Example: When electrons are showered on Uranium-235 at a slow speed, the heavy nucleus of Uranium-235 splits into two nuclei barium-141 and krypton-92 and three neutrons are emitted. mass) has been converted into energy according to Einsteins equation. A semi-empirical equation for fission threshold has been extended to include the effects of unpaired nucleons on the rate of spontaneous fission. The reactions in which the nucleus of an atom converts into new atoms and emits a large amount of energy are called Nuclear Reactions. Many highly radioactive particles are produced during a fission reaction. ![]() ![]() In a fission reaction, an atom splits into 2 or more lighter and smaller atoms. But the initial conditions are relatively simpler to achieve. This kind of reactions is very difficult to control. \( \newcommand\): (a) In this 2010 photo of Three Mile Island, the remaining structures from the damaged Unit 2 reactor are seen on the left, whereas the separate Unit 1 reactor, unaffected by the accident, continues generating power to this day (right). These fragments, or fission products, are about equal to half the original mass. Fission reactions occur when the neutrons get bombarded with unstable isotopes.
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