A New Heavy Neutron-Rich Isotope <sup>239</sup>Pa

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; Zhang Xiang

Chinese Physics C> 1995, Vol. 19> Issue(S3) : 221-222

A New Heavy Neutron-Rich Isotope ²³⁹Pa

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou, China

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A new heavy neutron-rich isotope ²³⁹Pa has been produced in the interaction of 50-MeV/u ¹⁸O ions 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 the new heavy-rich isotope ²³⁹Pa was synthesized and identified for the first time. The half-life of the ²³⁹Pa was determined to be 106±30 min.
- new nuclide ,
- transfer reaction ,
- chemical separation ,
- synthesis and identification

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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(S3): 221-222.

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Received: 1995-03-14

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Supported by the National Natural Science Foundation of China and Chinese Academy of Sciences.

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沈阳化工大学材料科学与工程学院沈阳 110142

A New Heavy Neutron-Rich Isotope ²³⁹Pa

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou, China

Received Date: 1995-03-14

Fund Project: Supported by the National Natural Science Foundation of China and Chinese Academy of Sciences.

Abstract: A new heavy neutron-rich isotope ²³⁹Pa has been produced in the interaction of 50-MeV/u ¹⁸O ions 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 the new heavy-rich isotope ²³⁹Pa was synthesized and identified for the first time. The half-life of the ²³⁹Pa was determined to be 106±30 min.

A New Heavy Neutron-Rich Isotope ²³⁹Pa

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A New Heavy Neutron-Rich Isotope ²³⁹Pa

A New Heavy Neutron-Rich Isotope ²³⁹Pa