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Nuclear fusion is the process that powers active or main-sequence stars and other high-magnitude stars, where large amounts of energy are released. A nuclear fusion process that produces atomic nuclei lighter than iron-56 or nickel-62 will generally release energy.
Artist's illustration showing the life of a massive star: Nuclear fusion converts lighter elements into heavier ones; when fusion no longer generates enough pressure to counteract gravity, the star collapses into a black hole. During this collapse, energy may be released as a momentary burst of gamma-rays aligned to the axis of rotation.
Fusion is the rate of fusion energy produced by the plasma; Number density is the density in particles per unit volume of the respective fuels (or just one fuel, in some cases) Cross section is a measure of the probability of a fusion event, which is based on the plasma temperature; Energy per reaction is the energy released in each fusion reaction
Advances in the potential energy source may not be about electricity, at least at first.
Tokamak fusion energy 2023 6.9 × 10 7 J JET [300] ICF fusion energy: 2022: 3.15 × 10 6 J: NIF [286] Delivering 2.05 megajoules (MJ) of light energy to the target, resulting in 3.15 MJ of fusion energy output from appr. 400 MJ electric energy to drive the lasers. ICF shot rate: 2013
Fusion processes are very sensitive to temperature so the star can produce more energy to retain hydrostatic equilibrium, at the cost of burning through successive nuclear fuels ever more rapidly. Fusion produces less energy per unit mass as the fuel nuclei get heavier, and the core of the star contracts and heats up when switching from one ...
The kinetic energy of the resulting photoelectron is equal to the energy of the incident gamma photon minus the energy that originally bound the electron to the atom (binding energy). The photoelectric effect is the dominant energy transfer mechanism for X-ray and gamma ray photons with energies below 50 keV (thousand electronvolts), but it is ...
Since nuclear fusion produces no planet-warming greenhouse gas emissions, news outlets referred to fusion as “the ‘holy grail' of carbon-free, clean energy” and asserted as fact that ...