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← ScienceWhich outcome occurs due to decreased neutron moderator density during nuclear fission?
A)Reduced neutron capture probability increases reactivity✓
B)Enhanced radiation shielding decreases thermal output
C)Increased fuel enrichment stabilizes fission rates
D)Accelerated decay product removal yields higher power
💡 Explanation
Reduced moderator density decreases neutron moderation, thus lowering the probability of neutrons being captured by uranium, because there's a lower likelihood of initiating further fission reactions. Therefore reactivity declines rather than increasing, due to poorer neutron thermalization.
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