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The Deformation-Driving Character of the 1/2 ̄-[541] Orbit in  ̄(171)Lu

Ma Yingjun; Zheng Hua;Sun Huibin;Yang Hongting;Zhou Shangui;Ding Yougui; Huo Junde; Liu Yunzuo(Department of Physics, Jilin University,Changchun 130023).Liu Xiangan; Wen Shuxian;Yang Chunxiang(China Institute of Atomic Energy,Beijing 102413)  
The 1/2-[541] band in 171Lu is extended up to neutron crossing by using heavy-ion induced reaction 160Gd(19F, 6n2p) at a bombarding energy of 92MeV.It shows delayed neutron crossing frequency in comparison with the even-even neighbors.Calculations based on cranked shell model suggest that the role played by the deformation-drving effect of the πh9/2[541]1/2- orbit shouldn't be ignored in the delay of the bandcrossng in 171Lu.
【Fund】: 国家自然科学基金
【CateGory Index】: O614.347
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