The s-process efficiency in massive stars

Details The s-process efficiency in massive stars The s-process efficiency in massive stars

Feb 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aipc..425..605r&link_type=abstract

Tours symposium on nuclear physics III. AIP Conference Proceedings, Volume 425, pp. 605-615 (1998).

Physics

Nuclear Physics

2

Stellar Structure, Interiors, Evolution, Nucleosynthesis, Ages, Composition

Scientific paper

The s-process is studied in the He burning core of a Mα=8Msolar He star using temperature and density profiles obtained in standard stellar evolution models and an updated nuclear network. We discuss in detail the s-process efficiency for metallicities z/zsolar ranging between 1 and 10-3 in the light of recent nuclear data. We show that 16O acts as a powerful neutron poison at low z although its effect on the s-process yields is still subject to large uncertainties due to our imperfect knowledge of some nuclear reaction rates.

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