Study of shape coexistence in the 180-190Hg isotopes by SO(6) representation of eigenstates

被引：2
|
作者：
Sabri, H. [1 ]
Asadi, A. Ghale [1 ]
Jabbarzade, O. [1 ]
Mobarake, S. K. Mousavi [1 ]
机构：
[1] Univ Tabriz, Dept Phys, Tabriz 51664, Iran
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS | 2017年 / 26卷 / 09期
关键词：
Shape coexistence; SO(6) representation; Interacting Boson Model (IBM); B(E2) transition rates; (n)over-cap(d) expectation value; quadrupole deformation; INTERACTING BOSON MODEL; NUCLEAR-DATA SHEETS; LIGHT TELLURIUM ISOTOPES; PHASE-TRANSITION; INTRUDER STATES; SHELL-MODEL; EVEN-EVEN; QUADRUPOLE-MOMENTS; CRITICAL-POINT; CHARGE RADII;
D O I：
10.1142/S0218301317500562
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
In this paper, we have studied the shape coexistence in the Hg180-190 isotopes. The SO(6) representation of eigenstates and a transitional Hamiltonian in the Interacting Boson Model (IBM) are used to consider the evolution from prolate to oblate shapes for systems with total boson number N = 9-12. Parameter free (up to overall scale factors) predictions for energy spectra and quadrupole transition rates are found to be in good agreement with experimental counterparts. The results for the control parameter of transitional Hamiltonian offer a combination of spherical and deformed shapes in these Hg isotopes and also more deviation from SO(6) limit is observed when the quadrupole deformation is decreased. Also, there are some suggestions about the expectation values of the (n) over cap (d) operator which are determined in the first state of ground, beta and gamma bounds and the control parameter of model.
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页数：21
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