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High-Spin States in  ̄(198)Bi

Zhou Xiaohong;Sun Xiangfu;Guo Yingxiang;Lei Xiangguo;liu Zhong;Zhang Yuhu;Chen Xinfeng;Jin Hanjuan;Luo Yixiao(Institute of Modern Physics,The Chinese Academy of Sciences,Lanzhou 730000)Wen Shuxian;Yuan Guanjun;Li Guangsheng;Yang Chunxiang(China Institute  
The high-spin states in 198Bi have been studied with the 187Re(16O,5n)198Bi reaction at 16O energies between 85 and 105 MeV.In-beam measurements of γ-ray excitation functions γ-γ-t coincidences and γ-ray angular distributions were carried out with 6 BGO(AC)HPGe detectors and an intrinsic Ge planar detector.A level scheme of 198Bi with 26 γ-rays was established for the first time,and an 15+ isomer was determined with t1/2=8.0±3.6ns.Based on the known level systematics in 200-206Bi,the level structure in 198Bi was qualitatively interpreted.
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