Enhanced electron screening in d (d, p)t for deuterated Ta* F. Raiola P. Migliardi G. Gyürky M. Aliotta A. Formicola R. Bonetti C. Broggini L. Campajola P. Corvisiero H. Costantini J. Cruz A. D'Onofrio Z. Fülöp G. Gervino L. Gialanella A. Guglielmetti G. Imbriani C. Gustavino A.P. Jesus M. Junker R.W. Kavanagh P.G.P. Moroni A. Ordine J.V. Pinto P. Prati V. Roca J.P. Ribeiro D. Rogalla C. Rolfs M. Romano F. Schümann D. Schürmann E. Somorjai F. Strieder F. Terrasi H.P. Trautvetter S. Zavatarelli
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Abstract: The recent observation of a large electron screening effect in the d(d, p)t reaction using a deuterated Ta target has been confirmed using somewhat different experimental approaches: U e = 309±12 eV for the electron screening potential energy. The high U e value arises from the environment of the deuterons in the Ta matrix, but a quantitative explanation is missing.
PACS. 25.10.+s Nuclear reactions involving few-nucleon systems – 25.45.-z 2H-induced reaction – 95.30.-k Fundamental aspects of astrophysics
Received: 21 December 2001 / Accepted: 29 January 2002
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© Società Italiana di Fisica and Springer-Verlag 2002
Authors and Affiliations F. Raiola P. Migliardi G. Gyürky M. Aliotta A. Formicola R. Bonetti C. Broggini L. Campajola P. Corvisiero H. Costantini J. Cruz A. D'Onofrio Z. Fülöp G. Gervino L. Gialanella A. Guglielmetti G. Imbriani C. Gustavino A.P. Jesus M. Junker R.W. Kavanagh P.G.P. Moroni A. Ordine J.V. Pinto P. Prati V. Roca J.P. Ribeiro D. Rogalla C. Rolfs M. Romano F. Schümann D. Schürmann E. Somorjai F. Strieder F. Terrasi H.P. Trautvetter S. Zavatarelli 1. Institut für Physik mit Ionenstrahlen, Ruhr-Universität Bochum, Bochum, Germany DE 2. Atomki, Debrecen, Hungary HU 3. Dipartimento di Fisica, Università di Milano and INFN, Milano, Italy IT 4. INFN, Padova, Italy IT 5. Dipartimento di Scienze Fisiche, Università Federico II and INFN, Napoli, Italy IT 6. Dipartimento di Fisica, Università di Genova and INFN, Genova, Italy IT 7. Centro de Fısica Nuclear, Universidade de Lisboa, Lisboa, Portugal PT 8. Dipartimento di Scienze Ambientali, Seconda Università di Napoli, Caserta and Napoli, Italy IT 9. Dipartimento di Fisica Sperimentale, Università di Torino and INFN, Torino, Italy IT 10. Laboratori Nazionali del Gran Sasso dell'INFN, Assergi, Italy IT 11. California Institute of Technology, Pasadena, CA, USA US