Low-lying state investigations of odd-A Mn isotopes around N=28  

作　　者：叶欢仪 李剑 Dong Yang 金华 黄小龙 Huanyi Ye;Jian Li;Dong Yang;Hua Jin;Xiaolong Huang(College of Physics,Jilin University,Changchun 130012,China;National Basic Science Data Center,Beijing 100190,China;School of Arts and Sciences,Shanghai Dianji University,Shanghai 201306,China;China Institute of Atomic Energy,Beijing 100000,China)

机构地区：[1]College of Physics,Jilin University,Changchun 130012,China [2]National Basic Science Data Center,Beijing 100190,China [3]School of Arts and Sciences,Shanghai Dianji University,Shanghai 201306,China [4]China Institute of Atomic Energy,Beijing 100000,China

出　　处：《Communications in Theoretical Physics》2023年第2期125-132,共8页理论物理通讯（英文版）

基　　金：the Natural Science Foundation of Jilin Province(Grant No.20220101017JC);National Natural Science Foundation of China(Grant Nos.11675063,11205068 and U1832139);National Basic Science Data Center‘Medical Physicas Data Base’(NO.NBSDC-DB-23);the Key Laboratory of Nuclear Data foundation(JCKY2020201C157)

摘　　要：Based on the systematic studies for low-lying states of the odd-A^(49-57)Mn isotopes,the groundstates inversion and the rotational properties of a ground-state-based sequence are revealed and discussed.The energy levels of low-lying states and electromagnetic moments in odd-A^(49-57)Mn isotopes have been well reproduced in shell-model calculations,and the above phenomena could be understood with obviously different occupation numbers in proton orbitals such asπf_(7/2)andπp_(3/2),which changes similarly with the obtained quadrupole deformation in covariant density functional theory(CDFT).After considering the coupling of collective rotation and intrinsic single-particle motion,the available experimental magnetic moments in53Mn and adjacent nuclei can be well explained with CDFT.The present calculations suggest that the 5/2^(-)and 7/2^(-)states in53Mn are formed byπ5/2^(-)[312]andπ7/2^(-)[303]respectively.Together with the behavior of levels,this provides proofs for the level sequences of low-lying states in53Mn distinct from the K^(π)=5/2^(-)rotational band in^(49)Cr and other odd-A Mn isotopes.

关 键 词：ground-state spin MN covariant density functional theory shell model 

分 类 号：O562.6[理学—原子与分子物理]