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← ScienceWhich outcome accelerates a fission chain reaction in uranium?
A)Neutron moderation increases absorption probability✓
B)Delayed neutron release stabilizes reactor
C)Control rod insertion reduces criticality
D)Coolant voiding decreases reactivity feedback
💡 Explanation
Increased neutron moderation raises fission probability because it enhances the likelihood of U-235 absorbing neutrons and undergoing nuclear fission following the neutron thermalization mechanism. Therefore, reactivity increases; rather than being suppressed by control rods or further cooling slowing down neutrons.
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