Gamma rays are electromagnetic waves or photons emitted from the nucleus of an atom, typically with wavelengths of less than 3 pm. A highly penetrating type of nuclear radiation. Gamma ray emission is a decay mode by which the excited state of a nucleus de-excite to lower (more stable) state in the same nucleus.
Wavelengths from about 10-14 10-10m.
Gamma rays are used to sterilize food.
A level a gamma radiation flux on the order of 10E4 roentgens or higher.
Subjects: Nuclear and Particle Physics