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← ScienceWhich consequence results when neutron moderation fails in critical fission?
A)Chain reaction rate decreases rapidly
B)Fuel rods experience runaway overheating✓
C)Increased production of useful isotopes
D)Plasma confinement field exponentially weakens
💡 Explanation
Runaway overheating develops because thermal neutrons fail to initiate further fissions via **neutron absorption** causing energy deposition, therefore the fuel rods overheat rather than having a sustained, controlled reaction because neutron energies rise reducing fission probability.
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