Physics – Nuclear Physics
Scientific paper
Oct 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aps..dnp.aa003s&link_type=abstract
American Physical Society, Division of Nuclear Physics Fall Meeting, October 30 - November 1, 2003, Tucson, Arizona, MEETING ID:
Physics
Nuclear Physics
Scientific paper
How where the heavy elements from iron to uranium made? Finding the answer to this question is part of the broader challenge to understand the chemical history of the Universe. A few light elements were created in the first few minutes after the Big Bang, but most of the other elements were created over the subsequent 14 billion years by nuclear reactions in stellar objects. Many of the reactions involve radioactive nuclei and hence, a detailed understanding of the chemical history of the Universe involves the properties of unstable isotopes. Often the most important isotopes, particularly in the case of understanding the synthesis of the heaviest elements, are very neutron or proton rich relative to stability. This talk will provide an overview of the role of unstable nuclei in the cosmos and the scientific frontiers that can be addresses with the knowledge of their properties. The broad theme of the talk will be how we measure and model the chemical evolution of the Universe, but a few selected, specific examples will be given.
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