Production and Assignment of a New Transuranium Neutron-Deficient Isotope 235Am
SHI Li-jun, GUO Jun-sheng, LIU Hong-ye, GAN Zai-guo, YANG Wei-fan, MOU Wan-tong, GUO Tian-rui, SHEN Shui-fa, FANG Ke-ming, YUAN Shuang-gui, QIN Zhi, ZHANG Xue-qian, MA Rui-chang, ZHONG Ji-quan,WANG Shu-hong1, KONG Deng-ming1, QIAO Ji-min1
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000
1Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039
Production and Assignment of a New Transuranium Neutron-Deficient Isotope 235Am
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000
1Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039
Abstract： A new transuranium neutron-deficient isotope 235Am was produced via the reaction of 238Pu ( p , 4n) 235Am by using a 35 MeV proton beam. The recoiled products were collected by a helium-jet and long-capillary system. Americium isotopes were separated out by a rapid radiochemical method. X-ray, γ-ray, and x-γ coincidence measurements were taken in the study. According to 235Pu decay γ-ray and Np K x-ray growth-decay property, 235Am was definitely identified and its half life is determined as 15 ± 5 min.
(β-decay;double β-decay; electron and muon capture)
引用本文:
SHI Li-jun;GUO Jun-sheng;LIU Hong-ye;GAN Zai-guo;YANG Wei-fan;MOU Wan-tong;GUO Tian-rui;SHEN Shui-fa;FANG Ke-ming;YUAN Shuang-gui;QIN Zhi;ZHANG Xue-qian;MA Rui-chang;ZHONG Ji-quan;WANG Shu-hong;KONG Deng-ming;QIAO Ji-min. Production and Assignment of a New Transuranium Neutron-Deficient Isotope 235Am[J]. 中国物理快报, 1997, 14(4): 270-272.
SHI Li-jun, GUO Jun-sheng, LIU Hong-ye, GAN Zai-guo, YANG Wei-fan, MOU Wan-tong, GUO Tian-rui, SHEN Shui-fa, FANG Ke-ming, YUAN Shuang-gui, QIN Zhi, ZHANG Xue-qian, MA Rui-chang, ZHONG Ji-quan, WANG Shu-hong, KONG Deng-ming, QIAO Ji-min. Production and Assignment of a New Transuranium Neutron-Deficient Isotope 235Am. Chin. Phys. Lett., 1997, 14(4): 270-272.
1997, Vol. 14 
