Nuclear fusion is a reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles (neutrons or protons). The difference in mass between the reactants and products is manifested as either the release or absorption of energy. This difference in group arises due to the difference in nuclear binding energy between the atomic nuclei before and after the reaction. Nuclear fusion is the process that powers active or central sequence stars and other high-magnitude stars, where large amounts of energy are released. Nuclear fusion
- The U.S. Department of Energy (DOE) and DOE's National Nuclear Security Administration (NNSA) today announced the achievement of fusion ignition at Lawrence Livermore National Laboratory (LLNL)—a significant scientific breakthrough decade in the making that will pave the way for advancements in national defense and the future of clean power
- To pursue this concept, LLNL built a series of increasingly powerful laser systems, creating NIF, the world's largest and most energetic laser system. NIF—located at LLNL in Livermore, Calif.—is the size of a sports stadium and uses powerful laser beams to create temperatures and pressures like those in the cores of stars and giant planets and inside exploding nuclear weapons
- The clean energy solution has attracted about 1.9bn (£1.6bn) over the past decade.
- There was also a breakthrough in late 2021 when researchers at the Joint European Torus (JET) facility in Oxford released 59 megajoules of fusion - almost tripling the previous 21.7-megajoule record from 1997.