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Incoming links: Laboratory evidence for the Hoyle state
Triple-alpha process Created 2026-09-28 Updated 2026-10-18
The triple-alpha process fuses three helium-4 nuclei into carbon-12 through an unstable beryllium-8 intermediate. Its steep temperature dependence can make helium-shell burning thermally unstable. The resonant triple-alpha temperature sensitivity isolates the role of the Hoyle state, while laboratory evidence for the Hoyle state explains how a particle spectrum tests the required nuclear level.