Neutrons not generated directly during the nuclear fissionFission of an atomic nucleus into two parts of the same size..., but delayed as a consequence of a radioactive conversionIn nuclear technology the conversion of a substance in a fis... of fission productsNuclides generated by fission or subsequent radioactive deca.... Less than 1% of the neutrons involved in nuclear fissionFission of an atomic nucleus into two parts of the same size... are delayed. (See ‘neutrons, prompt’).