F-17(p, gamma)Ne-18 in explosive hydrogen burning

Details F-17(p, gamma)Ne-18 in explosive hydrogen burning F-17(p, gamma)Ne-18 in explosive hydrogen burning

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...326..384w&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 326, March 1, 1988, p. 384-391.

Astronomy and Astrophysics

Astrophysics

32

Fluorine, Hydrogen, Neon, Nuclear Fusion, Oxygen Isotopes, Abundance, Milky Way Galaxy, Oxygen 18, Reaction Kinetics

Scientific paper

The excitation energy of the J exp pi = 3+ level in Ne-18 above the proton threshold has been calculated from both the Thomas-Ehrman shift between bound and unbound single particle states and from the shell model structure of the proposed level. The influence of this state on the thermonuclear reaction rate of F-17(p, gamma)Ne-18 has been investigated, and the consequences for the nucleosynthesis of O-17 and O-18 in different explosive stellar environments are explored. The results suggest that in novae experiencing peak temperatures in excess of 2 x 10 to the 8th K, the F-17(p, gamma)Ne-18 rate dominates over the beta(+)-decay, yielding an enhanced O-18 abundance.

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