What type of radiation does the Electret Ion Chamber measure?

The Electret Ion Chamber is specifically designed to measure ionizing radiation, which encompasses a broad spectrum including Alpha, Beta, and Gamma radiation. The primary mechanism involves the interaction of radiation with air within the chamber, leading to ionization. This ionization then influences the charge of an electret (a type of charged insulator) that is placed inside the chamber.

Alpha particles, despite having very low penetration ability and being stopped by a sheet of paper, can still be detected if they are emitted within or very near the chamber. Beta particles and Gamma rays, which are more penetrating, can also lead to ionization within the chamber and thus contribute to the measurements.

Measuring the three types of radiation ensures comprehensive results in varied environments, making the Electret Ion Chamber a versatile tool in radon measurement and radiation detection. This capability differentiates it from devices that are limited to measuring only one type of radiation, which would not capture the full spectrum of potential radon or environmental radiation exposure.