![]() ![]() So, one can release energy either by splitting very large nuclei, like uranium with 92 protons, to get smaller products, or fusing very light nuclei, like hydrogen, with just one proton to get bigger products. It turns out that the most tightly bound atomic nuclei are around the size of iron, which has 26 protons in the nucleus. ![]() The mass of small nuclei is less than that. The 10 Greatest Explosions Ever Fission bombs, like those used to devastate the Japanese cities of. If a nuclear reaction produces nuclei that are more tightly bound than the originals then energy will be produced by fusion, and for fission the opposite is true. Nuclear Fission: The process by which the nuclei of greater mass are split into lighter nuclei, using neutrons. The difference between thermonuclear bombs and fission bombs begins at the atomic level. The key to why some atoms split and release energy while others fuse to do the same lies in how tightly the protons and neutrons are held together. Binding energy Smaller nuclei fuse and release energy until at iron no more energy is released by fusion. This is why fusion is still in the research and development phase – and fission is already making electricity. The reasons that have made fusion so difficult to achieve to date are the same ones that make it safe: it is a finely balanced reaction which is very sensitive to the conditions – the reaction will die if the plasma is too cold or too hot, or if there is too much fuel or not enough, or too many contaminants, or if the magnetic fields are not set up just right to control the turbulence of the hot plasma. ![]() Resulta que los núcleos atómicos unidos con más fuerza tienen el tamaño aproximado del hierro, que tiene 26 protones en el núcleo. and world fusion energy research programs are developing something that no one will want or can afford. Unlike nuclear fission, the nuclear fusion reaction in a tokamak is an inherently safe reaction. Si una reacción nuclear produce núcleos que están unidos con más fuerza que los originales, entonces la energía será de fusión, y de lo contrario será de fisión. Fusion: Ten Times More Expensive Than Nuclear Power By Robert L. ![]()
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