Astrophysical S(E) factor of the N15(p,α)C12 reaction at sub-Coulomb energies via the Trojan horse method

Details Astrophysical S(E) factor of the N15(p,α)C12 reaction at sub-Coulomb energies via the Trojan horse method Astrophysical S(E) factor of the N15(p,α)C12 reaction at sub-Coulomb energies via the Trojan horse method

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007phrvc..76f5804l&link_type=abstract

Physical Review C, vol. 76, Issue 6, id. 065804

Astronomy and Astrophysics

Astrophysics

27

Nuclear Reaction Models And Methods, Hydrostatic Stellar Nucleosynthesis, Transfer Reactions, 6<=A<=19

Scientific paper

The low-energy bare-nucleus cross section for N15(p,α)C12 is extracted by means of the Trojan horse method applied to the H2(N15,αC12)n reaction at Ebeam=60 MeV. For the first time we applied the modified half-off-energy-shell resonant R-matrix method that takes into account off-energy-shell effects and initial- and final-state interactions. In particular it has been shown that inclusion of Coulomb N15-d scattering and off-shell effects do not affect the determination of the astrophysical factor. Also the simple plane-wave approximation used in previous analyses is justified. The results extracted via the Trojan horse method are compared to direct data in the same energy region and show very good agreement in the energy interval 70 312 keV. These results confirm the extrapolations of the S factor reported in literature.

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