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← ScienceWhich outcome results when elevated Uranium-235 enrichment impacts reactor control?
A)Reduced neutron moderation effectiveness occurs
B)Elevated delayed neutron fraction happens
C)Increased chain reaction sensitivity forms✓
D)Greater gamma radiation shielding prevents
💡 Explanation
Increased U-235 enrichment elevates prompt-criticality risk as neutron flux control from neutron absorbers decreases which causes the increased chain reaction sensitivity. Therefore, less control results from prompt neutrons rather than delayed neutron fractions because the reaction accelerates beyond control systems.
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