Small ion pulse ionization chamber for radon measurement in underground space.

Radon, prevalent in underground spaces, requires continuous monitoring due to health risks. Traditional detectors are often expensive, bulky, and ill-suited for humid environments in underground spaces. This study presents a compact, cost-effective radon detector designed for long-term, online monitoring. It uses a small ionization chamber with natural airflow, avoiding the need for fans or pumps, and includes noise filtering and humidity mitigation. Featuring multi-point networking and easy integration capabilities, this detector significantly enhances radon monitoring in challenging, underground conditions. • The structure and characteristics of a small cylindrical ion-pulsed ionization chamber are described. • The detector has mechanical noise filtering, and some measures have been taken to reduce the effect of air humidity. • The design feasibility is discussed from the perspectives of theory, simulation and physical objects. [ABSTRACT FROM AUTHOR]