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Interplay between valence and core excitation mechanisms in the breakup of halo nuclei

Opened Access Interplay between valence and core excitation mechanisms in the breakup of halo nuclei

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Autor: Moro Muñoz, Antonio Matías
Lay Valera, José Antonio
Departamento: Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Fecha: 2012-12-05
Publicado en: Physical Review Letters, 109 (23), 232502-1-232502-5.
Tipo de documento: Artículo
Resumen: The phenomenon of core excitation in the breakup of a two-body halo nucleus is investigated. We show that this effect plays a significant role in the reaction dynamics and, furthermore, its interference with the valence excitation mechanism has sizable and measurable effects on the breakup angular distributions. These effects have been studied in the resonant breakup of 11Be on a carbon target, populating the resonances at 1.78 MeV (5/2+) and 3.41 MeV (3/2+). The calculations have been performed using a recent extension of the distorted-wave Born approximation method, which takes into account the effect of core excitation in both the structure of the halo nucleus and in the reaction mechanism. The calculated angular distributions have been compared with the available data [Fukuda et al., Phys. Rev. C 70, 054606 (2004).]. Although each of these resonances is dominated by one of the two considered mechanisms, the angular patterns of these resonances depend in a very delicate way on the ...
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Cita: Moro Muñoz, A.M. y Lay, J.A. (2012). Interplay between valence and core excitation mechanisms in the breakup of halo nuclei. Physical Review Letters, 109 (23), 232502-1-232502-5.
Tamaño: 194.5Kb
Formato: PDF

URI: http://hdl.handle.net/11441/62531

DOI: 10.1103/PhysRevLett.109.232502

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