Which instability arises when Xe-135 accumulates in nuclear reactors?

💡 Explanation

Iodine pit formation occurs because Xe-135 strongly absorbs neutrons. Reactor power dips which in turn reduces Xe-135 burnout and iodine decay creates more Xe-135; the positive feedback drives oscillations rather than stabilizing operation because of xenon poisoning.

• Which outcome occurs when using a real-world heat engine to emulate Carnot cycle at increasing frequency?
• Which condition precipitates accelerated austenite decomposition in weldments?
• Which effect limits signal propagation distance in a single-mode optical fiber?
• Which outcome occurs during the fabrication of nanoscale flash memory devices due to excessively thin insulating layers?
• Which outcome occurs when a diesel engine runs on fuel contaminated with water?
• Which consequence results when pressurized water reactor coolant enrichment decreases?