Ratio of S factors for (p,γ) reactions on 12C and 13C at astrophysically relevant energies

Details Ratio of S factors for (p,γ) reactions on 12C and 13C at astrophysically relevant energies Ratio of S factors for (p,γ) reactions on 12C and 13C at astrophysically relevant energies

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001phrvc..64f5804n&link_type=abstract

Physical Review C (Nuclear Physics), Volume 64, Issue 6, December 2001, p.065804

Physics

Nuclear Physics

2

Hydrostatic Stellar Nucleosynthesis, Radiative Capture

Scientific paper

We present measurements of the 12C(p,γ0)13N/13C(p,γ0)14N S factor ratio at Ep=160 keV. The overall result of 0.33+/-0.03 is in good agreement with the value of this ratio obtained from previous experimental values of the S factors for the 12C(p,γ0)13N and the 13C(p,γ0)14N reactions. A value for the total S factor ratio of S[12C(p,γtotal)]/S[13C(p,γtotal)]=0.24+/-0.03 is computed by correcting the 13C(p,γ0) S factor for transitions to the other intermediate states. The direct + resonance model calculation of this ratio and the impact on the CNO cycle are also explored.

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