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Chinese Physics C> 1999, Vol. 23> Issue(11) : 1039-1043 

Observation of Heavy Cluster Emission From Radioactive 230U Nuclei

  •  Pan Qiangyan; Yuan Shuanggui; Yang Weifan; Li Zongwei; Ma Taotao;Guo Junsheng; Liu Mingyi; Liu Hongye; Xu Shuwei; Gan ZaiguoInstitute of Midern Physics, The Chinese Academy of sciences, Lanzhou 730000Kong Dengming; Qiao Jimin; Luo Zihua; Zhang Mutian; Wang ShuhongInstitute of High Energy Physics, The Chinese Academy of sciences, Beijing 100039

  • 230Pa was produced with the reaction 232TH (p, 3n)230Pa in the irradiation powder targets of ThO2 with 35 MeV Proton beam. Sources of 230Pa -230U were prepared by radiochemical method. Using solid-state track registration detectors, two events of 230U decay with heavy cluster emission have been observed. The preliminary branching ratio to decay comes out to be B=λNe/λα=(1.3±1.8)×10－14.
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    [1] Sandulescu A et al. Sov. J. Part. Nucl., 1980, 11:528–5322 Lu Xiting. Nucl. Phys. (in Chinese). Beijing Atomic Energy Press, 1981, 92(卢希庭.原子核物理.北京:原子能出版社,1981,92) 3 Rose H J, Jones G A. Nature (London), 1984, 307:2454 Gales S et al. Phys. Rev . Lett., 1984, 53:759–762 5 Hussonnois M, Ardisson G Z. Phys., 1994, A349:311–3146 Poenaru D N et al. Atomic Data and Nuclear Data Tables, 1991, 48:231–327 7 Oganessian Yu Ts et al. Z. Phys., 1994, A349:341–342 8 Guglielmetti A et al. Phys. Rev., 1995, C52:740–743 9 Li Zongwei, Liu Hongye, Pan Qiangyan et al. Nucl. Tech. (in Chinese), 1998, 21(6):340–343(李宗伟,刘洪业,潘强岩等,核技术,1998,21(6):340—343) 10 Price P B, Stevenson J D, Barwick S W. Phys. Rev. Lett., 1985, 54(4):297–299

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Pan Qiangyan, Yuan Shuanggui, Yang Weifan, Li Zongwei, Ma Taotao, Guo Junsheng, Liu Mingyi, Liu Hongye, Xu Shuwei, Gan Zaiguo, Kong Dengming, Qiao Jimin, Luo Zihua, Zhang Mutian and Wang Shuhong. Observation of Heavy Cluster Emission From Radioactive 230U Nuclei[J]. Chinese Physics C, 1999, 23(11): 1039-1043.
Pan Qiangyan, Yuan Shuanggui, Yang Weifan, Li Zongwei, Ma Taotao, Guo Junsheng, Liu Mingyi, Liu Hongye, Xu Shuwei, Gan Zaiguo, Kong Dengming, Qiao Jimin, Luo Zihua, Zhang Mutian and Wang Shuhong. Observation of Heavy Cluster Emission From Radioactive 230U Nuclei[J]. Chinese Physics C, 1999, 23(11): 1039-1043. shu
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Received: 1998-09-04
Revised: 1900-01-01
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Observation of Heavy Cluster Emission From Radioactive 230U Nuclei

    Corresponding author: Pan Qiangyan,
  • Pan Qiangyan; Yuan Shuanggui; Yang Weifan; Li Zongwei; Ma Taotao;Guo Junsheng; Liu Mingyi; Liu Hongye; Xu Shuwei; Gan ZaiguoInstitute of Midern Physics, The Chinese Academy of sciences, Lanzhou 730000Kong Dengming; Qiao Jimin; Luo Zihua; Zhang Mutian; Wang ShuhongInstitute of High Energy Physics, The Chinese Academy of sciences, Beijing 100039
  • Received Date: 1998-09-04
  • Accepted Date: 1900-01-01
  • Available Online: 1999-11-05

Abstract: 230Pa was produced with the reaction 232TH (p, 3n)230Pa in the irradiation powder targets of ThO2 with 35 MeV Proton beam. Sources of 230Pa -230U were prepared by radiochemical method. Using solid-state track registration detectors, two events of 230U decay with heavy cluster emission have been observed. The preliminary branching ratio to decay comes out to be B=λNe/λα=(1.3±1.8)×10－14.

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