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Phys. Rev. C 64, 068801 (2001) [2 pages]

Improved information on the 2H(6Li,α)4He reaction extracted via the “Trojan horse” method

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A. Musumarra1,2, R. G. Pizzone1,2, S. Blagus3, M. Bogovac3, P. Figuera1, M. Lattuada1,4, M. Milin3, Ð. Miljanić3, M. G. Pellegriti1,2,5, D. Rendić3, C. Rolfs6, N. Soić3, C. Spitaleri1,2 *, S. Typel7, H. H. Wolter8, and M. Zadro3
1Laboratori Nazionali del Sud-INFN, Catania, Italy
2Dipartimento di Metodologie Fisiche e Chimiche per l’Ingegneria, Università di Catania, Catania, Italy
3Institut Ruer Bošković, Zagreb, Croatia
4Dipartimento di Fisica e Astronomia, Università di Catania, Catania, Italy
5Centro Siciliano di Fisica Nucleare e Struttura della Materia, Catania, Italy
6Institut für Physik mit Ionenstrahlen, Ruhr-Universität, Bochum, Germany
7National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan
8Ludwig-Maximilians Universität, München, Germany

Received 4 July 2001; published 16 November 2001

We have studied the 2H(6Li,α)4He two-body reaction by applying the “Trojan horse” method (THM) to the 6Li(6Li,αα)4He three-body reaction. The astrophysical S(E) factor has been extracted in the energy range between 10–800 keV for the two cases of target and projectile quasifree break-up. We found good agreement between the two data sets leading an improved determination of the S(E) with S(0)=16.9±0.5 MeV b. Furthermore, the electron screening potential energy Ue=320±50 eV has been extracted in a model-independent way by comparing direct and THM data. This value is significantly higher than the value predicted by current theoretical models.


©2001 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevC.64.068801
DOI: 10.1103/PhysRevC.64.068801
PACS: 26.20.+f, 21.10.Pc, 24.50.+g, 25.70.Hi

* Permanent address: Laboratori Nazionali del Sud, INFN, via S. Sofia, 44, I-95123 Catania, Italy.

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