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

Synthesis and Identification of the New Transuranium Neutron-deficient Isotope²³⁵Am

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

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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.

References

[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.

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Synthesis and Identification of the New Transuranium Neutron-deficient Isotope²³⁵Am

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 isotope²³⁵Am was synthesized in the reaction of²³⁸Pu (p, 4n)²³⁵Am by using 35MeV proton bombarding²³⁵Pu target. The Products were transported by the He-jet system. The Am was seperated from the reaction products using radiochemistry method. The y-ray of²³pu and X-ray of Np following EC decay of²³⁵Am were observed. Based on the growth-decay cruve of X-ray of Np and the X-y coincidence measurements, the synthesis of²³⁵Am was confirmed for the first time. The measured halflife of 35Am is 15±5min.