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3D solution of Hartree-Fock-Bogoliubov equations for drip-line nuclei

par Terasaki, Jun;Heenen, Paul-Henri ;Flocard, Hubert;Bonche, Paul
Référence Nuclear physics. A, 600, 3, page (371-386)
Publication Publié, 1996-04

Article révisé par les pairs

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Résumé :

We investigate the possibility of describing triaxial quadrupole deformations for nuclei close to the two-neutron drip line by the Hartree-Fock-Bogoliubov method taking into account resonances in the continuum. We use a Skyrme interaction to describe the Hartree-Fock hamiltonian and a density-dependent zero-range interaction to evaluate the pairing field. The mean-field equations are solved in a three-dimensional cubic mesh. We study the stability of the two-neutron separation energies and of the description of the nuclear surface as a function of the number of active mean-field orbitals and of the size of the mesh. The even Ni isotopes are used as a test case and the accuracy as a function of quadrupole deformation is studied by performing constrained calculations. A first application to the study of the two-neutron separation energies in Ni isotopes up to the drip line is presented.