New Neutron-Rich Nuclide <SUP>185</SUP>Hf

YUAN Shuang-Gui; ZHANG Tian-Mei; PAN Qiang-Yan; ZHANG Xue-Qian; XU Shu-Wei

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

New Neutron-Rich Nuclide ¹⁸⁵Hf

Institute of Modern Physics,Academia Sinica,Lanzhou 730000

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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.

References

[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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沈阳化工大学材料科学与工程学院沈阳 110142

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.