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Nuclear fission splits a heavy atomic nucleus into two or more smaller nuclei.
Nuclear fission is a nuclear reaction in which the nucleus of a heavy atom splits into two or more smaller nuclei, called fission products. The process may occur spontaneously or be induced, commonly when a fissile nucleus such as uranium-235 or plutonium-239 absorbs a neutron. Fission usually releases additional neutrons, gamma radiation, and a very large amount of energy, primarily as the kinetic energy of the fission fragments. Because the released neutrons can trigger further fission reactions, nuclear fission can produce a chain reaction. Controlled chain reactions are used in nuclear reactors, while uncontrolled reactions can occur in nuclear weapons. Fission is also a form of nuclear transmutation because the resulting nuclei are different elements from the original nucleus.
Nuclear fission splits a heavy atomic nucleus into two or more smaller nuclei.
The reaction commonly releases neutrons, gamma rays, and approximately 200 MeV of energy per event.
Fission can be spontaneous or induced by neutron absorption.
Released neutrons can sustain a nuclear chain reaction, which may be controlled in reactors or uncontrolled in weapons.
A nuclear reaction in which an atomic nucleus splits into two or more smaller nuclei and releases energy.
The smaller daughter nuclei formed when a heavy atomic nucleus undergoes fission.
A nuclide that can readily undergo fission after absorbing a slow or thermal neutron.
A self-sustaining sequence in which neutrons released by fission induce additional fission reactions.
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