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← ScienceWhich outcome occurs as uranium fuel depletes inside generation IV molten salt reactor?
A)Delayed neutron fraction decreases continually✓
B)Reactor kinetics become increasingly unstable
C)Xenon poisoning effects diminish extensively
D)Neutron flux profile remains uniformly constant
💡 Explanation
As fissile uranium-235 decreases, the ratio of neutrons born delayed from fission product decay decreases via neutron kinetics, because the **decreased delayed neutron fraction** reduces control responsiveness; therefore reactors need continuous adjustment of control rods, rather than unstable operation under fixed settings.
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