Meteoritic anomalies, rapid neutron capture, and gamma-rays

Details Meteoritic anomalies, rapid neutron capture, and gamma-rays Meteoritic anomalies, rapid neutron capture, and gamma-rays

Jul 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002newar..46..513o&link_type=abstract

New Astronomy Reviews, Volume 46, Issue 8-10, p. 513-518.

Astronomy and Astrophysics

Astronomy

6

Scientific paper

Unlike for the s-process, so far no isotope abundance anomalies of the type expected from standard r-process nucleosynthesis have been detected in meteoritic presolar grains. The possibility is explored whether observed patterns can be related to some of the recently inferred complexity of r-process abundances. Relative strengths of gamma-ray lines observed in a future supernova, such as the strength of the line expected from the decay of 194Os relative to those from 137Cs or 125Sb, may be used as indicators for which type of rapid neutron capture is occurring. Also useful, if observations will be possible within a few months after the explosion, will be the search for gamma rays from nuclei previously not considered because of their relative short half-lives, such as 141Ce and 203Hg.

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