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Raman spectrum-based neutron radiation dose detection method

A Raman spectroscopy and radiation dose technology is applied in the field of neutron radiation dose detection based on Raman spectroscopy, which can solve the problems of large detection error and low sensitivity, and achieve the effects of high sensitivity and improved detection efficiency.

Inactive Publication Date: 2020-05-15
BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
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Problems solved by technology

However, for slow neutrons with relatively low energy, the measurement based on the radiation signal generated after neutron incident has low sensitivity, resulting in huge detection errors

Method used

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  • Raman spectrum-based neutron radiation dose detection method
  • Raman spectrum-based neutron radiation dose detection method
  • Raman spectrum-based neutron radiation dose detection method

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Embodiment Construction

[0029] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for ease of description, only parts related to the invention are shown in the drawings.

[0030] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0031] In order to facilitate understanding and explanation, the following Figure 1 to Figure 3 The neutron radiation dose detection method based on Raman spectroscopy provided in the embodiment of the present application is described in detail.

[0032] Please refer to figure 1 , which is a sc...

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Abstract

The invention discloses a Raman spectrum-based neutron radiation dose detection method, which comprises the steps of placing a converter material attached to the surface of a substrate in a slow neutron irradiation environment, exciting the converter material by utilizing a Raman laser, and measuring a Raman spectrum of the converter material after neutron radiation; and further, comparing the Raman spectrum after neutron radiation of the converter material with the characteristic peak offset of the Raman spectrum in the calibration dose table, and determining the neutron radiation dose in theslow neutron radiation environment. According to the embodiment of the invention, the Raman spectrum of the converter material in the neutron radiation environment is measured, and the characteristicpeak of the Raman spectrum is compared with the characteristic peak of the Raman spectrum in the calibration dose table to obtain the characteristic peak offset, so that the neutron radiation dose isdetermined, the sensitivity is high, and the detection efficiency is improved.

Description

technical field [0001] The present invention generally relates to the technical field of space environment detection, in particular to a neutron radiation dose detection method based on Raman spectroscopy. Background technique [0002] With the diversification and maturity of my country's space missions, the exploration of the moon, Mars and other extraterrestrial planets has been gradually carried out. In the extremely complex space environment, various cosmic rays are mixed, such as galactic cosmic rays, solar cosmic rays and the Earth's radiation belt. These cosmic rays include neutron particles. The use of neutron radiation detectors to detect space neutron particles is conducive to deepening the understanding of the space environment. It is also an important basis for ensuring the normal operation of spacecraft and the safety of astronauts. [0003] At present, neutron radiation detection methods mainly include nuclear activation method, nuclear reaction method and nuc...

Claims

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Application Information

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IPC IPC(8): G01T1/10
CPCG01T1/10
Inventor 杨晓宁刘宇明李蔓田东波王志浩沈自才姜海富
Owner BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
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