EPJ

2022 Impact factor 2.7
EPJ A - Hadrons and Nuclei
Hadrons and Nuclei
Eur. Phys. J. A 7, 303-305

Short note

Absolute cross section of p(7Be,$\gamma$)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 $\sigma$(E) of the radiative capture reaction p(7Be,$\gamma$)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 $\Delta$E-E detector telescope. The 8B yield was observed concurrently with the 7Be+p elastic scattering yield, relating $\sigma$(E) to the Rutherford scattering cross section. The resulting value, $\sigma(E) = 0.41 \pm 0.11$ $\mu$b, leads to an S(E) factor at zero energy of $S(0) = 16 \pm 4$ 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

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