The change that an unstable nucleus undergoes is called disintegration or decay. When unstable nuclei disintegrate or decay, certain particles - alpha or beta particles - or bundles of energy called ...

Gamma radiation does not consist of particles but as short wavelength, high energy electromagnetic radiation emitted from unstable nuclei. It is normally emitted alongside alpha or beta radiation.

Alpha particles come from the nucleus of a radioactive atom. They consist of 2 protons and 2 neutrons; hence have a 2+ charge. A few centimeters of air will stop them. Alpha radiation consists of ...

Astatine-211 (At-211) is one of a handful of promising alpha emitting radioisotopes for cancer therapy. Its short 7.2-hour ...