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.