WHAT IS FISSION?
The fission interaction is the basis of all nuclear chain reactions, without it there would be no nuclear reaction. In fission, the neutron bombards an atom of fissionable material splitting it apart and producing additional free neutrons to perpetuate the reaction, as well as heat energy and radiation energy. A fissionable element will have a heavy nucleus from which an average of two or three neutrons are emitted when it is struck by a neutron.