Americium in smoke detectors

Americium-241 is a radioactive element used in most household ionization smoke detectors. It emits small amounts of radiation that ionize the air inside a sensing chamber. When smoke particles enter the chamber, they disrupt this ionization process, triggering the detector's alarm to alert you of a potential fire. The amount of americium used is very small and contained safely within the device, making it effective and safe for home use. Its role is to provide a quick, reliable method to detect smoke and help ensure safety in case of fire.