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CN112666196B - A radiation integration device - Google Patents

A radiation integration device Download PDF

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Publication number
CN112666196B
CN112666196B CN201910981943.XA CN201910981943A CN112666196B CN 112666196 B CN112666196 B CN 112666196B CN 201910981943 A CN201910981943 A CN 201910981943A CN 112666196 B CN112666196 B CN 112666196B
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ray
collimator
collimating
lenses
lens
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CN112666196A (en
Inventor
裴延玲
郭付达
王鸣
宫声凯
李树索
徐惠彬
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Beihang University Sichuan International Center For Innovation In Western China Co ltd
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Beihang University Sichuan International Center For Innovation In Western China Co ltd
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  • X-Ray Techniques (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

The invention discloses a ray integration device. The X-ray integrating device is located on an outgoing light path of X-rays and used for integrating the X-rays emitted by an X-ray source, and comprises N X-ray focusing lenses, N collimating lenses and an outgoing light path collimator, wherein the N X-ray focusing lenses, the N collimating lenses and the outgoing light path collimator are sequentially arranged along the outgoing light path of the X-ray source, the N collimating lenses are located at focusing focal positions of the N X-ray focusing lenses, the outgoing light path collimator is located at the tail end of the collimating lenses, N X-ray focusing lenses, the N collimating lenses and the collimator are coaxially arranged, the N X-ray focusing lenses and the N collimating lenses are mutually arranged at intervals, each X-ray focusing lens is used for focusing the X-rays, each collimating lens is used for converting the focused X-rays into parallel light, and the collimator is used for collimating the X-rays. The ray integrating device can meet the requirement of finer size of X-ray beams.

