Chemistry & Chemical Reactivity
Solutions
Chemistry & Chemical Reactivity
In a nuclear reactor, what is a moderator and what is its function?
Interpretation: The moderator and its function in a nuclear reactor have to be explained.
Concept Introduction:
All nuclear reactors are devices designed to maintain a chain reaction producing a steady flow of neutrons generated by the fission of heavy nuclei. Moderation is the process of the reduction of the initial high speed of the neutron. Since energy is conserved, this reduction of the neutron speed takes place by transfer of energy to a material is called a moderator.
A moderator in a nuclear reactor is used to slow down the neutrons.
The neutrons produced by fission are very fast, around
Neutrons lose energy by colliding with other nuclei and transferring some kinetic energy
Chapter 25 Solutions
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