Comparative physics analysis evaluates candidate fusion fuels across reaction metrics, indicating deuterium-tritium optimizes breeding while deuterium-helium-3 favors clean power generation.
An advanced-fuel scorecard grading deuterium-tritium, deuterium-deuterium, deuterium-helium-3, and proton-boron-11 on one ruler: reactivity, temperature, neutron fraction, tritium logistics, fuel availability, and demonstrated gain. The Kronos architecture follows the scorecard, not the aneutronic ideal: deuterium-tritium where the product is the neutron and the bred material, deuterium-helium-3 where the product is power. Analysis of public reaction physics; no economics.
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Ford et al. (2026) studied this question.
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