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← ScienceWhich risk increases when magnetically confined fusion plasma cools?
A)Increased reaction cross-section magnitude
B)Reduced magneto-hydrodynamic stability✓
C)Elevated synchrotron radiation emission
D)Enhanced fusion product confinement
💡 Explanation
Reduced plasma temperature lowers plasma pressure, enabling external magnetic field perturbations to induce disruptive instabilities. This Magneto-hydrodynamic Instability grows because decreased thermal pressure cannot resist magnetic forces; therefore overall confinement drops, rather than leading to a controlled burn.
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