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DHalo nuclei follow rutherford elastic scattering at energies below the barrier? the case of 11Li

Opened Access DHalo nuclei follow rutherford elastic scattering at energies below the barrier? the case of 11Li

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Autor: Fernández García, Juan Pablo
Rodríguez Gallardo, Manuela
González Álvarez, Marcos Aurelio
Moro Muñoz, Antonio Matías
Lay Valera, José Antonio
Cubero, M.
Acosta, L.
Alcorta, M.
Departamento: Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Fecha: 2012-12-26
Publicado en: Physical Review Letters, 109 (26), 262701-1-262701-5.
Tipo de documento: Artículo
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 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.
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.
Tamaño: 671.0Kb
Formato: PDF

URI: http://hdl.handle.net/11441/62501

DOI: 10.1103/PhysRevLett.109.262701

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