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Which outcome occurs when the ITER tokamak reaches ignition?

A)Runaway fusion chain reaction occurs
B)Self-sustaining plasma heating is achieved
C)Tritium breeding rate plummets rapidly
D)Magnetic confinement degrades catastrophically fast

💡 Explanation

Self-sustaining heating results because the alpha particles, a product of deuterium-tritium fusion, deposit their energy into the plasma via alpha heating, rather than requiring continuous external energy input; therefore, a sustained reaction occurs, not a runaway effect.

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