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.
DOE Explains...Nuclear Fission | Department of Energy
Nuclear fission is the process where the nucleus of an atom splits into two or more smaller nuclei and other particles. These particles can include neutrons, alpha particles (helium nuclei), beta particles (electrons), and gamma rays (which consist of particles of light, or photons).
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.
Nuclear fission | Examples & Process | Britannica
2024年11月5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. This process is usually done by forcing the nuclei to absorb...
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 .
13.7: The Discovery of Fission and the Atomic Bomb
2024年10月17日 · Fission and Chain Reactions. In both fission and fusion, large amounts of energy are given off in the form of heat, light, and gamma radiation. Nuclear fission was discovered in the late 1930s when \(\ce{U}\)-235 nuclides were bombarded with neutrons and were observed to split into two smaller-mass nuclei.
Nuclear fission - Stages, Reactions, Energy | Britannica
2024年11月5日 · Nuclear fission - Stages, Reactions, Energy: A pictorial representation of the sequence of events in the fission of a heavy nucleus is given in Figure 3. The approximate time elapse between stages of the process is indicated at the bottom of the Figure.
Fission and Fusion - Chemistry LibreTexts
2023年3月10日 · Fission is the splitting of a heavy nucleus into lighter nuclei and fusion is the combining of nuclei to form a bigger and heavier nucleus. The consequence of fission or fusion is the absorption or release of energy. Protons and neutrons make up a nucleus, which is the foundation of nuclear science.