THE R-PROCESS: Observations, models and unresolved issues

Details THE R-PROCESS: Observations, models and unresolved issues THE R-PROCESS: Observations, models and unresolved issues

Oct 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..dnp3wb001c&link_type=abstract

American Physical Society, 2002 Fall Meeting of the Division of Nuclear , abstract #3WB.001

Astronomy and Astrophysics

Astrophysics

Scientific paper

An overview of the the rapid neutron capture process (i.e., the r-process) will be presented. Abundances of these neutron-capture nuclei and elements in solar system material will first be compared with elemental and isotopic abundance patterns in certain galactic halo stars. These comparisons can then be used to identify the types of conditions and to constrain various models for the formation of the r-process nuclei. The models and comparisons will also be discussed in the context of the remaining problems and open questions in the r-process. These include the general lack of nuclear data for the most neutron-rich nuclei and the critical nature of the nuclear mass formulae; differences in the production of the heavier (above barium) and lighter neutron-capture elements; and the uncertainties in identifying the actual astrophysical site for the r-process and the evidence for, and the possible existence of, more than one such site.

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