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

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

Nov 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983nupha.410..334l&link_type=abstract

Nuclear Physics A, Volume 410, Issue 2, p. 334-348.

Physics

Nuclear Physics

56

Scientific paper

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.

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