Radon and daughter radioactive equilibrium identification system and method

A technology for identifying systems and radioactivity, applied in radiation measurement, X-ray energy spectrum distribution measurement, X/γ/cosmic radiation measurement, etc., can solve problems such as uneven adsorption, insufficient adsorption time, and inaccurate measurement results

Inactive Publication Date: 2018-05-18
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

At present, the method to balance radon and its progeny is to stand still for 2-3 hours, but if the adsorption time is not long enough, the adsorption is uneven, especially when there is rad

Method used

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  • Radon and daughter radioactive equilibrium identification system and method
  • Radon and daughter radioactive equilibrium identification system and method
  • Radon and daughter radioactive equilibrium identification system and method

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0036] Such as figure 1 As shown, a radioactive balance identification system for radon and its progeny, including a radiation probe, a data acquisition card, an energy spectrum acquisition control unit, a multi-channel pulse amplitude analyzer, and a balance identification and display system;

[0037] The data acquisition card is connected to the radiation probe, the energy spectrum acquisition control unit and the multi-channel pulse amplitude analyzer are respectively connected to the data acquisition card, and the balance identification and display system is connected to the channel pulse amplitude analyzer;

[0038] The energy spectrum acquisition control unit controls the data acquisition card to collect the analog pulse signal of the radiation probe and convert it into a digital pulse signal. The multi-channel pulse amplitude analyzer converts t...

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Abstract

The invention discloses a radon and daughter radioactive equilibrium identification system and method. The radon and daughter radioactive equilibrium identification system includes a radiation probe,a data acquisition card, a power spectrum acquisition control unit, a multichannel pulse-height analyzer, an equilibrium identification and display system, wherein the data acquisition card converts an analog pulse signal of the radiation probe into a digital pulse signal; the power spectrum acquisition control unit controls communication of the data acquisition card; the multichannel pulse-heightanalyzer converts the digital pulse signal into gamma power spectrum count; the equilibrium identification and display system performs data processing on the gamma power spectrum count to obtain theequilibrium coefficient; and according to the value range of the equilibrium coefficient, the radon and daughter radioactive equilibrium state can be provided and displayed. The radon and daughter radioactive equilibrium identification system is simple in structure, and dynamically monitors and identifies whether the radon and daughter in active carbon or other bodies containing radon achieve equilibrium.

Description

technical field [0001] The invention relates to the technical field of radioactivity measurement, in particular to a system and method for identifying the radioactivity balance of radon and its progeny. Background technique [0002] Activated carbon has a strong adsorption capacity for radon because of its porosity and large specific surface area. Activated carbon is cheap for measuring radon or radon precipitation rate, and can be reused after baking and drying. No power supply is required for monitoring. It has the advantages of large-scale investigation of radon and radon exhalation rate. As the most ideal integral static radon measurement method at present, activated carbon radon measurement technology has been widely promoted and applied in many fields. [0003] Radon is an alpha particle emitter, so the gamma energy spectrometer cannot directly detect it, but the decay daughters 214Pb and 214Bi of radon adsorbed in activated carbon are the main gamma emitters, when ra...

Claims

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Application Information

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IPC IPC(8): G01T1/36
CPCG01T1/362
Inventor 乐仁昌何志杰赖黎群
Owner FUJIAN NORMAL UNIV
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