Stopping power, electron screening and the astrophysical S(E) factor of d(3He,p)4He
- L. Gialanella
- R. Bonetti
- L. Campajola
- Frank Strieder
- H. Costantini
- Gianluca Imbriani
- A. Ordine
- C. Rolfs
- Antonio D'Onofrio
- C. Gustavino
- H. P. Trautvetter
- Mario R. Romano
- Paolo Prati
- Vincenzo Roca
- Sandra Zavatarelli
- A. Formicola
- P. Corvisiero
- A. Guglielmetti
- G. Gervino
- Uwe Greife
- P. G. Prada Moroni
- Detlef Rogalla
- M. Junker
- Filippo Terrasi
- A. Fubini
- Oscar Straniero
- F. Schumann
- Carlo Broggini
Publication date
June 2000
DOIAbstract
Abstract The d( 3 He,p) 4 He cross section has been measured at E =4.2 to 13.8 keV using the LUNA underground accelerator facility. The experiment was performed to determine the magnitude of the atomic screening effect and to establish values for the energy loss used in data reduction. The observed stopping power of the 3 He ions in the D 2 target is in good agreement with the standard compilation. Using these stopping power values the data lead to an electron-screening potential energy U e = 132±9 eV, which is significantly higher than the estimated value of 65 eV from an atomic-physics model
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