| 1 | High spin states in stable nucleus ^(84)Sr显示文摘High spin states of 84Sr were populated through the reaction 70Zn(18O,4n)84Sr at 75 MeV beam energy.Measurement of excitation function,γ-γ coincidences,directional correlation from oriented state (DCO) ratios and γ-transition intensities were performed using eight anticompton HPGe detectors and one planar HPGe detector.Based on the measured results,a new level scheme of 84Sr was established in which 12 new states and nearly 30 new γ-transitions were identified in the present work.The positive-parity states of the new level scheme were compared with the results from calculations in the framework of the projected shell model (PSM).One negative-parity band was extended to spin Iπ=19-and it can be found that in the high spin states,the γ-transition energies show the nature of signature staggering.The negative-parity band levels are in good agreement with deformed configuration-mixing shell model (DCM) calculations. | KANG XuZhong1,2,SHEN ShuiFa1,2,3,4*,HAN GuangBing5,PAN Feng3,4,GU JianZhong6,DRAAYER J P4,WU XiaoGuang6,ZHU LiHua6 & WEN TingDun7 1 Key Laboratory of Nuclear Resources and Environment (East China Institute of Technology),Ministry of Education,Nanchang 330013,China 2 School of Nuclear Engineering and Technology,East China Institute of Technology,Fuzhou 344000,China 3 Department of Physics,Liaoning Normal University,Dalian 116029,China 4 Department of Physics and Astronomy,Louisiana State University,Baton Rouge,LA 70803-4001,USA 5 School of Physics,Shandong University,Jinan 250100,China 6 China Institute of Atomic Energy,Beijing 102413,China 7 Department of Physics,North University of China,Taiyuan 030051,China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，10： | 4 |
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