Nuclear and Astronomical Constraints on the Site for R-Process Nucleosynthesis

Details Nuclear and Astronomical Constraints on the Site for R-Process Nucleosynthesis Nuclear and Astronomical Constraints on the Site for R-Process Nucleosynthesis

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aipc..238..827m&link_type=abstract

Capture gamma-ray spectroscopy. AIP Conference Proceedings, Volume 238, pp. 827-839 (1991).

Astronomy and Astrophysics

Astronomy

Elementary Particle Processes, Radiative Capture

Scientific paper

New measurements and theoretical studies of nuclear properties, together with new astronomical data on the growth of heavy-element abundances during the early history of the Galaxy, now provide a clearer picture of where in nature the elements heavier than iron are produced by rapid (r-process) neutron capture reactions. The nuclear data suggest that the r-process involves a high-temperature and high-neutron-density beta-flow equilibrium environment.The astronomical data, when compared with simple galactic chemical evolution models, suggests that the r-process is associated with Type II supernovae and that the neutron source must be manufactured by the star independent of the initial heavy-element abundance. Low-mass type II supernovae are proposed as the most important contributors to the r-process.

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