Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...312..327g&link_type=abstract
Astronomy and Astrophysics, v.312, p.327-337
Astronomy and Astrophysics
Astrophysics
41
Nuclear Reactions, Nucleosynthesis, Stars: Supernovae, Solar System: General
Scientific paper
The validity of the waiting point approximation on which canonical r-process calculations are commonly based is studied in detail in the astrophysical conditions of relevance by comparing its abundance predictions with those derived numerically from a full network calculation. Our network computations are also used to analyze the sensitivity of the derived r-process abundances to the astrophysical conditions of temperature, neutron density and timescales. When considering an optimized superposition of a large number of astrophysical events, it is shown that the solar system r-process abundances can be reproduced quite well. The sensitivity of our results to the nuclear physics uncertainties that affect the nuclear mass or level density predictions is also discussed.
Arnould Marcel
Goriely Stephane
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