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APS » Journals » Phys. Rev. C » Volume 69 » Issue 4
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Phys. Rev. C 69, 044613 (2004) [9 pages]

Reactions induced by the halo nucleus 6He at energies around the Coulomb barrier

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A. Di Pietro1,*, P. Figuera2, F. Amorini2,3, C. Angulo4, G. Cardella2, S. Cherubini5,†, T. Davinson1, D. Leanza2,3, J. Lu2, H. Mahmud1, M. Milin6, A. Musumarra2,3, A. Ninane5, M. Papa2, M. G. Pellegriti2,3, R. Raabe7, F. Rizzo2,3, C. Ruiz1,‡, A. C. Shotter1,§, N. Soić6, S. Tudisco2,3, and L. Weissman7,**
1School of Physics, University of Edinburgh EH9 3JZ Edinburgh, United Kingdom
2INFN Laboratori Nazionali del Sud and Sezione di Catania, I95123 Catania, Italy
3Universita’ di Catania, I95125 Catania, Italy
4Centre de Recherches du Cyclotron, Chemin du Cyclotron 2, B1348 Louvain-la-Neuve, Belgium
5Institut de Physique Nucléaire and Centre de Recherches du Cyclotron, University of Louvain B1348 Louvain-la-Neuve, Belgium
6Ruđer Bošković Institute, 10002 Zagreb, Croatia
7Instituut voor Kern-en Stralingsfysica, University of Leuven, B3001 Leuven, Belgium

Received 2 December 2003; published 26 April 2004

The reaction 6He+64Zn was studied in order to investigate the effects of the projectile neutron-halo structure on the reaction mechanism at energies around the Coulomb barrier. Elastic scattering angular distributions, transfer∕breakup angular distributions, and fusion excitation functions have been measured. Due to the low-recoil energy of the evaporation residues and the low intensity of the 6He beam, the fusion cross section was measured by detecting off-line the atomic x-ray emission which follows the electron capture decay of the evaporation residues. For comparison the reaction 4He+64Zn was studied using the same technique. The data for the reaction 6He+64Zn show that the transfer and breakup mechanisms account for almost 80% of the total reaction cross section, moreover we do not observe an enhancement of the fusion cross section when compared with the 4He+64Zn reaction.

© 2004 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.69.044613
DOI:
10.1103/PhysRevC.69.044613
PACS:
25.60.Bx, 25.55.Ci, 25.60.Dz, 25.60.Pj

*Present address: INFN-Laboratori Nazionali del Sud, Catania, Italy.

†Present address: Ruhr University, Bochum, Germany.

‡Present address: TRIUMF, Vancouver, British Columbia, Canada.

§Present address: TRIUMF, Vancouver, British Columbia, Canada.

**Present address: NSCL, Michigan State University, East Lansing, Michigan.

 
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