A difficulty with Ne-22 as the neutron source for the solar system s-process

Details A difficulty with Ne-22 as the neutron source for the solar system s-process A difficulty with Ne-22 as the neutron source for the solar system s-process

Mar 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...236l.165d&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 236, Mar. 15, 1980, p. L165-L168.

Astronomy and Astrophysics

Astrophysics

16

Branching (Physics), Neon Isotopes, Neutron Sources, Nuclear Reactions, Solar System, Stellar Evolution, Abundance, Astrophysics, Krypton 85, Solar Physics

Scientific paper

A consideration of the Ne-22 neutron source as it operates in shell flashes suggests that it cannot produce the bulk of the solar system s-process elements. Shell flashes at low core masses do not liberate enough neutrons per flash to build up solar abundances, while flashes at high core masses liberate the neutrons too rapidly. Classical s-process branches appear to be saturated by neutron capture and many r-process elements are produced. The resulting isotope ratios would be distinctly nonsolar.

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