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Core excitations in 8He and 7He

par Adachour, A.;Descouvemont, Pierre
Référence Physics Letters B, 639, 5, page (447-450)
Publication Publié, 2006

Article révisé par les pairs

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Résumé :

The 8He and 7He nuclei are investigated in a microscopic cluster model involving 6He + n + n and 6He + n configurations, respectively. The wave functions are defined in the Generator Coordinate Method, with excitations of the 6He core nucleus. In the 8He ground state, we find that the 6He (2+) + n + n configuration plays a major role, in agreement with recent data. A similar conclusion holds for 7He, unbound against neutron emission. © 2006 Elsevier B.V. All rights reserved.