Description

Ray integration device
Technical Field
The invention relates to the field of X-ray diffraction analysis, in particular to a ray integration device.
Background
Laboratory, factory-level X-ray diffraction analysis occasionally places special demands on the size of the X-ray beam. In general, the X-ray beam emitted from the X-ray source is thick, and cannot meet the requirements of the beamlets.
Disclosure of Invention
The invention aims to provide a ray integration device which meets the requirement of finer X-ray beam size.
In order to achieve the above object, the present invention provides the following solutions:
The X-ray integrating device is positioned on an emergent light path of X-rays and used for integrating the X-rays emitted by an X-ray source, and comprises N X-ray focusing mirrors, N collimating lenses and an emergent light path collimator, wherein the N X-ray focusing mirrors, the N collimating lenses and the emergent light path collimator are sequentially arranged along the emergent light path of the X-ray source, the N collimating lenses are respectively positioned at focusing focus positions of the N X-ray focusing mirrors, and the emergent light path collimator is positioned at the tail end of the collimating lenses;
The X-ray focusing lenses, the collimating lenses and the collimators are coaxially arranged, and the X-ray focusing lenses and the collimating lenses are mutually arranged at intervals;
Each X-ray focusing lens is used for focusing X-rays, each collimating lens is used for converting the focused X-rays into parallel light, and the collimator is used for collimating the X-rays.
Optionally, the collimator, the N X-ray focusing mirrors and the N collimating lenses are all disposed in a radiation shield.
Optionally, an air conditioner is arranged in the ray protection cover, and the air conditioner is used for adjusting the air temperature in the ray protection cover.
Alternatively, the N X-ray focusing mirrors are Montel multilayer film focusing mirrors.
Optionally, the collimating lens is an X-ray capillary optical lens.
Optionally, an optical hole is formed in a position, on the side wall of the radiation protection cover, where the optical axis passes through, and the optical hole is used for passing through an X-ray beam.
Optionally, the radiation shield is made of lead plate.
Optionally, the collimator is a mechanical collimator.
According to the specific embodiment provided by the invention, the radiation integrating device disclosed by the invention has the following technical effects that the size of an X-ray beam is reduced by continuously focusing and collimating the X-rays emitted by the X-ray source, so that the requirement of finer size of the X-ray beam is met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of an embodiment of a radiation integration apparatus according to the present invention;
Fig. 2 is a schematic diagram of an X-ray capillary optical lens.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
FIG. 1 is a block diagram of an embodiment of a radiation integration apparatus according to the present invention.
Referring to fig. 1, the radiation integrating device is located on an outgoing light path of an X-ray, and is used for integrating the X-ray emitted by an X-ray source. The ray integration device can integrate the millimeter-sized X-ray beam into the micrometer-sized X-ray focal spot.
The ray integration device comprises N X-ray focusing mirrors 1, N collimating lenses 2 and a collimator 3;N, wherein the N X-ray focusing mirrors 1, the N collimating lenses 2 are respectively positioned at the focusing focus positions of the N X-ray focusing mirrors 1, and the collimator 3;N is positioned on the emergent light path of the collimating lens 2 at the tail end and is a positive integer.
The X-ray focusing lenses 1, the collimating lenses 2 and the collimators 3 are coaxially arranged, and the X-ray focusing lenses 1 and the collimating lenses 2 are mutually arranged at intervals.
Each of the X-ray focusing mirrors 1 is used for focusing X-rays, each of the collimating lenses 2 is used for converting the focused X-rays into parallel light, and the collimator 3 is used for collimating the X-rays.
The collimator 3, the N X-ray focusing mirrors 1 and the N collimating lenses 2 are all arranged in a ray protection cover 4.
An air conditioner 5 is arranged in the ray protection cover 4, and the air conditioner 5 is used for adjusting the air temperature in the ray protection cover 4.
The N X-ray focusing mirrors 1 are all Montel type multilayer film focusing mirrors. The Montel multilayer film focusing mirror is capable of integrating an incident X-ray beam into a focal spot that is more than ten times finer than the incident X-ray beam.
Montel multilayer film focusing mirror is a thin film technology based X-ray optic manufactured by Incoatec, germany. A Montel type multilayer film focusing mirror is a coating layer with a multilayer film structure deposited by a coating technique on a lens substrate with a high quality optical surface. Based on Bragg's law, X-rays passing through a Montel multilayer film focusing mirror are collected over a range of solid angles. The incident angle of the incident light beam varies with the position on the lens, and the thickness of the corresponding lens varies. The Montel type multilayer film focusing lens adopts two pieces of multilayer film lenses which are arranged side by side in an L-shaped distribution mode. The two elliptical lenses form an L-shaped distribution to realize optical focusing.
The collimating lens 2 is an X-ray capillary optical lens.
Fig. 2 is a schematic diagram of an X-ray capillary optical lens.
Referring to fig. 2, the working principle of the X-ray capillary optical lens is based on the principle of total reflection of X-rays. The focal spot is collimated by an X-ray capillary optical lens to form a high-brightness X-ray parallel beam. The X-ray capillary optical lens needs to adjust parallelism by increasing the diameter of the beam, but this increase is much smaller than the degree of focusing by a Montel type multilayer film focusing mirror, and is therefore negligible.
Each X-ray focusing mirror 1 achieves primary focusing. The size of the collimating lens 2 behind each stage of X-ray focusing lens 1 is selected according to the size and the divergence angle of the focused light spot. Each stage of X-ray focusing lens 1 is selected according to the thickness degree and focusing multiple requirement of incident light.
And a light hole is formed in the side wall of the ray protection cover 4 at a position where the optical axis passes through, and the light hole is used for passing through an X-ray beam. The pupil of the first stage X-ray focusing mirror 1 in the incident direction is used for transmitting the beam emitted from the X-ray source. The light hole in the outgoing direction of the collimator 3 is used for transmitting the integrated light beam. Therefore, the size of the aperture in the incident direction of the first stage X-ray focusing mirror 1 is much larger than the aperture in the emergent direction of the collimator 3.
The radiation shield 4 is made of lead plate. The ray protection cover 4 plays a role in protection and is used for isolating X rays and preventing the X rays from being emitted.
The collimator 3 is a mechanical collimator.
The working principle of the ray integration device of the invention is as follows:
The light beam emitted by the X-ray source enters the first-stage X-ray focusing lens after passing through the light hole in the incidence direction of the first-stage X-ray focusing lens, and the light beam is focused by the first-stage X-ray focusing lens and becomes a light spot to be converged at the focus of the first-stage X-ray focusing lens. The collimator lens at the focus of the first stage X-ray focusing lens converts the light spot at the focus into parallel light and irradiates the parallel light into the first stage X-ray focusing lens, the collimator lens at the focus of the second stage X-ray focusing lens converts the light spot at the focus into parallel light and irradiates the parallel light into the third stage X-ray focusing lens.
According to the specific embodiment provided by the invention, the radiation integrating device disclosed by the invention has the following technical effects that the size of an X-ray beam is reduced by continuously focusing and collimating the X-rays emitted by the X-ray source, so that the requirement of finer size of the X-ray beam is met. And meanwhile, the focused light spots are adjusted into parallel light by utilizing the total reflection principle, so that the attenuation of the beam energy is greatly reduced.
The principles and embodiments of the present invention have been described herein with reference to specific examples, which are intended to facilitate an understanding of the principles and concepts of the invention and are to be varied in scope and detail by persons of ordinary skill in the art based on the teachings herein. In view of the foregoing, this description should not be construed as limiting the invention.

