Ground state properties of exotic nuclei near Z=40 in the relativistic mean-field theory,

Abstract

Study of the ground-state properties of Kr, Sr and Zr isotopes has been performed in the framework of the relativistic mean field (RMF) theory using the recently proposed relativistic parameter set NL-SH. It is shown that the RMF theory provides an unified and excellent description of the binding energies, isotope shifts and deformation properties of nuclei over a large range of isospin in the Z=40 region. It is observed that the RMF theory with the force NL-SH is able to describe the anomalous kinks in isotope shifts in Kr and Sr nuclei, the problem which has hitherto remained unresolved. This is in contrast with the density-dependent Skyrme Hartree-Fock approach which does not reproduce the behaviour of the isotope shifts about shell closure. On the Zr chain we predict that the isotope shifts exhibit a trend similar to that of the Kr and Sr nuclei. The RMF theory also predicts shape coexistence in heavy Sr isotopes. Several dramatic shape transitions in the isotopic chains are shown to be a general feature of nuclei in this region. A comparison of the properties with the available mass models shows that the results of the RMF theory are generally in accord with the predictions of the finite-range droplet model.

24 pages Latex, 7 figures (available upon request), Nuclear Physics A (in press).

References in corpus (2)

• Anomaly in the charge radii of Pb isotopes
• Shell Effects in Nuclei Near Neutron Drip

Cited by in corpus (31)

• A New Parameterization for the Lagrangian Density of Relativistic Mean Field Theory
• Shape Coexistence and the Effective Nucleon-Nucleon Interaction
• Analysis of Chiral Mean-Field Models for Nuclei
• Equilibrium shapes and high-spin properties of the neutron-rich A~100 nuclei
• Superheavy Nuclei in the Relativistic Mean Field Theory
• Computer program for the relativistic mean field description of the ground state properties of even-even axially deformed nuclei
• Symmetry-Unrestricted Skyrme-Hartree-Fock-Bogoliubov Calculations for Exotic Shapes in N=Z Nuclei from 64Ge to 84Mo
• Shape coexistence in neutron-deficient Kr isotopes: Constraints on the single-particle spectrum of self-consistent mean-field models from collective excitations
• A Dirac-Hartree-Bogoliubov approximation for finite nuclei
• Structural evolution in $A\approx 100$ nuclei within the mapped interacting boson model based on the Gogny energy density functional
• Light Nuclei near Neutron and Proton Drip Lines in the Relativistic Mean-Field Theory
• Rare-Earth Nuclei: Radii, Isotope-Shifts and Deformation Properties in the Relativistic Mean Field Theory
• Nuclear skin emergence in Skyrme deformed Hartree-Fock calculations
• Structure of Krypton isotopes calculated with symmetry conserving configuration mixing methods
• Beta-decay properties of Zr and Mo neutron-rich isotopes
• Observation of mutually enhanced collectivity in self-conjugate ${}_{38}^{76}$Sr${}_{38}$
• Stellar weak decay rates in neutron-deficient medium-mass nuclei
• Relativistic Mean Field Theory in Rotating Frame: Single-particle Properties at Superdeformation
• Shape mixing and beta-decay properties of neutron-deficient Kr and Sr isotopes
• Excitation energy of superdeformed bands in Relativistic Mean Field Theory
• Hartree-Fock-Bogoliubov calculation of ground state properties of even-even and odd Mo and Ru isotopes
• Odd-even staggering and shell effects of charge radii for nuclei with even $Z$ from $36$ to $38$ and from $52$ to $62$
• Neutron rich nuclei in density dependent relativistic Hartree-Fock theory with isovector mesons
• Shape Coexistence and Mixing of Low-Lying $0^{+}$ States in ${}^{96}$Sr
• Bulk properties of light deformed nuclei derived from a medium-modified meson-exchange interaction
• First decay study of the very neutron-rich isotope Br-93
• Carbon Isotopes Near Drip Lines in the Relativistic Mean-Field Theory
• Evolution of nuclear charge radii in copper and indium isotopes
• The strength of nuclear shell effects at N=126 in the r-process region
• Ground-state properties of light kaonic nuclei signaling symmetry energy at high densities
• Impact of microscopic structural transitions on particle stability and lifetimes of hot nuclei