Absolute cross section of p(7Be,γ)8B using a novel approach
- G. Oliviero
- Carlo Sabbarese
- E. Somorjai
- L. Campajola
- Lucio Gialanella
- Frank Strieder
- Uwe Greife
- Filippo Terrasi
- A. Ordine
- C. Rolfs
- H. P. Trautvetter
- Mario R. Romano
- Vincenzo Roca
- Antonio D'Onofrio
- Gianluca Imbriani
- Detlef Rogalla
- Gyuri Gyürky
DOIAbstract
The absolute cross section sigma(E) of the radiative capture reaction p(Be-7,gamma)B-8 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 H-2 gas. The B-8 residual nuclides were detected with a recoil separator consisting of momentum and velocity filters and a BE E detector telescope. The B-8 yield was observed concurrently with the Be-7+p elastic scattering yield, relating sigma(E) to the Rutherford scattering cross section. The resulting value, sigma(E) = 0.41+/-0.11 mu b, leads to an S(E) factor at zero energy of S(0) = 16+/-4 eV b, in fair agreement with recommended values
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