Neutron removal from the deformed halo nucleus Ne-31

摘要

Experimental data on Coulomb breakup and neutron removal indicate that Ne-31 is one of the heaviest halo nuclei discovered so far. The possible ground state of Ne-31 is either 3/2(-) coming from the p-wave halo or 1/2(+) coming from the s-wave halo. In this work, we develop a treatable model to include deformed wave functions and a dynamical knockout formalism that includes the dependence on the nuclear orientation to study the neutron removal from Ne-31 projectiles at energies around E approximate to 200 MeV/nucleon. A detailed account of the effects of deformation on cross sections and longitudinal momentum distributions is made. Our numerical analysis indicates a preference for the Ne-31 ground state with spin-parity 3/2(-).