Investigations on ground-state properties of deformed nuclei in relativistic mean field theory with parameter set FSUGold

In this work, we have systemically investigated the ground-state properties of the rare-earth even–even nuclei with the parameter set FSUGold that includes the isoscalar–isovector coupling to soften the symmetry energy. It is the first time that this parameter set is applied to investigate the properties of deformed nuclei. The present study is mainly focused on the nuclei with the known experimental binding energies ranging from Z=58 to Z=70. The calculated binding energies, quadrupole deformations, and charge radii are in good agreement with the available experimental data. It has been shown that the parameter set FSUGold is as successful as the NL3 in reproducing the known ground-state properties of deformed nuclei.