Observation of New Nuclide <sup>239</sup>Pa

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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