https://doi.org/10.1351/goldbook.A00366
- (in radiochemistry) An interaction between a particle and its @A00401@ in which they both disappear.
- (in photochemistry) Two atoms or molecular entities both in an excited @ET07026@ interact often (usually upon collision) to produce one atom or molecular entity in an excited @ET07026@ and another in its ground @ET07026@. This phenomenon (annihilation) is sometimes referred to as @E02111@.See:singlet-singlet annihilation,spin conservation rule,triplet-triplet annihilation