![]() Developing technology to harness nuclear fusion as a source of energy for heat and electricity generation is the subject of ongoing research, but whether or not it will be a commercially viable technology is not yet clear because of the difficulty in controlling a fusion reaction. Figure 22. Fusion is the source of energy in the sun and stars. The self-sustained fission of nuclei is commonly referred to as a chain reaction, as shown in Figure 22.27. In a fission nuclear reactor, uranium-238 can be used to generate plutonium-239, which itself can be used in a nuclear weapon or as a nuclear-reactor fuel supply. Nuclear energy can also be released in nuclear fusion, where atoms are combined or fused together to form a larger atom. Each time one of these atoms splits (or fissions), more neutrons are released to split more atoms, creating a chain reaction. This reaction is controlled in nuclear power plant reactors to produce a desired amount of heat. This process is called a nuclear chain reaction. These neutrons continue to collide with other uranium atoms, and the process repeats itself over and over again. More neutrons are also released when a uranium atom splits. Computer generated artistic impression of fission. who 'instantly pronounced the fission reaction impossible and proceeded to prove mathematically to everyone in the room that someone must have made a. Other particles (neutrons, for example) and. By Adam Mann published 9 July 2021 Fission involves splitting atoms fusion is about combining them. The fission process often produces gamma rays and releases a very large amount of energy, even by the energetic standards of radioactive decay. During nuclear fission, a neutron collides with a uranium atom and splits it, releasing a large amount of energy in the form of heat and radiation. Nuclear fission is a process in which a nucleus divides into two (or sometimes even three) lighter nuclei. Fission is a nuclear reaction or radioactive decay process in which the nucleus of an atom splits into two or more smaller, lighter nuclei and often other particles. ![]() All nuclear power plants use nuclear fission, and most nuclear power plants use uranium atoms. In nuclear fission, atoms are split apart, which releases energy.
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