Nuclear structure near the neutron dripline: lattice HFB calculations with high-energy continuum coupling

Abstract

We have developed a new Hartree-Fock-Bogoliubov (HFB) code which has been specifically designed to study ground state properties of nuclei near the neutron and proton drip lines. The unique feature of our code is that it takes into account the strong coupling to high-energy continuum states, up to an equivalent single-particle energy of 60 MeV. We solve the HFB equations for deformed, axially symmetric even-even nuclei in coordinate space on a 2-D lattice with Basis-Spline methods. For the p-h channel, the Skyrme (SLy4) effective N-N interaction is utilized, and for the p-p and h-h channel we use a delta interaction. We present results for binding energies, deformations, normal densities and pairing densities, Fermi levels, and pairing gaps. In particular, we will discuss neutron-rich isotopes of oxygen (O-22) and tin (Sn-150).