Alpha capture on 14C and its astrophysical implications

doi:10.1016/0375-9474(92)90692-D

Nuclear Physics A

Volume 548, Issue 3, 19 October 1992, Pages 414-426

https://doi.org/10.1016/0375-9474(92)90692-D Get rights and content

Abstract

The reaction ¹⁴C(α, γ)¹⁸O has been measured in the alpha energy range of E_α = 1.14−2.33 MeV. The resonance strengths of the 4⁺ resonance at E_α = 1.14 MeV and of the 1⁻ resonance at E_α = 1.79 MeV have been measured relative to the ¹⁴C(p, γ)¹⁵N resonance at E_p=0.528 MeV. Additionally, two nonresonant γ-transitions to the ground state and to the first excited state of ¹⁸O were found. The energy dependence of their cross sections can be described by the direct capture process and its interference with the two 1⁻ resonances at E_α = 1.79 and 2.33 MeV.

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¹: Permanent address: University of Toronto, Toronto, Canada.

²: Present address: EGG-Astrophysics Research Corp., Long Beach, CA, USA.

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