Valence pairing, core deformation and the development of two-neutron halos

Abstract

We explore the evolution of the structure of the ground state of a nucleus with two valence nucleons as the system approaches the two particle threshold. We use a three-body model of $core+n+n$ where the core is deformed and allowed to excite. We find that both NN correlations and correlations due to deformation/excitation of the core inhibit the formation of halos. Our results suggest that it is unlikely to find halo nuclei on the dripline of deformed nuclei.

11 pages, 4 figures. accepted in Nucl. Phys. A

References in corpus (3)

• Deformed Base Antisymmetrized Molecular Dynamics and its Application to ^{20}Ne
• FaCE: a tool for Three Body Faddeev calculations with core excitation
• Bare vs effective pairing forces. A microscopic finite-range interaction for HFB calculations in coordinate space

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