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CN-122016886-A - Analysis device

CN122016886ACN 122016886 ACN122016886 ACN 122016886ACN-122016886-A

Abstract

The embodiment of the application provides an analysis device, and belongs to the technical field of radioactive element analysis. The ray emitter positioned on one side of the first diaphragm, which is away from the sample to be measured, can emit rays to the sample to be measured so that the rays are converted into first characteristic signals through the sample to be measured, the first detector positioned on one side of the second diaphragm, which is away from the sample to be measured, is used for receiving the first characteristic signals passing through the second diaphragm, the second detector positioned on one side of the third diaphragm, which is away from the sample to be measured, is used for receiving the second characteristic signals which are spontaneously generated by the sample to be measured and pass through the third diaphragm, a plane which coincides with the central axis of the first diaphragm and the central axis of the second diaphragm is a preset plane, and the central axis of the third diaphragm is parallel to and spaced from the preset plane. The possibility that the first characteristic signal and the second characteristic signal generate light paths to cross is reduced, interference of the first characteristic signal to the second characteristic signal received by the second detector is reduced, and accuracy of detection results of the second detector is improved.

Inventors

  • KANG HAIYING
  • XIONG CHAOJIE
  • ZHENG WEIMING
  • TAO MIAOMIAO
  • WU YULONG

Assignees

  • 中国原子能科学研究院

Dates

Publication Date
20260512
Application Date
20260104

Claims (10)

  1. 1. An analysis device, comprising: at least three diaphragms including a first diaphragm, a second diaphragm and a third diaphragm; The accommodating part is provided with an accommodating cavity and a through hole communicated with the accommodating cavity, the accommodating cavity is used for accommodating a sample to be tested, and the diaphragms are coaxially arranged with the corresponding through holes respectively; The ray emitter is positioned at one side of the first diaphragm, which is away from the sample to be detected, and can emit rays to the sample to be detected so as to enable the rays to be converted into first characteristic signals through the sample to be detected; The first detector is positioned at one side of the second diaphragm, which is away from the sample to be detected, and is used for receiving the first characteristic signal passing through the second diaphragm; The second detector is positioned at one side of the third diaphragm, which is away from the sample to be detected, and is used for receiving a second characteristic signal which is spontaneously generated by the sample to be detected and passes through the third diaphragm; the central axis of the first diaphragm is intersected with the central axis of the second diaphragm, a plane coinciding with the central axis of the first diaphragm and the central axis of the second diaphragm is a preset plane, the central axis of the third diaphragm is parallel to the preset plane, and the central axis of the third diaphragm is arranged at intervals with the preset plane.
  2. 2. The analysis device according to claim 1, wherein the housing chamber has a preset axis arranged in an up-down direction, an intersection point of a central axis of the first diaphragm and a central axis of the second diaphragm is on the preset axis, a central axis of the third diaphragm has an intersection point with the preset axis, and the preset axis coincides with a central axis of the sample to be measured.
  3. 3. The analysis device according to claim 2, wherein a minimum included angle between the central axis of the first diaphragm and the central axis of the second diaphragm is a preset included angle, and the preset included angle is 30 ° to 90 °.
  4. 4. The analysis device of claim 2, wherein a minimum included angle between a central axis of the first diaphragm and a central axis of the second diaphragm is a preset included angle, and the preset included angle is 180 °.
  5. 5. The analysis device according to claim 2, wherein a central axis of the third diaphragm is perpendicular to the preset axis.
  6. 6. The analysis device according to any one of claims 1 to 5, wherein the analysis device includes a sealing member for sealing the through hole.
  7. 7. The analysis device of claim 6, wherein the material of the seal is boron carbide or carbon fiber.
  8. 8. The analysis device according to any one of claims 1 to 5, wherein the analysis device comprises a container box, all of the diaphragm, the radiation emitter, the first detector, the second detector and the accommodating member are located in the container box, a filling member for shielding radiation is disposed in the container box, and the filling member wraps the accommodating member.
  9. 9. The analysis device of claim 8, further comprising a glove box, the container box being connected to the glove box, the glove box being in communication with the receiving cavity.
  10. 10. The analysis device of any one of claims 1-5, further comprising a workstation electrically connected to the radiation emitter, the first detector, and the second detector, respectively, the workstation configured to process and analyze signals transmitted by the first detector and the second detector.

