X-ray circularly polarized light detection device and detection system

Abstract

The utility model relates to an X-ray circularly polarized light detection device and a detection system. The X-ray circularly polarized light detection device comprises a lead box, a light path structure, a fiber optic spectrometer and a computer, the light path structure comprises an excitation source, a sample table, a 1 / 4 wave plate and a linear polarizer which are sequentially arranged in the lead box at intervals; the optical fiber spectrometer is arranged outside the lead box and connected with an optical fiber, and one end of the optical fiber is close to the linear polarizer; the computer is arranged outside the lead box and connected with the excitation source and the optical fiber spectrometer. The chiral scintillator is a material with a circular polarization luminescence phenomenon under high-energy radiation and has the advantages of reducing optical crosstalk and improving spatial resolution in the imaging field, and no commercial detection device based on the chiral scintillator exists at the present stage. The detection device can accurately measure circular polarization signals excited by high-energy rays, the detection precision is high, the high-energy rays in the detection process can be well shielded, and the safety of operators is ensured; the whole device is simple in structure, convenient to install and operate and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of optical equipment, in particular to an X-ray circular polarization light detection device and a detection system. Background Art

[0002] Chiral compounds, when excited by monochromatic light, emit left and right circularly polarized light with different intensities, a phenomenon known as circularly polarized luminescence. Circularly polarized fluorescence spectrometers can be used to detect the difference in intensities of left and right circularly polarized fluorescence emitted by materials, and can be used to study the excited-state structural characteristics of chiral luminescent systems and obtain information about the chirality of the excited state. Chiral luminescent materials, due to their ability to emit strong left and right circularly polarized light in the excited state, have important applications in display, storage, and information encryption.

[0003] Existing commercial circularly polarized luminescence measurement systems generally use oxygen-free Xe lamps or Hg / Xe sources as light sources, which cannot meet the requirements of detection under conditions of excitation sources such as high-energy radiation. Utility Model Content

[0004] To this end, the technical problem to be solved by the present invention is to overcome the problem that the commercial circularly polarized luminescence measurement system in the prior art generally uses an oxygen-free Xe lamp or a Hg / Xe source as a light source, which cannot meet the requirements of detection under conditions of excitation sources such as high-energy radiation.

[0005] In order to solve the above technical problems, the utility model provides a circular polarization light detection device under X-ray, comprising:

[0006] lead box;

[0007] An optical path structure, comprising an excitation source, a sample stage, a quarter wave plate, and a linear polarizer, which are sequentially arranged in the lead box along a straight line and spaced apart from each other;

[0008] A fiber optic spectrometer, the fiber optic spectrometer is arranged outside the lead box, and the fiber optic spectrometer is connected to an optical fiber extending into the lead box, and one end of the optical fiber located in the lead box is close to the linear polarizer;

[0009] A computer is arranged outside the lead box and is connected to the excitation source and the fiber optic spectrometer respectively.

[0010] In one embodiment of the present invention, the lead box includes a box body, a switch door is provided on one side of the box body, and a wire passing hole is provided on the side surface of the box body.

[0011] In one embodiment of the present invention, the computer is connected to the excitation source via a connecting line, and both the connecting line and the optical fiber extend into the box through the wire hole.

[0012] In one embodiment of the present invention, a lead plate is further included for covering the wire hole.

[0013] In one embodiment of the present invention, the box body is provided with a plurality of fitting holes surrounding the wire passing holes, and the lead plate is provided with a plurality of protrusions respectively matching the fitting holes. The lead plate is connected to the box body at the fitting holes through the protrusions and covers the wire passing holes.

[0014] In one embodiment of the present invention, the optical path structure also includes a base, on which are provided five mounting seats arranged at intervals along the length direction of the base, and the excitation source, sample stage, 1 / 4 wave plate, linear polarizer and one end of the optical fiber located in the lead box are respectively connected to one of the mounting seats.

[0015] In one embodiment of the present invention, a rotating structure is provided on the mounting base connected to the linear polarizer, and the linear polarizer is mounted on the rotating structure.

[0016] In one embodiment of the present invention, the sample stage is a liftable sample stage.

[0017] In one embodiment of the present invention, the excitation source is an X-ray source.

