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← ScienceWhich outcome occurs when helium ash accumulates during D-T fusion?
A)Increases neutron flux production linearly
B)Slows plasma burn rate exponentially
C)Increases Lawson criterion achievement margin
D)Reduces the effective plasma temperature✓
💡 Explanation
Helium ash build-up reduces temperature because *radiative losses* dissipate the plasma's energy through bremsstrahlung radiation. Therefore, plasma temperature drops, rather than burn rate increasing as more fuel is needed with high helium content.
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