Nuclear fusion - Wikipedia
Nuclear fusion is a reaction in which two or more atomic nuclei (for example, nuclei of hydrogen isotopes deuterium and tritium), combine to form one or more atomic nuclei and neutrons. The difference in mass between the reactants and products is manifested as either the release or absorption of energy.
Nuclear fusion | Development, Processes, Equations, & Facts
2024年12月19日 · Nuclear fusion, process by which nuclear reactions between light elements form heavier elements. In cases where interacting nuclei belong to elements with low atomic numbers, substantial amounts of energy are released.
DOE Explains...Fusion Reactions | Department of Energy
Fusion reactions power the Sun and other stars. In fusion, two light nuclei merge to form a single heavier nucleus. The process releases energy because the total mass of the resulting single nucleus is less than the mass of the two original nuclei. The leftover mass becomes energy.
What is Nuclear Fusion? - International Atomic Energy Agency
2022年3月31日 · Nuclear fusion is the process by which two light atomic nuclei combine to form a single heavier one while releasing massive amounts of energy. Fusion reactions take place in a state of matter called plasma — a hot, charged gas made of positive ions and free-moving electrons with unique properties distinct from solids, liquids or gases.
World's largest nuclear fusion reactor is finally completed. But it …
2024年7月3日 · The world's largest fusion reactor has finally been assembled, but it won't run for another 15 years, project scientists have announced.
Nuclear Fusion - Definition, Occurrence, Examples, Applications
Nuclear fusion is a nuclear reaction that combines two or more small atoms to form a large atom. It does not occur naturally. The universe is full of instances of nuclear fusion reactions.
What Is Nuclear Fusion? Definition and Examples - Science Notes …
2023年4月30日 · Nuclear fusion is a type of nuclear reaction where two or more atomic nuclei combine and form one or more heavier nuclei. The process of fusion forms many of the elements of the periodic table , plus it offers an opportunity for limitless energy production.
Nuclear fusion explained - Institute of Physics
First, two protons (hydrogen atoms stripped of their electrons) react to produce a deuteron, a positron and a neutrino. Then the deuteron, 2 H, captures a proton to form the helium isotope 3 He (helium-3), and then two 3 He nuclei fuse to form 4 He with the emission of two protons.
9.6: Fusion - How the Elements Formed - Chemistry LibreTexts
Useful fusion reactions require very high temperatures for their initiation—about 15,000,000 K or more. At these temperatures, all molecules dissociate into atoms, and the atoms ionize, forming plasma. These conditions occur in an extremely large number of locations throughout the universe—stars are powered by fusion. Humans have already ...
Basic fusion physics | IAEA - International Atomic Energy Agency
Energy obtained from fusion and fission reactions is based on differences in the nuclear binding energy. The mass of the products of a fusion reaction is smaller than the mass of its reactants. The difference or "missing mass" is converted into energy in …