A study of shape transition and bubbleness in Ne isotopes

Abstract

We have studied shape transition and development of quadrupole deformation in even-even ^18-36Ne isotopes by employing covariant density functional theory (CDFT) with density-dependent meson exchange (DD-ME2) and density-dependent point coupling (DD-PC1) parameter sets. A sudden shape transition is observed in the Ne isotopic chain and can be related to the evolution of shell structure of single-particle orbitals. The correlations between shape transition and discontinuity in the other physical observables are also examined. Our results for ground-state properties are in good agreement with the available experimental data and the result of various theoretical models. The present calculations infer the neutron drip line at ³⁴Ne. In addition to shape transition, the bubble structure is also studied for magic nuclei in this chain.