Claims (6)

1. The ray integration device is characterized by being positioned on an emergent light path of X rays and used for integrating the X rays emitted by an X ray source, and comprises N X ray focusing mirrors, N collimating lenses and an emergent light path collimator, wherein the N X ray focusing mirrors, the N collimating lenses and the collimator are sequentially arranged along the emergent light path of the X ray source, the N collimating lenses are respectively positioned at focusing focal positions of the N X ray focusing mirrors, and the emergent light path collimator is positioned at the tail end of the collimating lenses;
The X-ray focusing lenses, the collimating lenses and the collimators are coaxially arranged, and the X-ray focusing lenses and the collimating lenses are mutually arranged at intervals;
each collimating lens is used for converting the focused X-rays into parallel light, and the collimator is used for collimating the X-rays;
The N X-ray focusing mirrors are Montel multilayer film focusing mirrors, and the collimating lens is an X-ray capillary optical lens;
the size of the collimating lens behind each stage of X-ray focusing lens is selected according to the size and the divergence angle of the focused light spot;
The light beam emitted by the X-ray source enters the first-stage X-ray focusing lens after passing through the light hole in the incidence direction of the first-stage X-ray focusing lens, the light beam is focused by the first-stage X-ray focusing lens to form a light spot, the light spot at the focus of the first-stage X-ray focusing lens is converted into parallel light and is emitted into the second-stage X-ray focusing lens, the light spot at the focus of the second-stage X-ray focusing lens is converted into parallel light and is emitted into the third-stage X-ray focusing lens until the light spot at the focus of the N-stage X-ray focusing lens is converted into parallel light and is emitted into the collimator, and the collimator further collimates and emits the parallel light to obtain the integrated light beam.
2. The radiation integration device of claim 1, wherein the collimator, the N X-ray focusing mirrors and the N collimating lenses are all disposed within a radiation shield.
3. The radiation integrating device according to claim 2, wherein an air conditioning device is arranged in the radiation shield, and the air conditioning device is used for adjusting the air temperature in the radiation shield.
4. The radiation integrating device as claimed in claim 2, wherein an optical aperture is provided in a side wall of the radiation shield at a position where the optical axis passes through, the optical aperture being adapted to pass the X-ray beam.
5. The radiation integrating device of claim 2 wherein said radiation shield is made of lead plate.
6. The radiation integration device of claim 1, wherein the collimator is a mechanical collimator.
CN201910981943.XA 2019-10-16 2019-10-16 A radiation integration device Active CN112666196B (en)

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