State of an atomSmallest particle of an element which cannot be chemically d... or a nucleusPositively charged nucleus of an atom. Its diameter amounts ... with a higher energyAbility to do work or diffuse heat. The unit of energy is th... than that of its normal energetic state. The excessive energyAbility to do work or diffuse heat. The unit of energy is th... is generally emitted as photons (gamma quantumEnergy quantum of short-wave electromagnetic radiation.). Example: Ba-137m changes into the normal state of Ba-137 emitting a gamma quantumEnergy quantum of short-wave electromagnetic radiation. with the energyAbility to do work or diffuse heat. The unit of energy is th... of 662 keVKiloelectron volt; 1 keV = 1,000 eV; See 'Electron volt'..
EmissionThe discharge (e.g. solid, liquid or gaseous substances, sou... of a gamma quantumEnergy quantum of short-wave electromagnetic radiation. (gamma radiationHighly-energetic, short-wave electromagnetic radiation emitt..., y-radiation) from an excited atomic nucleusPositively charged nucleus of an atom. Its diameter amounts ...