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← ScienceWhich risk increases when a tokamak's plasma current collapses?
A)Runaway electron generation✓
B)Fuel pellet ablation rate
C)Cryostat thermal contraction
D)Divertor plate outgassing
💡 Explanation
Runaway electrons increase because the collapsing magnetic field induces a large inductive voltage in the plasma that accelerates ambient thermal electrons. Therefore, runaway electron generation increases rather than alternative thermal plate effects because electromagnetic rather than thermal mechanisms are at play.
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