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Which outcome diminishes a fusion reactor's energy output due to helium-4 production?

A)Increased neutron absorption probability
B)Plasma radiative energy loss
C)Depleted fuel binding energy
D)Elevated poloidal magnetic field

💡 Explanation

Plasma radiative energy loss increases because helium-4 radiates X-rays when colliding with electrons, inhibiting superheating. Therefore, the fusion reaction rate decreases rather than increasing because helium contributes to radiative losses that diminish plasma confinement.

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