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 14N(p,γ)15O at astrophysical energies⋆ / Imbriani, Gianluca; 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; Gyürky, G. y.; A. P., Jesus; M., Junker; J. N., Klug; A., Lemut; R., Menegazzo; P., Prati; Roca, Vincenzo; C., Rolfs; Romano, Mario; C., Rossi Alvarez; F., Schümann; D., Schürmann; E., Somorjai; O., Straniero; F., Strieder; F., Terrasi; H. P., Trautvetter. - In: THE EUROPEAN PHYSICAL JOURNAL. A, HADRONS AND NUCLEI. - ISSN 1434-6001. - STAMPA. - 25:(2005), pp. 455-466. [10.1140/epja/i2005-10138-7]
S-factor of 14N(p,γ)15O at astrophysical energies⋆
IMBRIANI, GIANLUCA;ROCA, VINCENZO;ROMANO, MARIO;
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
