Which consequence results when insufficient moderator exists in a nuclear reactor?

💡 Explanation

If insufficient moderator exists within a reactor core, neutron moderation decreases, reducing the probability of neutron capture by uranium nuclei; this increases the average neutron kinetic energy via nuclear fission because high-energy neutrons poorly sustain the chain reaction, therefore the lack of moderation, rather than other issues, quickly leads to meltdown.

• Which consequence results when propagation velocity is mismatched?
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