Determination of the Subthreshold State Contribution in 13C(α,n)16O, the Main Neutron-Source Reaction for the s Process

Details Determination of the Subthreshold State Contribution in 13C(α,n)16O, the Main Neutron-Source Reaction for the s Process Determination of the Subthreshold State Contribution in 13C(α,n)16O, the Main Neutron-Source Reaction for the s Process

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003phrvl..90f2501k&link_type=abstract

Physical Review Letters, vol. 90, Issue 6, id. 062501

Physics

15

Transfer Reactions, Transfer Reactions, Hydrostatic Stellar Nucleosynthesis, 6<=A<=19

Scientific paper

The reaction rate of the stellar reaction 13C(α,n)16O, which is currently considered to be the main neutron source for the slow (s) process at low energies, has been rederived using the direct α-transfer reaction 13C(6Li,d)17O leading to the subthreshold state at 6.356MeV in 17O. The contribution of the subthreshold state is found to be much smaller than the currently accepted predictions for the main neutron source of the s process, indicating less of a role of this reaction as the neutron source for the s-process scenario in low-mass stars at the asymptotic giant branch.

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