High-spin states of ^(125)Sb:Particle-core excitation coupling

作     者：刘忠 张玉虎 马英君 Y.Sasaki K.Yamada H.Oshima H.Yokose M.Ishizuka T.Komatsubara K.Furuno 

作者机构：Institute of Modern PhysicsChinese Academy of SciencesLanzhou 730000China Institute of Physics and Tandem Accelerator CenterUniversity of TsukubaIbaraki 305-0006Japan 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2003年第46卷第4期

页      面：390-397页

核心收录：

学科分类：08[工学] 0827[工学-核科学与技术] 082701[工学-核能科学与工程] 

基　　金：the National Natural Science Foundation of China(Grant Nos.19705011,10025525) Major State Research Development Program(Grant No.G2000077400) the Chinese Academy of Sciences and JSPS Invitation Fellowship(Grant No.L00515) 

主　　题：in-beam γ spectroscopy isomer particle-core coupling 

摘      要：Excited states of125Sb have been studied using in-beam γ spectroscopy techniques via the124Sn(7Li, α2n) reaction at a beam energy of 32 MeV. A high-spin level scheme including 21 new γ-transitions and 14 new excited states have been established. Three isomers have been identified at 1970, 2110 and 2471 keV and the ranges of their half-lives have been estimated from the delayed coincidence data. The level structure of125Sb is discussed in terms of particle-core excitation coupling. With the help of empirical shell model calculations the three isomers are proposed to have three-quasiparticle πg7/2?v(h 11/2 s 1/2)5?, πg7/2?v(h 11/2 d 3/2)7? and πg7/2?v(h 11 2/2 )10 + configurations, respectively.