First measurement of the d(p,gamma)3He cross section down to the solar Gamow peak
- C.Casella
- H.Costantini
- A.Lemut
- B.Limata
- R.Bonetti
- C.Broggini
- L. Campajola
- P. Corvisiero
- J.Cruz
- A. D`Onofrio
- A. Formicola
- Z.Fülöp
- G.Gervino
- L.Gialanella
- A. Guglielmetti
- C.Gustavino
- G.Gyurky
- G.Imbriani
- A.P.Jesus
- M. Junker
- A. Ordine
- J.V.Pinto
- P. Prati
- J.P.Ribeiro
- V.Roca
- D.Rogalla
- C.Rolfs
- M.Romano
- C.R.Alvarez
- F. Schümann
- E.Somorjai
- O.Straniero
- F. Strieder
- F.Terrasi
- H.P. Trautvetter and S. Zavatarelli
DOIAbstract
Using the 50 kV LUNA accelerator facility at the Gran Sasso underground laboratory we measured, with an accuracy of the order of 10%, the d(p,gamma)He-3 cross section from 22 down to keV c.m. energy, well below the solar Gamow peak. The experimental set-up was based on a large solid angle, segmented BGO detector and a renewed windowless gas target. The astrophysical S(E) factor within the Gamow peak is in fair agreement with the value of one of the existing extrapolations of data at higher energies
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