Eur. Phys. J. A 13, 377-382 (2002)
Enhanced electron screening in
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
rolfs@ep3.ruhr-uni-bochum.de
(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
value arises from the environment of the deuterons in the Ta
matrix, but a quantitative explanation is missing.
25.10.+s - Nuclear reactions involving few-nucleon systems.
25.45.-z -

95.30.-k - Fundamental aspects of astrophysics.
© Società Italiana di Fisica, Springer-Verlag 2002