The production of neutron-rich isotopes during He burning in massive stars

Details The production of neutron-rich isotopes during He burning in massive stars The production of neutron-rich isotopes during He burning in massive stars

Oct 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...151..205b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 151, no. 2, Oct. 1985, p. 205-214.

Statistics

Computation

42

Helium, Magnesium Isotopes, Neon Isotopes, Neutron Emission, Nuclear Fusion, Supermassive Stars, Abundance, Computational Astrophysics, Stellar Atmospheres, Stellar Mass

Scientific paper

Recently proposed changes in thermonuclear reaction rates are taken into account in the present computations of n-capture nucleosynthesis in massive stars that is induced by the occurrence of the Ne-22(alpha, n) Mg-25 reaction during He burning. Adopting Arnett's (1972) evolutionary models for He-core masses in the 4-32 M(alpha) range, neutron captures are followed through a 246-element network, including the major branching points of the s-chain. The suggested increase in the rate of some alpha-capture reactions is found to have a moderate effect on neutron captures, due to damping by light neutron poisons.

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