What do alpha track detectors measure in relation to radon?

Alpha track detectors specifically measure alpha particles that are emitted from the radioactive decay of radon gas. When radon undergoes alpha decay, it releases alpha particles that interact with the detector's surface, creating tracks. These tracks are subsequently counted to quantify the concentration of radon over time. This measurement is crucial because it directly correlates to the health risk associated with radon exposure, as alpha particles can penetrate lung tissue when inhaled and pose significant health risks, including lung cancer.

While other particles such as beta particles and gamma radiation may play a role in the radiation environment, they are not the focus of what alpha track detectors were designed to measure. Therefore, the clarity of what alpha track detectors specifically measure is foundational in understanding radon detection methods.