γ-Unstable Bohr Hamiltonian with sextic potential for odd-A nuclei

被引：7

作者：

Sobhani, Hadi ^{[1
]}

Hassanabadi, Hassan ^{[1
]}

Bonatsos, Dennis ^{[2
]}

Pan, Feng ^{[3
,4
]}

Draayer, Jerry P. ^{[4
]}

机构：

[1] Shahrood Univ Technol, Fac Phys, Shahrood, Iran

[2] NCSR Demokritos, Inst Nucl & Particle Phys, GR-15310 Athens, Greece

[3] Liaoning Normal Univ, Dept Phys, Dalian 116029, Peoples R China

[4] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

来源：

NUCLEAR PHYSICS A | 2020年 / 1002卷

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

Bohr Hamiltonian; Odd-A nuclei; QUANTUM PHASE-TRANSITIONS; DATA SHEETS; SYMMETRIES;

D O I：

10.1016/j.nuclphysa.2020.121956

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, odd-A nuclei in the vibrational to gamma-soft transitional region are studied in the collective model, in which the odd-A system is described by the Bohr Hamiltonian with the quasi exactly solvable sextic beta-part potential for the even-even core coupled with a single nucleon in a j = 3/2 orbit via the beta-independent five-dimensional spin-orbit interaction and the total angular momentum degeneracy breaking term. To test the validity of the coupling scheme, we use the model to reproduce experimentally available level energies and B(E2) values of Ir-187,Ir-189,Ir-191,Ir-193,Ir-195. It is clearly shown from both the level energies and the known B(E2) values for Ir-191,Ir-193 fitted that the model with the beta-independent five-dimensional spin orbit interaction and the total angular momentum degeneracy breaking term seems adequate to describe the low-lying level pattern and the structure of these odd-A nuclei. (C) 2020 Elsevier B.V. All rights reserved.

引用

页数：11

共 42 条

[1] Shape phase transition in odd nuclei in a multi-j model:: The UB(6)⊗UF(12) case [J].