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Title

Do halo nuclei follow Rutherford elastic scattering at energies below the barrier? The case of 11Li

AuthorsCubero, M. ; Fernández García, J. P.; Alcorta, Martín ; Álvarez, M. A. G. ; García Borge, María José ; Gómez-Camacho, Joaquín ; Madurga, Miguel ; Mukha, I. ; Tengblad, Olof
Issue Date2012
PublisherAmerican Physical Society
CitationPhysical Review Letters 109(26): 262701 (2012)
AbstractThe first measurement of the elastic scattering of the halo nucleus Li11 and its core Li9 on Pb208 at energies near the Coulomb barrier is presented. The Li11+Pb208 elastic scattering shows a strong reduction with respect to the Rutherford cross section, even at energies well below the barrier and down to very small scattering angles. This drastic change of the elastic differential cross section observed in Li11+Pb208 is the consequence of the halo structure of Li11, as it is not observed in the elastic scattering of its core Li9 at the same energies. Four-body continuum-discretized coupled-channels calculations, based on a three-body model of the Li11 projectile, are found to explain the measured angular distributions and confirm that the observed reduction is mainly due to the strong Coulomb coupling to the dipole states in the low-lying continuum of Li11. These calculations suggest the presence of a low-lying dipole resonance in Li11 close to the breakup threshold. © 2012 American Physical Society.
Description5 páginas, 3 figuras.-- et al.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevLett.109.262701
URIhttp://hdl.handle.net/10261/67047
DOI10.1103/PhysRevLett.109.262701
Identifiersdoi: 10.1103/PhysRevLett.109.262701
issn: 0031-9007
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(CNA) Artículos
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