https://doi.org/10.1140/epja/i2013-13141-5
Regular Article - Theoretical Physics
Deformed even-even nuclei in a quark-meson coupling model with tensor coupling
1
Key Laboratory of Modern Acoustics and Department of Physics, Nanjing University, 210093, Nanjing, People’s Republic of China
2
Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 201800, Shanghai, People’s Republic of China
3
Departamento de Ciências Básicas e Ambientais, Universidade de São Paulo, 12602-810, SP, Brasil
4
Center of Theoretical Nuclear Physics, National Laboratory of Heavy-Ion Accelerator, 730000, Lanzhou, People’s Republic of China
5
Joint Center of Nuclear Science and Technology, Nanjing University, 210093, Nanjing, People’s Republic of China
* e-mail: xurenli.phy@gmail.com
Received:
31
August
2013
Revised:
5
October
2013
Accepted:
9
October
2013
Published online:
14
November
2013
In this work, a new quark-meson coupling model is employed to study the ground-state properties of axially deformed even-even nuclei. Two essential ingredients, namely, density dependence of quark mass and tensor coupling, play important roles in our approach. In particular, it is the first time that the deformed quark-meson coupling calculation with tensor coupling is applied to study the properties of finite nuclei. The present work involves a systematical study of nuclei ranging from Z = 50 to Z = 82 . The ground-state binding energies, quadrupole deformations, shape coexistence, two-neutron separation energies and the root-mean-square charge radii are calculated and compared with the experimental data. It is shown that the ground-state properties of the deformed nuclei are reasonably well reproduced by a model based on the sub-hadronic degrees of freedom.
© SIF, Springer-Verlag Berlin Heidelberg, 2013
