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Chinese Physics C> 1996, Vol. 20> Issue(3) : 286-288 

Synthesis and Identification of the New Transuranium Neutron-deficient Isotope 235Am

  •  Institute of Modem Physics, The Chiners Academy of Sciences, Lanzhou,7300002 Institute of High Energy Physics, The Chinese Academy of Sciences, Beijing 100039

  • A new neutron-deficient isotope 235Am was synthesized in the reaction of 238Pu (p, 4n) 235Am by using 35MeV proton bombarding 235Pu target. The Products were transported by the He-jet system. The Am was seperated from the reaction products using radiochemistry method. The y-ray of 23pu and X-ray of Np following EC decay of 235Am were observed. Based on the growth-decay cruve of X-ray of Np and the X-y coincidence measurements, the synthesis of 235Am was confirmed for the first time. The measured halflife of 35Am is 15±5min.
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    [1] G.T.Seaborg,LBL-15685,（1983）[2]M.S.Antony et al,Chart of the Nuclides,France（1992）[3]T.Horiguchi et al,Chart of the Nuclides,Japan（1992）.

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Guo Junsheng, Gan Zaiguo, Liu Hongye, Shi Lijun, Yang Weifan, Mou Wantong, Guo Tianrui, Fang Keming, Shen Shuifa, Yuan Shuanggui, Zhong Jiquan, Zhang Xueqian, Qin Zhi, Ma Ruichang, Wang Shuhong, Kong Dengming and Qiao Jimin. Synthesis and Identification of the New Transuranium Neutron-deficient Isotope 235Am[J]. Chinese Physics C, 1996, 20(3): 286-288.
Guo Junsheng, Gan Zaiguo, Liu Hongye, Shi Lijun, Yang Weifan, Mou Wantong, Guo Tianrui, Fang Keming, Shen Shuifa, Yuan Shuanggui, Zhong Jiquan, Zhang Xueqian, Qin Zhi, Ma Ruichang, Wang Shuhong, Kong Dengming and Qiao Jimin. Synthesis and Identification of the New Transuranium Neutron-deficient Isotope 235Am[J]. Chinese Physics C, 1996, 20(3): 286-288. shu
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Received: 1900-01-01
Revised: 1900-01-01
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Synthesis and Identification of the New Transuranium Neutron-deficient Isotope 235Am

    Corresponding author: Guo Junsheng,
  • Institute of Modem Physics, The Chiners Academy of Sciences, Lanzhou,7300002 Institute of High Energy Physics, The Chinese Academy of Sciences, Beijing 100039
  • Received Date: 1900-01-01
  • Accepted Date: 1900-01-01
  • Available Online: 1996-03-05

Abstract: A new neutron-deficient isotope 235Am was synthesized in the reaction of 238Pu (p, 4n) 235Am by using 35MeV proton bombarding 235Pu target. The Products were transported by the He-jet system. The Am was seperated from the reaction products using radiochemistry method. The y-ray of 23pu and X-ray of Np following EC decay of 235Am were observed. Based on the growth-decay cruve of X-ray of Np and the X-y coincidence measurements, the synthesis of 235Am was confirmed for the first time. The measured halflife of 35Am is 15±5min.

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