A sealed source emits which of the following?

A sealed source is a type of radioactive material that is encased in a protective shielding to prevent the release of its radioactive particles into the environment. While sealed sources can emit various types of radiation depending on the isotope used, gamma rays are particularly significant because they are electromagnetic radiation and can penetrate through a variety of materials, making them detectable at considerable distances.

Gamma rays are produced during the decay of certain radioactive isotopes, and even when contained within a sealed source, they can still present a radiation hazard, which is why safety protocols must be in place when handling or utilizing sealed sources.

Although alpha particles, beta particles, and neutrons are all forms of radiation that can be emitted by certain radioactive materials, sealed sources are often specifically associated with gamma rays due to their ability to provide useful imaging, therapeutic effects, and their pervasive reach without the necessity of direct contact with the radioactive material. Therefore, understanding that gamma rays are representative of the emissions from sealed sources is crucial in the context of radiation safety and management.