The Triple-Alpha Process ·
3 ⁴He → ¹²C
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.com · red-giant core · T ≈ 10⁸ K · resonance on a resonance
Carbon-12 made
0
Hoyle tries
0
phase
—
Alpha particle (⁴He)
Beryllium-8 (unbound, 8.2×10⁻¹⁷ s)
Hoyle state (7.654 MeV, +287 keV)
Carbon-12 ground state
Gamma emission (γ cascade)
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.com · The Triple-Alpha Process: How Three Helium Nuclei Build Carbon