What kind of radiation does the Cesium-137 source primarily emit?

Cesium-137 primarily emits gamma radiation, which is a form of electromagnetic radiation. Gamma rays are high-energy photons that can penetrate various materials, including human tissue, making them significant in nuclear testing and material analysis. This property allows gamma radiation to be used effectively in various applications, such as industrial measurement and radiography.

In the case of Cesium-137, it also emits beta particles during its decay process, but the dominant form of radiation that is often utilized or considered in testing and gauging applications is gamma radiation due to its high penetration capability and the way it interacts with matter. Thus, identifying the type of radiation emitted by Cesium-137 is crucial for understanding its applications and safety protocols in nuclear gauge testing.