Radioactive surface pollution measuring device and surface pollution measuring method

A measurement method, surface pollution technology, applied in the direction of measurement devices, radiation measurement, X-ray energy spectrum distribution measurement, etc., can solve the problems of mutual crosstalk α signal and β signal, cumbersome and time-consuming, low device measurement rate, etc., to achieve The effect of improving measurement efficiency and avoiding tedious and time-consuming processes

Active Publication Date: 2020-08-14
NAT INST OF METROLOGY CHINA
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Problems solved by technology

[0014] On the one hand, compared with the traditional radiation detection system and radiation detection method, there are problems that the α signal and β signal that often exist at the same time and crosstalk each other in amplitude, and the single fine measurement mode leads to the low measurement rate of the device. Problem, the radioactive surface contamination measurement device and surface contamination measurement method provided by the present invention, by separately setting the precise m...

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  • Radioactive surface pollution measuring device and surface pollution measuring method

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Embodiment 1

[0048] Such as figure 1 As shown, embodiment 1 discloses a kind of radioactive surface contamination measurement method, and contamination measurement method at least comprises the following steps:

[0049] S1: Detect radioactivity data in a non-polluted environment based on the first dose rate detection device 11 and use it as background data in a polluted environment to be measured.

[0050] Preferably, the present invention effectively reduces the systematic error existing in the measurement process by measuring the radioactive data in the non-polluted environment as the background data in the polluted environment to be measured, and improves the accuracy and reliability of the measured value;

[0051] S2: Based on the first rapid detection of the environment to be tested by the first dose rate detection device 11 and generating the first radioactivity data, the first pollution range is generated by the data processing unit 2, and the first pollution is detected by the seco...

Embodiment 2

[0074] This embodiment discloses a device for measuring radioactive surface contamination. In the case of no conflict or contradiction, the whole and / or part of the content of the preferred implementations of other embodiments can be used as a supplement to this embodiment.

[0075] According to a preferred embodiment, the radioactive surface contamination measurement device includes at least a radiation detection device 1, a data processing unit 2, and an environment sensing device 3, and the pollution measurement device is configured to: detect radioactive background data in a non-polluted environment based on the radiation detection device 1 , and quickly detect the first radioactive data existing in the environment to be tested, the data processing unit 2 can generate the first polluted environment range according to the first radioactive data for the user to further accurately detect the second radioactive data within the first polluted environment range, based on The coun...

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Abstract

The invention relates to a method for measuring radioactive surface pollution. The method at least comprises the following steps: testing response characteristics of an alpha channel and a beta channel when alpha and beta particles simultaneously exist in a radiation detection device by using a plurality of first standard sources comprising typical nuclides; providing a second standard source of pure alpha particles to determine the response of the alpha particles in the beta channel of the radiation detection device, thereby pre-determining the response coefficient of the beta channel of theradiation detection device to the incident alpha particles; providing a second standard source of pure beta particles to determine the response of the beta particles in the beta channel of the radiation detection device, thereby pre-determining the response coefficient of the beta channel of the radiation detection device to the incident beta particles; dividing the alpha channel response coefficient by the alpha channel counting rate to obtain alpha surface pollution; deducting the alpha particle counting rate by the beta channel counting rate, multiplying the alpha particle counting rate bythe optimized response coefficient of the beta channel to the alpha particles, and dividing by the beta particle response to obtain the beta surface pollution.

Description

technical field [0001] The invention relates to the field of radioactive pollution detection, in particular to a radioactive surface pollution measuring device and a surface pollution measuring method. Background technique [0002] Ionizing radiation is usually also called radioactive radiation. Because the energy of this type of radiation is relatively high, it can cause the atoms of surrounding substances to ionize, so it is called ionizing radiation. In the field of radiation protection, ionizing radiation is radiation that produces ion pairs in biological matter. Ionizing radiation can be divided into α, β, γ(X), n and other radiations according to the nature of the constituent particles. The source of ionizing radiation can be radionuclides (including natural and artificially produced), or nuclear reaction devices, such as reactors, colliders, accelerators, nuclear fusion devices, etc., and can also be used for medical diagnosis and treatment X-ray machine. [0003] ...

Claims

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Application Information

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IPC IPC(8): G01T1/36G06T19/00
CPCG01T1/362G06T19/006
Inventor 梁珺成刘皓然杨志杰范梓浩甘亚洲谭仲海
Owner NAT INST OF METROLOGY CHINA
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