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>> Ignition is a runaway process, so small changes in the input can result in large changes in the output. Hydrogen bombs, which also use a burning plasma as was demonstrated here, also suggest that the gain and yield may be scaled up.

Hydrogen bombs are driven by indirect implosion by a nuclear primary. It isn't a runaway process; the yield of a secondary is limited by the implosion achieved by the primary. Most hypothetical designs for an inertial fusion power plant achieve similar energy gains.



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