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← ScienceWhich outcome occurs when hydrogen plasma pressure drops below threshold in a tokamak?
A)Decreased likelihood of nuclear fusion✓
B)Increased fuel energy output
C)Enhanced alpha particle confinement
D)Reduced stability of plasma currents
💡 Explanation
The fusion reaction rate is highly dependent on plasma density; a reduction in pressure reduces density, which decreases collisions to allow fusion. Therefore, fusion likelihood declines drastically, because nuclear fusion requires overcoming the Coulomb barrier, rather than other plasma effects dominating.
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