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← ScienceWhich outcome results when enriched uranium-235 undergoes neutron inelastic scattering?
A)Sustained nuclear chain reaction
B)Increased neutron moderation by graphite
C)Doppler broadening, decreasing reaction rate✓
D)Control rods absorb surplus neutrons
💡 Explanation
Doppler broadening occurs because increased temperature causes uranium-238 isotopes to absorb more neutrons at specific energies through neutron inelastic scattering. Therefore, this slows the reaction rate rather than a chain reaction, due to neutron absorption instead of production.
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