Warm CNO nucleosynthesis as a possible enrichment mechanism for oxygen and fluorine isotopes

Details Warm CNO nucleosynthesis as a possible enrichment mechanism for oxygen and fluorine isotopes Warm CNO nucleosynthesis as a possible enrichment mechanism for oxygen and fluorine isotopes

Dec 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...263..891w&link_type=abstract

Astrophysical Journal, Part 1, vol. 263, Dec. 15, 1982, p. 891-901.

Astronomy and Astrophysics

Astrophysics

43

Cosmochemistry, Fluorine Isotopes, Nuclear Capture, Nuclear Fusion, Oxygen Isotopes, Stellar Envelopes, Astrophysics, Carbon, Nitrogen, Oxygen, Protons, Reaction Kinetics

Scientific paper

New rates for proton capture reactions on the radioactive nuclei F-17 and F-18 were calculated and compared with previous ones. The reactions studied include the O-18(p, alpha)N-15, the O-18(p, gamma)F-19, the F-17(p, gamma)Ne-18, the F-18(p, alpha)O-15, and the F-18(p, gamma)Ne-19. The time variation of the abundances of the isotopes were calculated at constant density and temperature. The isotopic abundances as a function of time produced in these reactions were determined. The relevance of the results for CNO burning in convective envelopes of red giant stars or deep-mixing carbon stars, as well as nova events, is discussed.

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