Cesium

Cesium-137 is a radioactive isotope of cesium that is produced during nuclear fission, such as in nuclear reactors or atomic bombs. It has a half-life of about 30 years, meaning it takes that long for half of its radioactive atoms to decay. Cesium-137 emits beta and gamma radiation, which can be harmful to human health and the environment. It is used in various applications, including medical treatments, industrial gauging devices, and research. However, due to its radioactivity, precautions are necessary to limit exposure and manage its presence in the environment.