What kind of particles are used to detect radon in homes?

Radon detection in homes primarily relies on the use of alpha particles. Radon is a radioactive gas that emits alpha radiation as it decays. Devices designed to detect radon typically include materials that are sensitive to these alpha particles. When radon gas interacts with certain surfaces, it can ionize these surfaces, creating detectable changes that indicate the presence and concentration of radon in the air.

By focusing on alpha particles, detection equipment can effectively quantify radon levels, which is critical for assessing health risks due to prolonged exposure. The other detection methods associated with beta particles, gamma rays, and X-rays generally pertain to different types of radiation and radioactive materials, but they are not the primary means of measuring radon gas specifically.