Nuclear collectivity in the even–even ^(164-178)Yb along the yrast line  

作　　者：Hui-Fang Li Hua-Lei Wang Min-Liang Liu 

机构地区：[1]School of Physics and Engineering, Zhengzhou University [2]Institute of Modern Physics, Chinese Academy of Sciences

出　　处：《Nuclear Science and Techniques》2019年第1期89-96,共8页核技术（英文）

基　　金：supported by the National Natural Science Foundation of China(No.11675148);the Project of Youth Backbone Teachers of Colleges and Universities of Henan Province(No.2017GGJS008);the Outstanding Young Talent Research Fund of Zhengzhou University(No.1521317002);the Physics Research and Development Program of Zhengzhou University

摘　　要：The collective properties along the yrast line in well-deformed even–even ^(164-178)Yb isotopes are investigated by pairing self-consistent total Routhian surface(TRS) calculations and extended E-gamma over spin(EGOS) curves. The calculated results from ground-state deformations, e.g., β_2, are in agreement with previous theoretical predictions and available experimental data.The basic behaviors of moment of inertia are reproduced by the present TRS calculations and discussed based on the aligned angular momenta. The centipede-like E-GOS curves indicate that the non-rotational components appear along the yrast sequences in these nuclei, which can explain the discrepancy in the moment of inertia between theory and experiment to some extent. The further extended E-GOS curves, which include the first-order rotation–vibration coupling, appear to provide possible evidence of vibrational effects in the well-deformed nuclei of ^(164-178)Yb.The collective properties along the yrast line in well-deformed even–even ^(164-178)Yb isotopes are investigated by pairing self-consistent total Routhian surface(TRS) calculations and extended E-gamma over spin(EGOS) curves. The calculated results from ground-state deformations, e.g., β_2, are in agreement with previous theoretical predictions and available experimental data.The basic behaviors of moment of inertia are reproduced by the present TRS calculations and discussed based on the aligned angular momenta. The centipede-like E-GOS curves indicate that the non-rotational components appear along the yrast sequences in these nuclei, which can explain the discrepancy in the moment of inertia between theory and experiment to some extent. The further extended E-GOS curves, which include the first-order rotation–vibration coupling, appear to provide possible evidence of vibrational effects in the well-deformed nuclei of ^(164-178)Yb.

关 键 词：VIBRATIONAL effect Total Routhian surface calculation E-GOS CURVE 

分 类 号：TL[核科学技术]