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← ScienceWhich consequence results when xenon gas accumulates inhomogeneously in a nuclear reactor core?
A)Spontaneous, localized power oscillations start✓
B)Fuel cladding reaches creep rupture threshold
C)Control rod effectiveness substantially increases
D)Neutron flux distribution becomes extremely uniform
💡 Explanation
Localized xenon buildup leads to spatial oscillations because xenon-135 strongly absorbs neutrons, diminishing fission locally; therefore, power surges occur rather than a stabilized flux, because other areas compensate, amplifying the effect of neutron absorption.
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