The astrophysical S(E) factor of N-14(p,gamma)O-15 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 O-15 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.

S-factor of N-14(p, gamma)O-15 at astrophysical energies / 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. Fulop, G. Gervino, A. Guglielmetti, C. Gustavino, G. Gyurky, A. P. Jesus, M. Junker, J. N. Klug, A. Lemut, R. Menegazzo, P. Prati, V. Roca, C. Rolfs, M. Romano, C. Rossi-Alvarez, F. Schumann, D. Schurmann, E. Somorjai, O. Straniero, F. Strieder, F. Terrasi, H. P. Trautvetter. - In: THE EUROPEAN PHYSICAL JOURNAL. A, HADRONS AND NUCLEI. - ISSN 1434-6001. - 25:3(2005), pp. 455-466.

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

R. Bonetti;A. Guglielmetti;
2005

Abstract

The astrophysical S(E) factor of N-14(p,gamma)O-15 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 O-15 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.
GLOBULAR-CLUSTERS; N-14(P,GAMMA)O-15; ACCELERATOR; FACILITY; AGE
Settore FIS/04 - Fisica Nucleare e Subnucleare
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/10008
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