Abstract
To investigate the behavior of the neutron gap far from stability with a neutron-sensitive probe, proton elastic and inelastic scattering angular distributions for the neutron-rich nucleus were measured using the MUr à STrip detector array at the Grand Accélérateur National d’Ions Lourds facility. A deformation parameter is obtained for the state, much lower than in , showing a weak neutron contribution to this state. A microscopic analysis was performed using matter and transition densities generated by continuum Skyrme-Hartree-Fock-Bogoliubov and quasiparticle random phase approximation calculations, respectively. The ratio of neutron to proton contributions to the state is found close to the ratio, demonstrating a strong shell closure in the vicinity of the neutron drip line.
- Received 28 April 2005
DOI:https://doi.org/10.1103/PhysRevLett.96.012501
©2006 American Physical Society