Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982ap%26ss..82..123c&link_type=abstract
Astrophysics and Space Science, vol. 82, no. 1, Feb. 1982, p. 123-131.
Astronomy and Astrophysics
Astrophysics
71
Abundance, Astrophysics, Heavy Elements, Isotopic Enrichment, Neutrons, Nuclear Capture, Nuclear Fusion, Cosmic Rays, Gamma Ray Astronomy, Nuclear Isobars, Supernova Remnants
Scientific paper
Consideration of the contribution made to the abundances of the heavy element isotopes by the S- and R-processes of nucleosynthesis has led to the determination that the previous assumption concerning the exclusive alignment of isobars to one or the other of these processes is probably in error. If the relatively small odd and even mass number abundance fluctuations characterizing R-process abundances are always the case, as assumed by this study, S-process contributions to the abundances of R-process isobars are substantial, consistent with transient flashing episodes in the S-process neutron production processes. A smooth and monotonically-decreasing curve of the abundance of the S-process yields times the neutron capture cross-section versus mass number is therefore the primary tool for the separation of the abundances due to the two processes.
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