Radon measurement chamber

Abstract

The invention discloses a radon measurement chamber. The chamber comprises a collecting barrel body, wherein the bottom of the collecting barrel body is arranged to be open, a lower bottom plate is arranged at the bottom of the collecting barrel body, the collecting barrel body is fixedly connected with the lower bottom plate through screws, a circuit board is arranged in the lower bottom plate, and a mounting groove is formed in the axis of the lower bottom plate. According to the chamber, the positively charged radon is pushed to the position of the PIPS semiconductor detector through the voltage difference, alpha particles generated by decay are detected by the PIPS semiconductor detector, a pulse model is outputted to an external signal processing circuit, and radon concentration of the measured indoor air is calculated according to the radioactive decay equation, the measurement time and other parameters. The radon measurement chamber is good in sealing performance, reasonable inelectric field arrangement and high in radon daughter collection efficiency, the effect of enhancing the anti-interference capability of the detector is achieved through cooperation of conductive rubber physical isolation and the aluminum shell, and radon measurement accuracy is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of radon concentration measurement, and in particular relates to a radon measurement room. Background technique [0002] With the development of my country's economy and the improvement of housing conditions, the problem of environmental radon has become more and more prominent. Radon is one of the causes of lung cancer among residents, and it is the second most important cause of lung cancer after smoking. In the past ten years, the World Health Organization has announced that 50% of the natural radiation received by people is caused by radon in the environment, so the measurement of radon has gradually become a topic of public concern. [0003] Usually, the probe capture method is used to estimate the molecular content in the air. Since the α particles produced by the decay of different nuclides have different energies, the amplitudes of the electrical signals they generate in the detector are also differ...

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Problems solved by technology

[0003] Usually, the probe capture method is used to estimate the molecular content in the air. Since the α particles produced by the decay of different nuclides have different energies, the amplitudes of the electrical signals they generate in the detector are also different. In the subsequent circuit of the detector, these different amplitudes The electrical signal of the electrical signal is divided into several parts, which are called regions of interest (ROI). The number of electrical signals in these regions of interest corresponds to the number of corresponding nuclides. At present, there are many interferences in the actual measurement , affecting the measurement accuracy

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