Physics – Nuclear Physics
Scientific paper
Oct 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aps..dnp..a103h&link_type=abstract
American Physical Society, Division of Nuclear Physics Meeting, October 28-31, 1998 Santa Fe, New Mexico, abstract #A1.03
Physics
Nuclear Physics
Scientific paper
About half of the heavy elements are thought to be created in the r-process, or rapid neutron capture process, that occurs under spectacularly explosive conditions associated with events such as core-collapse supernovae and neutron star mergers. There is an interesting analogy between the r-process and another kind of explosive synthesis, the creation of the light elements in the big bang. Just as helium synthesis constrains the baryon-to-photon ratio and the number of light neutrino species, the r-process may yield important constraints on the properties of the tau neutrino. I discuss the recent convergence of work - progress in understanding very-neutron-rich nuclei, Hubble Space Telescope observations of old, metal-poor stars, supernova explosion simulations, and evidence for massive neutrinos - that suggests the r-process is very interesting and perhaps very complicated.
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