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← ScienceWhich outcome results when Xe-135 concentration spikes rapidly in a nuclear reactor?
A)Iodine pit formation accelerates sharply
B)Core temperature cannot be regulated✓
C)Delayed neutron fraction rises gently
D)Control rod effectiveness is enhanced
💡 Explanation
Xe-135 absorbs surplus neutrons; a rapid increase initiates reactor poisonimg. Chain reaction regulation fails because increased Xe-135 concentration demands extreme control rod adjustments, therefore reactor temperature diverges, rather than control being easily maintained or iodine pits intensifying.
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