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S-factor of 14N(p,γ)15O at astrophysical energies? |
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| Authors: | G Imbriani H Costantini A Formicola A Vomiero C Angulo D Bemmerer R Bonetti C Broggini F Confortola P Corvisiero J Cruz P Descouvemont Z Fülöp G Gervino A Guglielmetti C Gustavino Gy Gyürky A P Jesus M Junker J N Klug A Lemut R Menegazzo P Prati V Roca C Rolfs M Romano C Rossi-Alvarez F Schümann D Schürmann E Somorjai O Straniero F Strieder F Terrasi H P Trautvetter |
| Institution: | 1. Dipartimento di Fisica and INFN, Università di Napoli “Federico II”, Napoli, Italy 2. Dipartimento di Fisica and INFN, Università di Genova, Genova, Italy 3. Laboratori Nazionali del Gran Sasso dell'INFN, Assergi, Italy 4. Dipartimento di Fisica and INFN, Università di Padova, Legnaro, Italy 5. Centre de Recherches du Cyclotron, Université Catholique de Louvain, Louvain-la-Neuve, Belgium 6. INFN, Padova, Italy 7. Dipartimento di Fisica and INFN, Università di Milano, Milano, Italy 8. Centro de F?sica Nuclear da Universidade de Lisboa, Lisboa, Portugal 9. Physique Nucléaire Théorique et Physique Mathématique, Université Libre de Bruxelles, CP 229, Brussels, Belgium 10. Atomki, Debrecen, Hungary 11. Dipartimento di Fisica Sperimentale and INFN, Università di Torino, Torino, Italy 12. Institut für Physik mit Ionenstrahlen, Ruhr-Universit?t Bochum, Bochum, Germany 13. Osservatorio Astronomico Collurania, Teramo, Italy 14. INFN, Napoli, Italy 15. Dipartimento di Scienze Ambientali, Seconda Università di Napoli, Caserta, Italy |
| Abstract: | The astrophysical S(E) factor of 14N(p,γ)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. |
| Keywords: | 25 40 Lw Radiative capture 26 20 +f Hydrostatic stellar nucleosynthesis 26 65 +t Solar neutrinos 29 30 Kv X- and γ -ray spectroscopy |
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