Carbon isotopes near drip lines in the relativistic mean-field theory

Abstract

We have investigated the ground-state properties of carbon isotopes in the framework of the relativistic mean-field (RMF) theory. RMF calculations have been performed with the nonlinear scalar self-coupling of the $\ensuremath{\sigma}$ meson using an axially symmetric deformed configuration. We have also introduced the vector self-coupling of the $\ensuremath{\omega}$ meson for the deformed mean-field calculations. The results show that the RMF predictions on radii and deformations are in good agreement with the available experimental data. It is shown that several carbon isotopes possess a highly deformed shape akin to a superdeformation. The single-particle structure of nuclei away from the stability line has been discussed with a view to understand the properties near the neutron drip line. Predictions of properties of carbon isotopes away from the stability line are made.