Multi-quasiparticle excitations in ^(145)Tb  

作　　者：T. Hayakawa M. Oshima T. Toh T. Shizuma J. Katakura Y. Hatsukawa M. Matsuda H. Kusakari M. Sugawara 

机构地区：[1]Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan,Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan,Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan,Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan,Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan,Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan,Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan,Chiba University, Inage-ku, Chiba 263-8512, Japan,Chiba Institute of Technology, Narashino, Chiba 275-0023, Japan

出　　处：《Science China(Physics,Mechanics & Astronomy)》2004年第5期561-570,共10页中国科学：物理学、力学、天文学（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(Grant No.10005012);the Major State Basic Research Development Program of China(Contract No.TG2000077402).

摘　　要：High-spin states in 145Tb have been populated using the 118Sn (32S, 1p4n) reaction at beam energy of 165 MeV. The level scheme of 145Tb has been established up to Ex ≈7.4 MeV. The level scheme shows characteristics of a spherical or slightly oblate nucleus. Based on the systematic trends of the level structure in the neighboring N = 80 isotones, the level structure in 145Tb below 2 MeV excitation is well explained by coupling an h11/2valence proton to the even-even 144Gd core. Above 2 MeV excitation, most of the yrast levels are interpreted with multi-quasiparticle shell-model configurations.High-spin states in145Tb have been populated using the118Sn (32S, 1p4n) reaction at beam energy of 165 MeV. The level scheme of145Tb has been established up toEx≈7.4 MeV. The level scheme shows characteristics of a spherical or slightly oblate nucleus. Based on the systematic trends of the level structure in the neighboringN=80 isotones, the level structure in145Tb below 2 MeV excitation is well eplained by coupling anh 11/2 valence proton to the even-even144Gd core. Above 2 MeV excitation, most of the yrast levels are interpreted with multi-quasiparticle shell-model configurations.

关 键 词：HIGH-SPIN states  LEVEL scheme  multi-quasiparticle excitations. 

分 类 号：O572.2[理学—粒子物理与原子核物理]