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

K. Langanke; S. E. Koonin

doi:10.1016/0375-9474(83)90206-3

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

K. Langanke, S. E. Koonin

Research output: Contribution to journal › Article › peer-review

Abstract

The most recent experimental data on the ¹²C(α, γ)¹⁶O reaction at energies E_c.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 E_c.m. = 300 keV of 0.15 MeV · b and 0.34 MeV · b.

Original language	English (US)
Pages (from-to)	334-348
Number of pages	15
Journal	Nuclear Physics, Section A
Volume	410
Issue number	2
DOIs	https://doi.org/10.1016/0375-9474(83)90206-3
State	Published - Nov 28 1983

ASJC Scopus subject areas

Nuclear and High Energy Physics

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

abstract = "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.",

author = "K. Langanke and Koonin, {S. E.}",

note = "Funding Information: {\textquoteright} Supported in part by the National Science Foundation [PHY82-07332 and PHY79-236381. * On leave from the University of Miinster.",

year = "1983",

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doi = "10.1016/0375-9474(83)90206-3",

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T1 - The 12C(α, γ)16O reaction at stellar energies

AU - Langanke, K.

AU - Koonin, S. E.

N1 - Funding Information: ’ Supported in part by the National Science Foundation [PHY82-07332 and PHY79-236381. * On leave from the University of Miinster.

PY - 1983/11/28

Y1 - 1983/11/28

N2 - 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.

AB - 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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ER -

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

Abstract

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