9/8/2023 0 Comments Nuclear fusion vs fission![]() If instead you fuse very light nuclei to get bigger products, energy is again released because the nucleons in the products are more tightly bound than in the original nuclei. Thus, if you split a nucleus that is much larger than iron into smaller fragments, you will release energy because the smaller fragments are at a lower energy than the original nucleus. The quantum mechanical effects on helium-3 and helium-4 are significantly different because with two protons, two neutrons, and two electrons, helium-4 has an overall spin of zero, making it a boson, but with one fewer neutron, helium-3 has an overall spin of one half, making it a fermion. It turns out that the most tightly bound atomic nuclei are around the size of iron-56. If a nuclear reaction produces nuclei that are more tightly bound than the originals, then the excess energy will be released. The key is in how tightly the nucleons are held together in a nucleus. ![]() Scientists from more than 50 countries have been trying to recreate it on Earth since the 1960s. Nuclear fission is a process in which a nucleus splits into two smaller nuclei. Nuclear fusion is the process which gives the Sun its energy. Fusion reactions between light elements, like fission reactions that split heavy elements, release energy because of a key feature of nuclear matter called the binding energy, which can be released through fusion or fission. Fusion is where two light atomic nuclei combine and release energy, while fission is the process of splitting two heavy, unstable atomic nuclei into two lighter. ![]() Nuclear fusion is a process in which two nuclei join to form a larger nucleus. While the fission reactions that power traditional nuclear power plants split atoms apart, fusion works by forcing them together, under extremely high temperatures, to overcome the usual repulsive. Fusion and fission are similar in that they both release large amounts of energy.
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