g factors of nuclear low-lying states:A covariant description  

作　　者：YAO JiangMing PENG Jing MENG Jie RING Peter 

机构地区：[1]School of Physical Science and Technology, Southwest University, Chongqing 400715, China [2]Department of Physics, Beijing Normal University, Beijing 100875, China [3]State Key Laboratory for Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China [4]School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China [5]Department of Physics, University of Stellenbosch, Stellenbosh, South Africa [6]Physik-Department der Technischen Universitat Munchen, D-85748 Garching, Germany

出　　处：《Science China(Physics,Mechanics & Astronomy)》2011年第2期198-203,共6页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Basic Research Program of China (Grant No.2007CB815000);the National Natural Science Foundation of China (Grant Nos.10947013, 10975008, 10705004 and 10775004);the Fundamental Research Funds for the Center Universities(Grant No.XDJK2010B007);the Southwest University Initial Research Foundation Grant to Doctor (Grant No.SWU109011);the Bundesministerium fur Bildung und Forschung,Germany (Grant No.06 MT 246);the DFG cluster of excellence "Origin and Structure of the Universe"(www.universe-clusterde)

摘　　要：The g factors and spectroscopic quadrupole moments of low-lying excited states 2+1,…,81+ in 24Mg are studied in a covariant density functional theory.The wave functions are constructed by configuration mixing of axially deformed mean-field states projected on good angular momentum.The mean-field states are obtained from the constraint relativistic point-coupling model plus BCS calculations using the PC-F1 parametrization for the particle-hole channel and a density-independent delta-force for the particle-particle channel.The available experimental g factor and spectroscopic quadrupole moment of 21+ state are reproduced quite well.The angular momentum dependence of g factors and spectroscopic quadrupole moments,as well as the effects of pairing correlations are investigated.The g factors and spectroscopic quadrupole moments of low-lying excited states 21^＋,…,81^＋ in ^24Mg are studied in a covariant density functional theory.The wave functions are constructed by configuration mixing of axially deformed mean-field states projected on good angular momentum.The mean-field states are obtained from the constraint relativistic point-coupling model plus BCS calculations using the PC-F1 parametrization for the particle-hole channel and a density-independent delta-force for the particle-particle channel.The available experimental g factor and spectroscopic quadrupole moment of 21^＋ state are reproduced quite well.The angular momentum dependence of g factors and spectroscopic quadrupole moments,as well as the effects of pairing correlations are investigated.

关 键 词：covariant density functional theory magnetic moment g factor spectroscopic quadrupole moment 

分 类 号：O571.21[理学—粒子物理与原子核物理] O571.23[理学—物理]