Chin. Phys. Lett.  1996, Vol. 13 Issue (12): 896-898    DOI:
Original Articles |
Observation of New Nuclide 239Pa
YUAN Shuang-gui;YANG Wei-fan;MOU Wan-tong;ZHANG Xue-qian;LI Zong-wei
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000
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YUAN Shuang-gui, YANG Wei-fan, MOU Wan-tong et al  1996 Chin. Phys. Lett. 13 896-898
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Abstract A new nuclide 239Pa was produced by 50MeV/u l8O bombardment of natural uranium via multi-nucleon transfer reactions (238U-lp+2n). Protactinium was chemically separated from the uranium target and other produced elements. Then in that chemical fraction the growth and decay of 239U gamma rays were observed, identifying the 239U parent as 239Pa. Subsequent to 239Pa β- decay, with a half-life of 106±30min, gamma rays of 522.0, 562.0, 638.5 and 681.0keV were also observed.

Keywords: 27.90.+b      23.40.-s     
Published: 01 December 1996
PACS:  27.90.+b (A ≥ 220)  
  23.40.-s (β-decay;double β-decay; electron and muon capture)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y1996/V13/I12/0896
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YUAN Shuang-gui
YANG Wei-fan
MOU Wan-tong
ZHANG Xue-qian
LI Zong-wei
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