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Which outcome occurs when plasma pressure is externally reduced within a tokamak undergoing deuterium-tritium fusion?

A)Increased alpha particle confinement time
B)Enhanced resistive instabilities growth
C)Decreased neutral beam penetration
D)Reduced divertor heat load asymmetry

💡 Explanation

Enhanced instability appears with reduced plasma pressure because the ballooning mode instability growth rate increases causing disruptions. Enhanced resistive instabilities are, therefore, present rather than increased alpha confinement, because that would need increases, not reductions, to confinement parameters.

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