<P> In nuclear physics and nuclear chemistry , nuclear fission is either a nuclear reaction or a radioactive decay process in which the nucleus of an atom splits into smaller parts ( lighter nuclei ) . The fission process often produces free neutrons and gamma photons , and releases a very large amount of energy even by the energetic standards of radioactive decay . </P>
<P> In nuclear physics and nuclear chemistry , nuclear fission is either a nuclear reaction or a radioactive decay process in which the nucleus of an atom splits into smaller parts ( lighter nuclei ) . The fission process often produces free neutrons and gamma photons , and releases a very large amount of energy even by the energetic standards of radioactive decay . </P>
where does the energy come from in a nuclear fission reaction
where does the energy come from in a nuclear fission reaction
The fission process
The fission process