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Which 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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