cesium-137

Cesium-137 is a radioactive isotope created during nuclear fission, such as in reactors or atomic bombs. It emits beta particles and gamma rays, which can be harmful at high exposure levels. Cesium-137 has a half-life of about 30 years, meaning it takes that long for half of it to decay. It behaves like potassium in the environment, so it can be absorbed by living organisms through food and water. Due to its persistence and radiation risk, cesium-137 is used in medical and industrial applications, but contaminated areas require careful management to prevent health hazards.