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Scattering of the Halo Nucleus 11Be on 197Au at Energies around the Coulomb Barrier

 

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Opened Access Scattering of the Halo Nucleus 11Be on 197Au at Energies around the Coulomb Barrier
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Author: Pesudo, V.
Borge, M. J. G.
Moro Muñoz, Antonio Matías
Lay Valera, José Antonio
Nácher, E.
Gómez Camacho, Joaquín José
Tengblad, Olof
Acosta, L.
Alcorta, M.
González Álvarez, Marcos Aurelio
Fernández García, Juan Pablo
Wang, Z. M.
Department: Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Date: 2017
Published in: Physical Review Letters, 118 (15), 152502.
Document type: Article
Abstract: Angular distributions of the elastic, inelastic, and breakup cross sections of the halo nucleus 11Be on197 Au were measured at energies below (Elab =31.9 MeV) and around (39.6 MeV) the Coulomb barrier. These three channels were unambiguously separated for the first time for reactions of 11Be on a high-Z target at low energies. The experiment was performed at TRIUMF (Vancouver, Canada). The differential cross sections were compared with three different calculations: semiclassical, inert-core continuum-coupled-channels and continuum-coupled-channels ones with including core deformation. These results show conclusively that the elastic and inelastic differential cross sections can only be accounted for if core-excited admixtures are taken into account. The cross sections for these channels strongly depend on the β (E1) distribution in 11Be, and the reaction mechanism is sensitive to the entanglement of core and halo degrees of freedom in 11Be.
Cite: Pesudo, V., Borge, M.J.G., Moro Muñoz, A.M., Lay, J.A., Nácher, E., Gómez Camacho, J.J.,...,González Álvarez, M.A. (2017). Scattering of the Halo Nucleus 11Be on 197Au at Energies around the Coulomb Barrier. Physical Review Letters, 118 (15), 152502.
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URI: http://hdl.handle.net/11441/67885

DOI: 10.1103/PhysRevLett.118.152502

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