulk samples.

The device x-ray fluorescence-optical control of bulk samples contains a housing that does not allow external lighting. An optical recorder 1, consisting of a light source 2 and a photodetector 3 for recording an array of pixels of a color image, is placed in the housing. The substrate 4 for the sample is also placed in the housing, the sample being either compressed in the form of a “sandwich structure” 10 with the substrate 4 or placed in bulk, in a single layer, on the corrugated surface 9 of the substrate 4.

An X-ray fluorescence spectrometer 5 is also located in the said housing, comprising a holder 7 for a sample substrate, an X-ray source 8 and an X-ray receiver 6.

The LED lighting source 2 contains two point LEDs of sufficient aperture for good illumination of the sample surface, arranged in such a way that they form an isosceles triangle with the sample surface on the substrate.

The device operates as follows.

A sample of bulk material is pressed onto a substrate 4 made of boric acid or scattered in a single layer on the corrugated surface 9 of the substrate 4.

In the first case, the surface of the sample, compressed in the form of a “sandwich structure” 10, is photographed, then the sample is turned over so that the surface of the sample is facing the x-ray source 8 of the X-ray fluorescence spectrometer 5, and measurements are made using the X-ray fluorescence spectrometer 5.

In the second case, if the average particle size is greater than 1 mm, the bulk sample is scattered in a single layer on the corrugated surface 9 of the substrate 4), a surface image is obtained, and then measured using an X-ray fluorescence spectrometer in any convenient way (for example, in a cuvette with a lavsan bottom, not shown ) Then, the obtained X-ray fluorescence information is processed taking into account the obtained optical data.

Claims (7)

1. The device is x-ray fluorescence-optical control of bulk samples, characterized in that it contains a housing that does not allow external lighting, in which are placed an optical recorder (1), consisting of a source (2) of LED lighting and a photodetector (3) for registering an array of pixels of a color image, a substrate (4) for placing the sample, an X-ray fluorescence spectrometer (5), which includes a sample holder (7), an X-ray source (8) and an X-ray receiver (6) for performing X-ray measurements. 2. The device according to claim 1, characterized in that two single LEDs of sufficient aperture for a clear image of the surface of the sample are placed as a source (2) of the sample, placed so that they form an isosceles triangle with the surface of the sample placed on the substrate (2). 3. The device according to claim 1, characterized in that the substrate (4) for placing the sample has a corrugated surface (9) of a contrasting color with the sample, while the sample is placed on the corrugated surface in bulk. 4. The device according to claim 1, characterized in that the substrate (4) is made of boric acid and pressed with a sample in the form of a “sandwich structure” (10).

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