Modeling analysis demonstrates net engineering gain in a deuterium-helium-3 tandem-mirror reactor, highlighting viable low-neutron fusion power.
A deuterium-helium-3 tandem-mirror burner in two housings that closes on measured efficiencies. Synchrotron reabsorption scales with machine size; the engineering gain is Q_E=1.318 at a 5.44% neutron fraction - low-neutron, never aneutronic. Closure is requirement-class: an end-plug density ratio is the binding open gate, reported as a band under uncertainty. New version (2.0).
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Ford et al. (2026) studied this question.
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