the function of moderator in a nuclear reactor is to (a) decrease the speed of neutrons (b) increase the speed of neutrons (c) decrease the speed of electrons (d) increase the speed of electron
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the function of moderator in a nuclear reactor is to decrease the speed of neutrons
A moderator is used in nuclear reactors in order to slow down the speed of neutrons.
In nuclear engineering, a neutron moderator is a medium that reduces the speed of fast neutrons, thereby turning them into thermal neutrons capable of sustaining a nuclear chain reaction involving uranium-235 or a similar fissile nuclide.
Clearly, an obvious way to make a reactor work, and to make use of this characteristic of the 235U(n,f) cross-section, is to slow down the fast, fission neutrons. This can be accomplished, for example, when the neutrons collide with nuclei and scatter in some substance (a moderator).
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decrease the speed of netron
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