S-factor of 14N(p,gamma)15O at astrophysical energies

Abstract

The astrophysical S-factor of 14N(p,gamma)15O has been measured for effective center-of-mass energies between E_eff = 119 and 367 keV at the LUNA facility using TiN solid targets and Ge detectors. The data are in good agreement with previous and recent work at overlapping energies. R-matrix analysis reveals that due to the complex level structure of 15O the extrapolated S(0) value is model dependent and calls for additional experimental efforts to reduce the present uncertainty in S(0) to a level of a few percent as required by astrophysical calculations.

Eur. Phys. J. A, accepted. 17 pages, 15 figures

References in corpus (5)

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• Direct measurement of the 14N(p,g)15O S-factor
• Feasibility of low energy radiative capture experiments at the LUNA underground accelerator facility
• The ${}^{14}N(p,\gamma {)}^{15}O$ reaction, solar neutrinos and the age of the globular clusters

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