Which material outcome occurs during sustained nuclear fission?

💡 Explanation

Neutron absorption cross-sections increase during fuel burn-up because accumulating fission byproducts like Xenon-135 readily capture neutrons. Therefore, neutron captures rise, rather than the criticality decaying, because reaction rates need not decrease.

• Which outcome develops from elevated shear in centrifugal pumps?
• Which consequence results when extreme relativistic effects warp spacetime around a star?
• Which outcome occurs when the working fluid in a turbine's closed Rankine cycle superheats?
• Which consequence results when a highly doped semiconductor experiences breakdown?
• Which outcome occurs when fluid laminar flow transitions?
• Which risk increases when a high-energy electromagnetic pulse couples rapidly across a long, unshielded transmission line?