Description

Analysis device Technical Field The present application relates to a radioactive element analysis technique, and more particularly, to an analysis device. Background The X-ray fluorescence analysis technology is a method for analyzing substance components and researching chemical states by exciting radioactive elements in a sample to be detected by utilizing primary X-rays or other microscopic ions to generate characteristic X-rays. When X-rays irradiate a sample to be detected, the absorption energy of inner-layer electrons of elements in the sample is driven out to form electron holes, the outer-layer electrons spontaneously transit to fill the holes, and the energy released in the transition process is radiated in the form of characteristic X-rays. The X-ray absorption spectrometry utilizes the resonance absorption characteristic of atomic inner-layer electrons to X-rays with specific energy, and realizes the qualitative identification, quantitative analysis and chemical state research of radioactive elements in a sample to be detected by detecting the intensity of the transmitted X-rays. When X-rays irradiate a sample to be detected, if the energy of the X-rays is just equal to the ionization energy threshold value of electrons in the inner layer of the radioactive element, the electrons in the inner layer can absorb energy and transition to a free state, so that the incident X-ray intensity is attenuated sharply. The spontaneous X-ray analysis technology is to utilize a detector to measure the characteristic X-rays of spontaneous radiation in the decay process of radioactive elements in a sample to be detected, and realize qualitative and quantitative determination of the radioactive elements in the sample to be detected through analysis. In the related art, a detector of an analysis device is used for receiving a spontaneous signal of a sample to be detected, and the detector may receive a signal converted by a radiation generator through the sample to be detected, so as to cause signal interference. Disclosure of Invention The embodiment of the application provides an analysis device which can reduce signal interference. The technical scheme of the embodiment of the application is realized as follows: An embodiment of the present application provides an analysis apparatus including: at least three diaphragms including a first diaphragm, a second diaphragm and a third diaphragm; The accommodating part is provided with an accommodating cavity and a through hole communicated with the accommodating cavity, the accommodating cavity is used for accommodating a sample to be tested, and the diaphragms are coaxially arranged with the corresponding through holes respectively; The ray emitter is positioned at one side of the first diaphragm, which is away from the sample to be detected, and can emit rays to the sample to be detected so as to enable the rays to be converted into first characteristic signals through the sample to be detected; The first detector is positioned at one side of the second diaphragm, which is away from the sample to be detected, and is used for receiving the first characteristic signal passing through the second diaphragm; the second detector is positioned at one side of the third diaphragm, which is away from the sample to be detected, and is used for receiving the second characteristic signal which is spontaneously generated by the sample to be detected and passes through the third diaphragm; the central axis of the first diaphragm is intersected with the central axis of the second diaphragm, a plane coinciding with the central axis of the first diaphragm and the central axis of the second diaphragm is a preset plane, the central axis of the third diaphragm is parallel to the preset plane, and the central axis of the third diaphragm and the preset plane are arranged at intervals along the up-down direction. In some embodiments, the accommodating cavity has a preset axis arranged along an up-down direction, an intersection point of a central axis of the first diaphragm and a central axis of the second diaphragm is on the preset axis, a central axis of the third diaphragm and the preset axis have an intersection point, and the preset axis is coincident with a central axis of the sample to be measured. In some embodiments, the minimum included angle between the central axis of the first diaphragm and the central axis of the second diaphragm is a preset included angle, and the preset included angle is 30 ° to 90 °. In some embodiments, the minimum included angle between the central axis of the first diaphragm and the central axis of the second diaphragm is a preset included angle, and the preset included angle is 180 °. In some embodiments, a central axis of the third diaphragm is perpendicular to the preset axis. In some embodiments, the analysis device comprises a seal for sealing the through-hole. In some embodiments, the material of the seal is boron carbide or carbon fiber. In some