![]() Developing technology to harness nuclear fusion as a source of energy for heat and electricity generation is the subject of ongoing research, but whether or not it will be a commercially viable technology is not yet clear because of the difficulty in controlling a fusion reaction. Fusion is the source of energy in the sun and stars. I understand why fission generates large amounts of energy when the nucleus is split, but then why does fusion generate such large amounts of energy. Nuclear energy can also be released in nuclear fusion, where atoms are combined or fused together to form a larger atom. The fundamental challenge is to achieve a rate of heat emitted by a fusion plasma that exceeds the rate of energy injected into the plasma. This reaction is controlled in nuclear power plant reactors to produce a desired amount of heat. (Updated December 2022) Fusion power offers the prospect of an almost inexhaustible source of energy for future generations, but it also presents so far unresolved engineering challenges. This process is called a nuclear chain reaction. These neutrons continue to collide with other uranium atoms, and the process repeats itself over and over again. Nuclear fission creates radioactive waste, unlike. Nuclear fusion produces less harmful radioactive waste and also produces more energy with safety as compared to nuclear fission. ![]() More neutrons are also released when a uranium atom splits. Nuclear fission releases energy when splitting atoms, while nuclear fusion releases energy by joining atoms. It may be considered the opposite of fission. Because the energy is derived from the action of nuclei, fusion is a form of nuclear energy. During nuclear fission, a neutron collides with a uranium atom and splits it, releasing a large amount of energy in the form of heat and radiation. What is Fusion Nuclei of lighter atoms such as hydrogen collide and fuse to produce nuclei of heavier atoms such as helium and release vast amounts of energy in the process this is the essence of fusion. All nuclear power plants use nuclear fission, and most nuclear power plants use uranium atoms. ![]() In nuclear fission, atoms are split apart, which releases energy. ![]()
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