Signature splitting of the πh11/2 band and high-spin structures in 155Tb

被引：0

作者：

Li Tao ^{[1
]}

Chen Bao-Ren ^{[1
,2
]}

Liu Shu-Xin ^{[1
,2
]}

机构：

[1] Peking Univ, Sch Phys, Beijing 100871, Peoples R China

[2] Ctr Theoret Nucl Phys, Natl Lab Heavy Ion Collis, Lanzhou 730000, Peoples R China

来源：

CHINESE PHYSICS C | 2010年 / 34卷 / 07期

基金：

中国国家自然科学基金;

关键词：

rare-earth; high-j intruder orbital; alignment; particle-number-conserving method; back-bending; STATES;

D O I：

10.1088/1674-1137/34/7/006

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：

Seven experimentally observed bands of Tb-155 are analyzed in detail, using the particle-number-conserving method for treating the cranked shell model with monopole and quadrupole pairing interactions. We satisfactorily reproduce the experimental alignments and especially focus on the microscopic mechanism of the second back-bending and the influence of pair interaction on ultrahigh spins. Our calculated results show that the pi i(13/2) orbitals are too high to give a contribution to the moment of inertia below (h) over barw approximate to 0.7 MeV. Instead, the crossing between the pi[541)1/2 and other proton orbitals is responsible for the second back-bending. We assign a possible configuration to the decoupled band found in Tb-155 and predict eleven bands which are experimentally unobserved.

引用

页码：958 / 963

页数：6

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