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Electron screening effect in the reactions He(d, p)He and d(He, p)He |
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| Authors: | M Aliotta F Raiola G Gyürky A Formicola R Bonetti C Broggini L Campajola P Corvisiero H Costantini A D'Onofrio Z Fülp G Gervino L Gialanella A Guglielmetti C Gustavino G Imbriani M Junker P G Moroni A Ordine P Prati V Roca D Rogalla C Rolfs M Romano F Schümann E Somorjai O Straniero F Strieder F Terrasi H P Trautvetter S Zavatarelli |
| Institution: | a Institut für Physik mit Ionenstrahlen, Ruhr-Universität Bochum, Bochum, Germany b Atomki, Debrecen, Hungary c Dipartimento di Fisica, Universita di Milano and INFN, Milano, Italy d INFN, Padova, Italy e Dipartimento di Scienze Fisiche, Universita Federico II and INFN, Napoli, Italy f Dipartimento di Fisica, Universita di Genova and INFN, Genova, Italy g Dipartimento di Scienze Ambientali, Seconda Universita di Napoli, Caserta and Napoli, Italy h Dipartimento di Fisica Sperimentale, Universita di Torino and INFN, Torino, Italy i Laboratori Nazionali del Gran Sasso dell'INFN, Assergi, Italy j Osservatorio Astronomico di Capodimonte, Napoli, Italy k Osservatorio Astronomico di Collurania, Teramo, Italy |
| Abstract: | The cross section of the reactions 3He(d, p)4He and d(3He, p)4He has been measured at the center-of-mass energies E=5 to 60 keV and 10 to 40 keV, respectively. The experiments were performed to determine the magnitude of the electron screening effect leading to the respective electron-screening potential energy Ue=219±7 and 109±9 eV, which are both significantly higher than the respective values from atomic physics models, Ue=120 and 65 eV. |
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