4
Question
A moderator is used in nuclear reactors in order to ________.
A moderator is used in nuclear reactors in order to ________.
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Solution
The correct option is C slow down 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).
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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