Superheavy nuclei in relativistic effective Lagrangian model

Abstract

Isotopic and isotonic chains of superheavy nuclei are analyzed to search for spherical double shell closures beyond Z=82 and N=126 within the new effective field theory model of Furnstahl, Serot, and Tang for the relativistic nuclear many-body problem. We take into account several indicators to identify the occurrence of possible shell closures, such as two-nucleon separation energies, two-nucleon shell gaps, average pairing gaps, and the shell correction energy. The effective Lagrangian model predicts N=172 and Z=120 and N=258 and Z=120 as spherical doubly magic superheavy nuclei, whereas N=184 and Z=114 show some magic character depending on the parameter set. The magicity of a particular neutron (proton) number in the analyzed mass region is found to depend on the number of protons (neutrons) present in the nucleus.

26 pages, REVTeX, 10 ps figures; changed content

References in corpus (3)

• Cranked Relativistic Hartree-Bogoliubov Theory: probing the gateway to superheavy nuclei
• Skyrme mean-field study of rotational bands in transfermium isotopes
• Skyrme Hartree-Fock Calculations for the Alpha Decay Q Values of Super-Heavy Nuclei

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