학술논문
Measurement of the 10 keV resonance in the 10 B(p,α0 )7 Be reaction via the Trojan Horse method.
Document Type
Article
Author
Spitaleri, C.; Lamia, L.; Puglia, S. M. R.; Romano, S.; La Cognata, M.; Crucillà, V.; Pizzone, R. G.; Rapisarda, G. G.; Sergi, M. L.; Gimenez Del Santo, M.; Carlin, N.; Munhoz, M. G.; Souza, F. A.; Szanto de Toledo, A.; Tumino, A.; Irgaziev, B.; Mukhamedzhanov, A.; Tabacaru, G.; Burjan, V.; Kroha, V.
Source
Subject
*EXTRAPOLATION
*RESONANCE
*OSCILLATIONS
*ELECTRON research
*APPROXIMATION theory
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Language
ISSN
0556-2813
Abstract
The 10B(p,α0)7Be bare nucleus astrophysical S(E) factor has been measured for the first time at energies from about 100 keV down to about 5 keV by means of the Trojan Horse method (THM). In this energy region, the S(E) factor is strongly dominated by the 8.699 MeV 11C level (Jπ = 5/2+), producing an s-wave resonance centered at about 10 keV in the entrance channel. Up to now, only the high-energy tail of this resonance has been measured, while the low-energy trend is extrapolated from the available direct data. The THM has been apphed to the quasifree ²H(10B,α0 7Be)n reaction induced at a boron-beam energy of 24.5 MeV. An accurate analysis leads to the determination of the 10B(p,α0)7Be S(E) factor and of the corresponding electron screening potential Ue, thus giving for the first time an independent evaluation of it. [ABSTRACT FROM AUTHOR]