👉 Radioactivities are a type of electromagnetic radiation that is used in various applications, including medical imaging and remote sensing. Radioactivity refers to the spontaneous emission of unstable nuclei from natural or artificial sources, such as nuclear reactions, radioactive decay, and cosmic rays.
Radioactivities can be classified into several categories based on their properties and characteristics:
1.
Neutron-irradiated substances:
These are materials that have been irradiated with neutrons, resulting in the release of neutrons from the nuclei