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← ScienceWhich constraint causes helium accumulation to inhibit fusion?
A)Increased neutron cross-section absorbs energy
B)Increased Coulomb barrier inhibits reactions
C)Increased plasma disrupts magnetic confinement
D)Increased radiation pressure quenches burning✓
💡 Explanation
Helium 'ash' production results from deuterium-tritium fusion. Accumulation leads to increased Bremsstrahlung radiation via Bremsstrahlung, therefore, radiation pressure quenches fusion, rather than stronger coulombic forces or less abundant neutron absorption.
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