Study of Level Structure in Neutron-Deficient 197Bi

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Zhou Xiaohong, Sun Xiangfu, Guo Yinxiang, Lei Xiangguo, Liu Zhong, Chen Xinfeng, Zhang Yuhu, Jin Hanjuan, Luo Yixiao, Wen Shuxian, Yuan Guanjun, Li Guangsheng and Yang Chunxiang. Study of Level Structure in Neutron-Deficient 197Bi[J]. Chinese Physics C, 1995, 19(S4): 341-347.
Zhou Xiaohong, Sun Xiangfu, Guo Yinxiang, Lei Xiangguo, Liu Zhong, Chen Xinfeng, Zhang Yuhu, Jin Hanjuan, Luo Yixiao, Wen Shuxian, Yuan Guanjun, Li Guangsheng and Yang Chunxiang. Study of Level Structure in Neutron-Deficient 197Bi[J]. Chinese Physics C, 1995, 19(S4): 341-347. shu
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Received: 1995-03-14
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    Supported by the National Natural Science Foundation of China.

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Study of Level Structure in Neutron-Deficient 197Bi

  • 1 Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou, China;
  • 2 China Institute of Atomic Energy, Beijing, China
Fund Project:  Supported by the National Natural Science Foundation of China.

Abstract: High-spin states of 197Bi are populated by bombarding a thick natural Re target with 16O beams of 100 MeV. Using comprehensive γ-γ-t coincidence measurements, three new isomers of 197Bi are confirmed, 11 new γ-transitions are identified, and errors in the existing level scheme are corrected. According to the systematic level structure of odd-A Bi isotopes, the configuration and decay property of the new isomer of 197Bi with t1/2=19.3±4.9 ns are discussed. The γ-ray angular distributions are also measured. A new level scheme of 197Bi is proposed.

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