[0018] A detection system comprises the X-ray circularly polarized light detection device as described in any one of the above.

[0019] The above technical solution of the utility model has the following advantages compared with the prior art:

[0020] The utility model discloses a circularly polarized light detection device and detection system under X-ray conditions, comprising a lead box; an optical path structure, comprising an excitation source, a sample stage, a quarter-wave plate, and a linear polarizer, which are sequentially arranged in the lead box along the same straight line; a fiber optic spectrometer, which is arranged outside the lead box and is connected to an optical fiber extending into the lead box, with one end of the optical fiber located in the lead box near the linear polarizer; and a computer, which is arranged outside the lead box and is connected to the excitation source and the fiber optic spectrometer, respectively. The utility model's circularly polarized light detection device under X-ray conditions can accurately measure circular polarization signals under high-energy ray excitation, has high detection accuracy, and can effectively shield high-energy rays during the detection process, ensuring the safety of the operator. The entire device has a simple structure, is easy to install and operate, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the content of the utility model easier to understand, the utility model is further described in detail below based on the specific embodiments of the utility model and in conjunction with the accompanying drawings, wherein

[0022] Figure 1 This is a schematic structural diagram of a lead box of a circularly polarized light detection device under X-rays according to a preferred embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the optical path structure of the circularly polarized light detection device under X-rays, the connection between the fiber optic spectrometer and the computer in the preferred embodiment of the utility model.

[0024] Explanation of the reference numerals in the specification: 1. Lead box; 11. Box body; 12. Switch door; 13. Wire hole; 2. Optical path structure; 21. Excitation source; 22. Sample stage; 23. 1 / 4 wave plate; 24. Linear polarizer; 3. Fiber optic spectrometer; 31. Optical fiber; 4. Computer; 5. Lead plate. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0026] Example 1

[0027] Reference Figure 1 and Figure 2 As shown, the utility model is an X-ray circular polarization light detection device, comprising:

[0028] Lead box 1;

[0029] The optical path structure 2 includes an excitation source 21, a sample stage 22, a quarter wave plate 23, and a linear polarizer 24, which are sequentially arranged in the lead box 1 along the same straight line, and a sample is placed on the sample stage 22;

[0030] The optical fiber spectrometer 3 is arranged outside the lead box 1 and is connected to an optical fiber 31 extending into the lead box, and one end of the optical fiber 31 in the lead box 1 is close to the linear polarizer 24;

[0031] Computer 4: Computer 4 is arranged outside the lead box 1 and is connected to the excitation source 21 and the optical fiber spectrometer 3 respectively.

[0032] Working Principle: A sample exhibiting circularly polarized luminescence, excited by an X-ray source, emits light. After passing through quarter-wave plate 23, the circularly polarized light is converted to linearly polarized light. While keeping quarter-wave plate 23 stationary, rotating linear polarizer 24 allows the emission spectra at different angles to be collected. Variations in light intensity at these angles can be detected, demonstrating the presence of circularly polarized luminescence. It is important to note that when rotating linear polarizer 24, excitation source 21 must be turned off before opening door 12 of lead box 1.

[0033] Here, we only take X-rays as an example, and other excitation sources 21 can also be used, and the operation method is similar.

[0034] The utility model discloses an X-ray circular polarization light detection device, which can accurately measure the circular polarization signal under the excitation of high-energy rays, has high detection accuracy, and can well shield the high-energy rays during the detection process to ensure the safety of the operator; the entire device has a simple structure, is easy to install and operate, and has high practicality.

[0035] Furthermore, the lead box 1 includes a housing 11, with a door 12 provided on one side, and a wire hole 13 provided on the side of the housing 11. Specifically, the lead box 1 can effectively block high-energy radiation, thereby ensuring the safety of the detection process. The door 12 facilitates the installation of the components of the optical path structure 2 within the housing 11. The housing 11 also includes a wire hole 13 for the connection wires and optical fiber 31 to pass through, facilitating installation while maximizing the lead box 1's blocking effect on high-energy radiation.

[0036] Furthermore, the computer 4 is connected to the excitation source 21 via a connecting wire, and the connecting wire and the optical fiber 31 extend into the lead box 1 through the wire hole 13. Specifically, the computer 4 can analyze and process the spectral signals collected by the fiber optic spectrometer 3, and the computer 4 can control the switching of the excitation source 21 and the size of the dose rate.

