Study of High-Spin States in 198Bi

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Zhou Xiaohong, Sun Xiangfu, Guo Yinxiang, Lei Xiangguo, Liu Zhong, Zhang Yuhu, Chen Xinfeng, Jin Hanjuan, Luo Yixiao, Wen Shuxian, Yuan Guanjun, Li Guangsheng and Yang Chunxiang. Study of High-Spin States in 198Bi[J]. Chinese Physics C, 1996, 20(S3): 243-251.
Zhou Xiaohong, Sun Xiangfu, Guo Yinxiang, Lei Xiangguo, Liu Zhong, Zhang Yuhu, Chen Xinfeng, Jin Hanjuan, Luo Yixiao, Wen Shuxian, Yuan Guanjun, Li Guangsheng and Yang Chunxiang. Study of High-Spin States in 198Bi[J]. Chinese Physics C, 1996, 20(S3): 243-251. shu
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Received: 1995-09-26
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    Supported by the National Natural Science Foundation of China.

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Study of High-Spin States in 198Bi

  • 1 Institute of Modem Physics, 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: The high-spin states of 198Bi have been studied via the reaction 187Re(16O, 5n)198Bi at 16O energies from 85-105MeV. 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 1 intrinsic Ge planar detector. A level scheme for 198Bi with 26 γ-rays was established for the first time, including a 15+ isomer with a measured half-life of 8.0±3.6ns. Based on the known level structure systematics in 200-206Bi, the level structure of 198Bi was qualitatively interpreted by using semi-empirical methods.

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