Source of the Rare-Earth Element Peak in r-Process Nucleosynthesis

Details Source of the Rare-Earth Element Peak in r-Process Nucleosynthesis Source of the Rare-Earth Element Peak in r-Process Nucleosynthesis

Sep 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997phrvl..79.1809s&link_type=abstract

Physical Review Letters, Volume 79, Issue 10, September 8, 1997, pp.1809-1812

Physics

30

Scientific paper

We use network calculations of r-process nucleosynthesis to pin down the origin of the peak in the solar r-process abundance distribution near nuclear mass number A~160. The peak is due to a subtle interplay of nuclear deformation and β decay, and forms not in the steady phase of the r process, but only just prior to freeze-out, as the free neutrons rapidly disappear. Its existence should therefore help constrain the conditions under which the r process freezes out.

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