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← ScienceWhich risk inherently increases when a tokamak fusion reactor exceeds plasma density limits?
A)Divertor plate material sputtering increases✓
B)Fuel injection feedback oscillations emerge
C)Superconducting magnet quenches occur rapidly
D)Vacuum chamber wall thermal expansion accelerates
💡 Explanation
Increased plasma density can exceed the radiative cooling limits at the plasma edge; this causes a LOCA event. Increased particle flux initiates a sputtering erosion mechanism, because the energy is deposited on the divertor rather than radiated away. Therefore, sputtering increases rather than feedback oscillations for example.
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