EPJ

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EPJ A - Hadrons and Nuclei
Hadrons and Nuclei


Eur. Phys. J. A 13, 377-382 (2002)

Enhanced electron screening in $\mth{d(d, p)t}$ for deuterated Ta*

F. Raiola1, P. Migliardi1, G. Gyürky2, M. Aliotta1, A. Formicola1, R. Bonetti3, C. Broggini4, L. Campajola5, P. Corvisiero6, H. Costantini6, J. Cruz7, A. D'Onofrio8, Z. Fülöp2, G. Gervino9, L. Gialanella5, A. Guglielmetti3, G. Imbriani5, C. Gustavino10, A.P. Jesus7, M. Junker10, R.W. Kavanagh11, P.G.P. Moroni6, A. Ordine5, J.V. Pinto7, P. Prati6, V. Roca5, J.P. Ribeiro7, D. Rogalla1, C. Rolfs1, M. Romano5, F. Schümann1, D. Schürmann1, E. Somorjai2, F. Strieder1, F. Terrasi8, H.P. Trautvetter1 and S. Zavatarelli6

1  Institut für Physik mit Ionenstrahlen, Ruhr-Universität Bochum, Bochum, Germany
2  Atomki, Debrecen, Hungary
3  Dipartimento di Fisica, Università di Milano and INFN, Milano, Italy
4  INFN, Padova, Italy
5  Dipartimento di Scienze Fisiche, Università Federico II and INFN, Napoli, Italy
6  Dipartimento di Fisica, Università di Genova and INFN, Genova, Italy
7  Centro de Fìsica Nuclear, Universidade de Lisboa, Lisboa, Portugal
8  Dipartimento di Scienze Ambientali, Seconda Università di Napoli, Caserta and Napoli, Italy
9  Dipartimento di Fisica Sperimentale, Università di Torino and INFN, Torino, Italy
10  Laboratori Nazionali del Gran Sasso dell'INFN, Assergi, Italy
11  California Institute of Technology, Pasadena, CA, USA

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(Received: 21 December 2001 Communicated by D. Schwalm)

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: for the electron screening potential energy. The high $U_{\rm e}$ 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 - $\chem{^2H}$-induced reaction.
95.30.-k - Fundamental aspects of astrophysics.

© Società Italiana di Fisica, Springer-Verlag 2002

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