What is nuclear fusion?
Nuclear fusion :
The nuclear fusion is the combining of nuclei to form a bigger and heavier nucleus.
Nuclear fusion, in which two light nuclei combine to produce a heavier, more stable nucleus, is the opposite of nuclear fission. As in the nuclear transmutation reactions , the positive charge on both nuclei results in a large electrostatic energy barrier to fusion. This barrier can be overcome if one or both particles have sufficient kinetic energy to overcome the electrostatic repulsions, allowing the two nuclei to approach close enough for a fusion reaction to occur.
The principle is similar to adding heat to increase the rate of a chemical reaction. Fusion reactions are most exothermic for the lightest element.
For example, in a typical fusion reaction, two deuterium atoms combine to produce helium-3, a process known as deuterium–deuterium fusion (D–D fusion):