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Chinese Physics C> 1992, Vol. 16> Issue(8) : 765-766 

New Neutron-Rich Nuclide 185Hf

  •  Institute of Modern Physics,Academia Sinica,Lanzhou 730000

  • New neutron-rich nuclide 185Hf has been identified for the first time.The 185Hf was produced via the 186W(n,2p)185Hf reaction by 14MeV neutron irradiation of natural metallic tungsten powder and separated by radiochemical methods.The identification of 185Hf was based on the observation of decay γ-ray of its daughter 185Ta.A half-life of 3.5±0.6min was determined for 185Hf by fitting the measured growth and decay curve of the 177.59keV γ-ray which is the strongest decay γ-ray of 185Ta.In addition,a new γ-ray of 164.5±0.5keV was found and assigned to 185Hf.
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    [1] Du Yifei, Jiao Dunpang and Yin Xijin, IMP Annral Report, (1990); 123.[2] E.Browne, Nuclear Data Sheets, 58 (1989), 441.[3] A.Staudt, E. Bender,K. Muto and H. V. Klapdor-Kleingrothaus, Atomic Data and Nuclear Data Tables, 44 (1990), 79.

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YUAN Shuang-Gui, ZHANG Tian-Mei, PAN Qiang-Yan, ZHANG Xue-Qian and XU Shu-Wei. New Neutron-Rich Nuclide 185Hf[J]. Chinese Physics C, 1992, 16(8): 765-766.
YUAN Shuang-Gui, ZHANG Tian-Mei, PAN Qiang-Yan, ZHANG Xue-Qian and XU Shu-Wei. New Neutron-Rich Nuclide 185Hf[J]. Chinese Physics C, 1992, 16(8): 765-766. shu
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Received: 1900-01-01
Revised: 1900-01-01
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New Neutron-Rich Nuclide 185Hf

    Corresponding author: YUAN Shuang-Gui,
  • Institute of Modern Physics,Academia Sinica,Lanzhou 730000
  • Received Date: 1900-01-01
  • Accepted Date: 1900-01-01
  • Available Online: 1992-08-05

Abstract: New neutron-rich nuclide 185Hf has been identified for the first time.The 185Hf was produced via the 186W(n,2p)185Hf reaction by 14MeV neutron irradiation of natural metallic tungsten powder and separated by radiochemical methods.The identification of 185Hf was based on the observation of decay γ-ray of its daughter 185Ta.A half-life of 3.5±0.6min was determined for 185Hf by fitting the measured growth and decay curve of the 177.59keV γ-ray which is the strongest decay γ-ray of 185Ta.In addition,a new γ-ray of 164.5±0.5keV was found and assigned to 185Hf.

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