Nuclear fission - Wikipedia
Nuclear fission is a reaction in which the nucleus of an atom splits into two or more smaller nuclei. The fission process often produces gamma photons, and releases a very large amount of energy even by the energetic standards of radioactive decay.
Fission and Fusion: What is the Difference? - Department of Energy
2021年4月1日 · Fission occurs when a neutron slams into a larger atom, forcing it to excite and split into two smaller atoms—also known as fission products. Additional neutrons are also released that can initiate a chain reaction. When each atom splits, a tremendous amount of energy is released.
DOE Explains...Nuclear Fission | Department of Energy
A nuclear fission reaction is a process that begins when a neutron or other particle strikes a nucleus. This creates fragments of the original nucleus. It also creates new neutrons that can then collide with other nuclei to cause more nuclear reactions.
Nuclear fission | Examples & Process | Britannica
2024年12月18日 · Nuclear fission, subdivision of a heavy atomic nucleus, such as that of uranium or plutonium, into two fragments of roughly equal mass. The process is accompanied by the release of a large amount of energy.
What is nuclear fission? | Space
2022年9月21日 · Nuclear fission is the process of breaking large atomic nuclei into smaller atomic nuclei to release a large amount of energy.
What Is Nuclear Fission? - ScienceAlert
Nuclear fission is the splitting of an atom's nucleus to create two (or more) lighter elements. Though it can occasionally occur spontaneously in isotopes of some heavy elements, such as thorium and uranium, it is usually triggered by a neutron impacting the nucleus with the right amount of force.
Nuclear Fission | Definition, Reaction & Examples - nuclear …
Nuclear fission is a nuclear reaction in which the nucleus of an atom splits into smaller parts (lighter nuclei). The fission process often produces free neutrons and photons (in the form of gamma rays) and releases a large amount of energy.
Nuclear Fission Definition and Examples - Science Notes and …
2023年5月13日 · Nuclear fission is a nuclear reaction or a radioactive decay process in which the nucleus of an atom splits into two or more smaller, lighter nuclei. This process often produces gamma photons and releases a significant amount of energy. The term “fission” comes from the Latin word fissio, which means “a cleaving” or “splitting.”
What is fission? - Live Science
2023年7月19日 · Fission is the process by which an atom splits into two, generating two smaller atoms and a tremendous amount of energy. Fission powers nuclear bombs and power plants.
Nuclear fission - Atomic Reactions, Energy Release, Chain …
2024年12月18日 · Fission can be induced by exciting the nucleus to an energy equal to or greater than that of the barrier. This can be done by gamma-ray excitation (photofission) or through excitation of the nucleus by the capture of a neutron, proton, or …