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Chinese Physics C> 1995, Vol. 19> Issue(5) : 479-480 

A New Heavy Neutron-Rich Isotope 239Pa

  •  Institute of Modern Physics, The Chinese Academy of Sciences Lanzhou 730000

  • A new heavy neutron-rich isotope 239Pa has been observed for the. first time in the interaction of 50MeV/u 18O with natU targets. Protactinium products were separated radiochemically from the complex mixture of the reaction products. The results observed from the decay of 239Pa and its daughter 239U show that a new heavy neutron-rich isotope 239Pa was produced and identified. The measured half-life is 106±30 min.
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    [1] K.Rykaczewskietal,Nucl.Phys.A499（1989）529.[2]K.J.Moody et al,GSIPreprint,GSI-87-43（1987）.[3]U.Reus,W.Westmeier,Atomic Data and Nuclear Data Table,29（1983）1.[4]M.R.Schmorak,Nuclear Data Sheets,66（1992）844.

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Yang Weifan, Yuan Shuanggui, Mou Wantong, Zhang Xueqian, Li Zongwei, Yu Xian, Gan Zaiguo, Liu Hongye, Guo Yingxiang, Zhao Jinhua, Lei Xiangguo, Guo Junsheng, Du Yifei, Zhao Lili and Zhang Xiang. A New Heavy Neutron-Rich Isotope 239Pa[J]. Chinese Physics C, 1995, 19(5): 479-480.
Yang Weifan, Yuan Shuanggui, Mou Wantong, Zhang Xueqian, Li Zongwei, Yu Xian, Gan Zaiguo, Liu Hongye, Guo Yingxiang, Zhao Jinhua, Lei Xiangguo, Guo Junsheng, Du Yifei, Zhao Lili and Zhang Xiang. A New Heavy Neutron-Rich Isotope 239Pa[J]. Chinese Physics C, 1995, 19(5): 479-480. shu
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Received: 1900-01-01
Revised: 1900-01-01
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A New Heavy Neutron-Rich Isotope 239Pa

    Corresponding author: Yang Weifan,
  • Institute of Modern Physics, The Chinese Academy of Sciences Lanzhou 730000
  • Received Date: 1900-01-01
  • Accepted Date: 1900-01-01
  • Available Online: 1995-05-05

Abstract: A new heavy neutron-rich isotope 239Pa has been observed for the. first time in the interaction of 50MeV/u 18O with natU targets. Protactinium products were separated radiochemically from the complex mixture of the reaction products. The results observed from the decay of 239Pa and its daughter 239U show that a new heavy neutron-rich isotope 239Pa was produced and identified. The measured half-life is 106±30 min.

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