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← ScienceWhich risk increases when fusion reactors experience thermal runaway?
A)Rapid plasma confinement degradation✓
B)Neutron activation of vessel walls
C)Increased tritium breeding efficiency
D)Reduced helium ash accumulation
💡 Explanation
Thermal runaway causes increased plasma temperature, and therefore drastically elevates the rate of instabilities. The electromagnetic confinement weakens because higher temperatures increase kinetic energy of the plasma particles, rather than maintaining the equilibrium with the magnetic field.
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