Short note
Absolute cross section of p(7Be,
)8B using a novel
approach
L. Gialanella1,2 - F. Strieder2 - L. Campajola1 - A. D'Onofrio3 - U. Greife2 - G. Gyurky4 - G. Imbriani1 - G. Oliviero1 - A. Ordine1 - V. Roca1 - C. Rolfs2 - M. Romano1 - D. Rogalla2 - C. Sabbarese3 - E. Somorjai4 - F. Terrasi3 - H.P. Trautvetter2
1 Dipartimento di Scienze Fisiche, Università Federico II, Napoli and INFN, Napoli, Italy
2 Institut für Physik mit Ionenstrahlen, Ruhr-Universität Bochum, Bochum, Germany
3 Dipartimento di Scienze Ambientali, Seconda Università di Napoli, Caserta and INFN, Napoli, Italy
4 Institute of Nuclear Research (ATOMKI), Debrecen, Hungary
Received: 8 February 2000 Communicated by B. Povh
Abstract
The absolute cross section (E) of the radiative capture reaction
p(7Be,
)8B at the center-of-mass energy E = 992 keV has been measured using a radioactive
7Be ion beam and a windowless gas target system filled with H2 gas. The 8B residual nuclides
were detected with a recoil separator consisting of momentum and velocity filters and a
E-E
detector telescope. The 8B yield was observed concurrently with the 7Be+p elastic scattering
yield, relating
(E) to the Rutherford scattering cross section. The resulting value,
b, leads to an S(E) factor at zero energy of
eV b, in fair
agreement with recommended values.
PACS
26.65.+t Solar neutrinos -
25.60.Dz Interactions and reactions cross sections
Copyright Società Italiana di Fisica, Springer-Verlag 2000