[0037] Furthermore, it also includes a lead plate 5 for covering the wire hole. After the wire threading is completed, the lead plate 5 can cover the wire hole 13 to further prevent radiation leakage.

[0038] Furthermore, the box body 11 is provided with a plurality of fitting holes surrounding the wire hole 13, and the lead plate 5 is provided with a plurality of protrusions that match each fitting hole. The lead plate 5 is connected to the box body 11 at the fitting holes via the protrusions and covers the wire hole 13. It should be noted that after the lead plate 5 is connected to the box body 11, a certain gap is left between the bottom surface of the lead plate 5 and the box body 11 to allow the connecting wire and the optical fiber 31 to enter the wire hole 13.

[0039] Furthermore, the optical path structure 2 includes a base, which is provided with five mounting blocks spaced apart along its length. The excitation source 21, sample stage 22, quarter-wave plate 23, linear polarizer 24, and one end of the optical fiber 31 located within the lead box 1 are each connected to a mounting block. Specifically, the position of each mounting block on the base is adjustable, allowing the relative positions of the components connected thereto to be adjusted according to different needs.

[0040] Furthermore, a rotating structure is provided on the mounting base connected to the linear polarizing plate 24 , and the linear polarizing plate 24 is mounted on the rotating structure, so that the linear polarizing plate 24 can be rotated and adjusted easily.

[0041] Furthermore, the sample stage 22 is a liftable sample stage.

[0042] Furthermore, the excitation source 21 is an X-ray source. It is conceivable that the modular design of the detection device allows selection or replacement of a suitable excitation source 21 according to different requirements, such as ultraviolet light or high-energy radiation.

[0043] Example 2

[0044] The utility model also discloses a detection system, which includes the circularly polarized light detection device under X-rays as described in the first embodiment.

[0045] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A circular polarization light detection device under X-ray, characterized in that: include: lead box; An optical path structure, comprising an excitation source, a sample stage, a quarter wave plate, and a linear polarizer, which are sequentially arranged in the lead box along a straight line and spaced apart from each other; A fiber optic spectrometer, the fiber optic spectrometer is arranged outside the lead box, and the fiber optic spectrometer is connected to an optical fiber extending into the lead box, and one end of the optical fiber located in the lead box is close to the linear polarizer; A computer is arranged outside the lead box and is connected to the excitation source and the fiber optic spectrometer respectively.

2. The X-ray circular polarization detection device according to claim 1, characterized in that: The lead box comprises a box body, a switch door is provided on one side of the box body, and a wire passing hole is provided on the side surface of the box body.

3. The X-ray circular polarization detection device according to claim 2, characterized in that: The computer is connected to the excitation source via a connecting line, and both the connecting line and the optical fiber extend into the box through the wire hole.

4. The X-ray circular polarization detection device according to claim 3, characterized in that: It also includes a lead plate for covering the wire hole.

5. The X-ray circular polarization detection device according to claim 4, characterized in that: The box body is provided with a plurality of fitting holes surrounding the wire-passing holes, and the lead plate is provided with a plurality of protrusions respectively matching the fitting holes. The lead plate is connected to the box body at the fitting holes through the protrusions and covers the wire-passing holes.

6. The X-ray circular polarization detection device according to claim 1, characterized in that: The optical path structure also includes a base, on which are provided five mounting seats arranged at intervals along the length direction of the base. The excitation source, sample stage, 1 / 4 wave plate, linear polarizer and one end of the optical fiber located in the lead box are respectively connected to one of the mounting seats.

7. The X-ray circular polarization detection device according to claim 6, characterized in that: A rotating structure is provided on the mounting base connected to the linear polarizer, and the linear polarizer is mounted on the rotating structure.

8. The X-ray circular polarization detection device according to claim 1, characterized in that: The sample stage is a liftable sample stage.

9. The X-ray circular polarization detection device according to claim 1, characterized in that: The excitation source is an X-ray source.

10. A detection system, characterized in that: The device comprises the circularly polarized light detection device under X-ray according to any one of claims 1 to 9.

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