Prospects for understanding the astrophysical r-process

Details Prospects for understanding the astrophysical r-process Prospects for understanding the astrophysical r-process

Jul 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988stin...8910773m&link_type=abstract

Presented at the Tokyo Symposium on Heavy-ion and Nuclear Astrophysical Problems, Tokyo, Japan, 19 Jul. 1988

Astronomy and Astrophysics

Astrophysics

Astrophysics, Radioactive Decay, Supernovae, Beta Particles, Neutrons, Nuclear Reactions

Scientific paper

This paper discusses several recent advances toward a deeper understanding of the still unknown astrophysical site for rapid (r-process) neutron capture nucleosynthesis. The physical constraints on the r-process from the input nuclear data are highlighted and the particular importance of the recent measurements of beta-decay lifetimes along the r-process path is discussed. Astronomical observations of s- and r-process elemental abundances on metal poor halo stars are also discussed, in the context of models for the galactic chemical evolution of heavy-element abundances, as a constraint on the nature of the r-process. On the basis of these constraints it is suggested that the most likely source for the r-process may be from the ejection of core material from low-mass type II supernovae.

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