The 12C(α, γ)16O reaction at stellar energies

K. Langanke, S. E. Koonin

Research output: Contribution to journalArticlepeer-review


The most recent experimental data on the 12C(α, γ)16O reaction at energies Ec.m. ≲ 3 MeV have been analysed to determine the astrophysical S-factor. The absolute E2 capture cross section was calculated in a microscopically based direct capture model, while the E1 cross section was described by the hybrid R-matrix model. We find that the E2 rate is less than 4% of the E1 rate at astrophysically important energies. The two sets of data yield S-factors at Ec.m. = 300 keV of 0.15 MeV · b and 0.34 MeV · b.

Original languageEnglish (US)
Pages (from-to)334-348
Number of pages15
JournalNuclear Physics, Section A
Issue number2
StatePublished - Nov 28 1983

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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