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Boron depletion: indirect measurement of the 10B(p,α)7Be S(E)-factor

2006; Elsevier BV; Volume: 787; Issue: 1-4 Linguagem: Inglês

10.1016/j.nuclphysa.2006.12.049

1873-1554

L. Lamia, S. Romano, N. Carlin, S. Cherubini, V. Crucillà, M. M. de Moura, M. G. Del Santo, M. G. Munhoz, M. Gulino, R. Liguori Neto, M. La Cognata, F. Mudò, R. G. Pizzone, Chengbo Li, M. L. Sergi, F. A. Souza, C. Spitaleri, A. A. P. Suaide, E. M. Szanto, A. Szanto de Toledo, S. Tudisco, А. Туміно,

Nuclear Physics and Applications

The 10B(p,α)7Be reaction is the main responsible for 10B destruction in stellar interior. In such environments this p-capture process occurs at a Gamow energy of ∼10 keV, and takes places mainly through a resonant state (Ex=8.701 MeV) of the compound 11C nucleus. Thus, a resonance right in the region of the Gamow peak is expected to significantly influence the behaviour of the astrophysical S(E)-factor. The 10B(p,α)7Be reaction has been investigated by means of the Trojan Horse Method (THM) applied to the 2H(10B,α7Be)n three-body process. The experiment was performed at Ebeam=27 MeV at the Instituto de Fisica Nuclear de São Paulo. Preliminary results concerning the extraction of the bare-nucleus S(E)-factor will be presented.