Electric-dipole transitions in ^(165)Er  

作　　者：王世陶 周小红 张玉虎 郑勇 柳敏良 马飞 胡钧 陈亮 张昕 张宁涛 竺礼华 吴晓光 李广生 

机构地区：[1]Institute of Modern Physics, Chinese Academy of Sciences [2]Graduate University of Chinese Academy of Sciences [3]China Institute of Atomic Energy

出　　处：《Chinese Physics C》2009年第8期629-632,共4页中国物理C（英文版）

基　　金：Supported in part by National Natural Science Foundation of China (10825522, 10735010, 10805058, 10775158);Chinese Academy of Sciences, Major State Basic Research Development Program of China (2007CB815000);West Light Foundation of The Chinese Academy of Sciences (O803080XBB)

摘　　要：High-spin states of ^165Er were studied using the ^160Gd（^9Be, 4n）reaction at beam energies of 42 and 45 MeV. The previously known bands based on the ν5/2^-[523] and ν5/2^＋[642] configurations have been extended to high-spin states. Electric-dipole transitions linking these two opposite parity bands were observed. Relatively large B（E1） values have been extracted experimentally and were attributed to octupole softness.High-spin states of ^165Er were studied using the ^160Gd（^9Be, 4n）reaction at beam energies of 42 and 45 MeV. The previously known bands based on the ν5/2^-[523] and ν5/2^＋[642] configurations have been extended to high-spin states. Electric-dipole transitions linking these two opposite parity bands were observed. Relatively large B（E1） values have been extracted experimentally and were attributed to octupole softness.

关 键 词：fusion-evaporation reaction high-spin state electric-dipole transition octupole softness 

分 类 号：O562[理学—原子与分子物理]