Artículo
DHalo nuclei follow rutherford elastic scattering at energies below the barrier? the case of 11Li
Autor/es | Fernández García, Juan Pablo
Rodríguez Gallardo, Manuela González Álvarez, Marcos Aurelio Moro Muñoz, Antonio Matías Lay Valera, José Antonio Cubero, M. Acosta, Luis Alcorta, Martín |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Fecha de publicación | 2012-12-26 |
Fecha de depósito | 2017-07-13 |
Publicado en |
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Resumen | The first measurement of the elastic scattering of the halo nucleus 11Li and its core 9Li on 208Pb at energies near the Coulomb barrier is presented. The 11Li+208Pb elastic scattering shows a strong reduction with respect ... The first measurement of the elastic scattering of the halo nucleus 11Li and its core 9Li on 208Pb at energies near the Coulomb barrier is presented. The 11Li+208Pb 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 11Li+208Pb is the consequence of the halo structure of 11Li, as it is not observed in the elastic scattering of its core 9Li at the same energies. Four-body continuum-discretized coupled-channels calculations, based on a three-body model of the 11Li 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 11Li. These calculations suggest the presence of a low-lying dipole resonance in 11Li close to the breakup threshold. |
Agencias financiadoras | Ministerio de Educación y Ciencia (MEC). España |
Identificador del proyecto | FPA2009-07387
FPA2009- 07653 FPA2009-08848 FPA2010-22131- C02-01 CSD2007-000 EP/ D060575/1 |
Cita | Fernández García, J.P., Rodríguez Gallardo, M., Álvarez González, M.A., Moro Muñoz, A.M., Lay, J.A., Cubero, M.,...,Alcorta, M. (2012). DHalo nuclei follow rutherford elastic scattering at energies below the barrier? the case of 11Li. Physical Review Letters, 109 (26), 262701-1-262701-5. |
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