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Sunday, 8 March 2015
Uranium - nuclear fuel
Uranium is the most widely used nuclear fuel in nuclear fission reactions.
For the particular makes the uranium so different from the other substances we must first consider some basic nuclear physics.
Atomelectronscomprises surrounding a core; in turn, a core consists of protons and neutrons. A protonhas a positive charge; aneutronhas no electric charge and is neutral. The positive charges of protons outward violently push attempt. But within the compact volume of a new class of core strength makes an appearance: an attractive force short range, immensely powerful, equally acts between protons and neutrons (which from this point of view, are all nucleons). The short-range nuclear force holds them together, opposing the repulsive effect of the positive charges of the protons. Thus, the neutrons act as "nuclear cement".
However, in a core which contains 92 protons (which is a uranium core) repulsive force between protons is expiring nuclear force. While there are 146 neutrons, the nucleus can hardly remain intact. This form of uranium containing 238 nucleons in total, called uranium-238. The next most likely arrangement is a uranium nucleus containing three fewer neutrons, uranium-235. Theseatomswith lighter nuclei comprise about 0.7% of uranium that occurs naturally (if the cores have the same number of protons, these nuclei thereof chemical element. well, all 92protoncore is the nucleus of anatomof uraniumatomswhose nuclei have the same number of protons but different numbers of neutrons are called isotopes of the element eg. uranium-238 and uranium-235 areisotopesof Uranium nucleus of uranium-235 has a unique property among more than two hundred types. nuclei found in nature in significant quantities The core of uranium-235 and is under a voltage close to the internal break,. a strayneutronapproaching you can break it completely.