Relativistic mean-field description of Sn isotopes

Recently proposed BCS approach with a discretized continuum (by enclosing the nucleus in a spherical box) for the calculation of pairing energy for the drip-line nuclei within the framework of relativistic mean-field (RMF) theory is applied to the description of the ground state properties of Sn isotopes. The TMA parameter set is used for the effective mean-field Lagrangian with the nonlinear terms for the sigma and omega mesons. The results for the two neutron separation energies, and proton and neutron rms radii are shown to be in excellent agreement with the available experimental data and with the recent calculations using the relativistic Hartree-Bogoliubov (RHB) theory. Also, the calculated neutron single particle pairing gaps are found to be in agreement with the RHB and other mean-field calculations.