The reaction C-12(alpha,gamma)O-16 Plays a key role in determining the C/O ratio in the stellar core at the end of helium burning, which in turn influences the further evolution and nucleosynthesis. The determination of the cross section at the relevant astrophysical energy E-cm = 0.3 MeV, which is of the order of 10(-17) b, requires extrapolation of the S factor determined from data collected with high precision and accuracy at higher energy. A new experimental approach has been undertaken in order to study this reaction for the first time by the direct detection of the O-16 nuclides using the recoil mass separator ERNA.
Measurement of the cross section of 12C(α, γ)16O using the recoil mass separator ERNA / D., Schürmann; DI LEVA, Antonino; N., De Cesare; L., Gialanella; Imbriani, Gianluca; C., Lubritto; A., Ordine; Roca, Vincenzo; H., Röcken; C., Rolfs; D., Rogalla; Romano, Mario; F., Schümann; F., Strieder; F., Terrasi; H. P., Trautvetter. - In: NUCLEAR PHYSICS. A. - ISSN 0375-9474. - STAMPA. - 758:(2005), pp. 367-370. [10.1016/j.nuclphysa.2005.05.067]
Measurement of the cross section of 12C(α, γ)16O using the recoil mass separator ERNA
DI LEVA, ANTONINO;IMBRIANI, GIANLUCA;ROCA, VINCENZO;ROMANO, MARIO;
2005
Abstract
The reaction C-12(alpha,gamma)O-16 Plays a key role in determining the C/O ratio in the stellar core at the end of helium burning, which in turn influences the further evolution and nucleosynthesis. The determination of the cross section at the relevant astrophysical energy E-cm = 0.3 MeV, which is of the order of 10(-17) b, requires extrapolation of the S factor determined from data collected with high precision and accuracy at higher energy. A new experimental approach has been undertaken in order to study this reaction for the first time by the direct detection of the O-16 nuclides using the recoil mass separator ERNA.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
