Properties of deformed even-even nuclei nearZ=20in an improved quark mass density-dependent model

Abstract

An improved quark mass density-dependent model is applied to study the ground-state properties of axially deformed even-even nuclei using the deformed quark-meson coupling calculation. The present study is mainly focused on the nuclei with the available experimental data ranging from Z = 14 to Z = 26. The ground-state binding energies, two-neutron separation energies, two-proton separation energies, quadrupole deformations, and root-mean-square (rms) charge radii are studied. The shell effect of the neutron magic number N = 20 can be demonstrated by our model. It has been shown that the improved quark mass density-dependent model can give a reasonable description of the axially deformed nuclei.

Nuclear structure and decay modes of Ra isotopes within an axially deformed relativistic mean field model

“…Since the RMF automatically considers the spin orbit interaction, it receives much attention due to its spectacular achievements in describing the structure of stable nuclei [81], proton-rich nuclei [82], neutron-rich nuclei [83], superdeformed nuclei [84], and superheavy nuclei [84][85][86][87][88]. In addition to this, RMF theory has developed in many directions in recent years [89][90][91]. In the low energy regime it is now a standard tool to study the nuclear structure.…”