Signaturesplittingoftheπh11/2bandandhigh-spinstructuresin155Tb

被引：0

作者：

李涛 ^{[1
]}

陈宝仁 ^{[1
]}

刘树新 ^{[1
,2
]}

机构：

[1] School of Physics,Peking University

[2] Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Collisions

来源：

中国物理C | 2010年 / 34卷 / 07期

关键词：

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

D O I：

暂无

中图分类号：

O571.2 [原子核的结构与性质];

学科分类号：

0827 ; 082701 ;

摘要：

Seven experimentally observed bands of 155Tb 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 πi13/2 orbitals are too high to give a contribution to the moment of inertia below ω≈ 0.7 MeV.Instead,the crossing between the π[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 155Tb and predict eleven bands which are experimentally unobserved.

引用

页码：958 / 963

页数：6