Chinese Physics C > 1998, Vol. 22 > Issue(12): 1057-1060

A New Isotope of Hafnium:¹⁸⁶Hf

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000

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Abstract：
60MeV /u ¹⁸O ion beam delivered by the Heavy Ion Research Facility in Lanzhou (HIRFL) bombarded the natural tungsten targets. The ¹⁸⁶Hf was produced by multinucleon transfer reacions. The hafnium fraction was separated radiochemically from the mixture of tungsten and the reaction products. The γ activity was measured with a HPGe detector. The growth and decay of ¹⁸⁶)Ta γ-rays has been observed, which indicates the (186)Hf as a parent of ¹⁸⁶Ta were produced. The half-life of ¹⁸⁶Hf has been determined to be (2.6±1.2)min.

References

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Loveland W et al Nucl Phys,1987., A471(1,2):175c—190c[2] Daniel Guerreau et al. Nucl Phys., 1986, A447:37c─66c [3] Mcgaughey P L et aL Phys Rev.,1985, C31(3):896─909[4] Zhang Li et al.Phys Rev.,1994, C49(2):592─596 [5] Yuan Shuanggui et al.Z.Phys.,1995, A352(3):235─236 [6] Y Shnggui et al.Z. Phys,1993, A344:355─356 [7] Dai Guangxi et al. Chart of Nuclides (in Chinese),1987, 8─31(戴光曦等.核素图册,1987,8—31)[8] Firestone R B Nucl Deta Sheets,1988, 55(4):583─610 [9] Lu Xiting et al.Nuclear Physics.Beijng:Atom Energy Press(in Chinese),1981,28—31(卢希庭等.原子核物理,1981,28—31) [10] Staudt A et al.Atomic Deta and Nucl Deta Tables, 1990, 44(1):79—132

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He Jianjun, Yuan Shuanggui, Yang Weifan, Li Zongwei, Ma Taotao, Fang Keging, Shen Shuifa, Gan Zaiguo, Pan Qiangyan, Chen Zhantu, Guo Tianrui, Mou Wantong, Su Denggui, Xu Yanbing, Guo Junsheng, Liu Hongye, Shi Li Lijun, Zhao Zhizheng and Ma Huifang. A New Isotope of Hafnium: ¹⁸⁶Hf[J]. Chinese Physics C, 1998, 22(12): 1057-1060.

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Received: 1998-01-04
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

A New Isotope of Hafnium:¹⁸⁶Hf

Corresponding author:He Jianjun,

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000

Received Date:1998-01-04
Accepted Date:1900-01-01
Available Online:1998-12-05

Abstract:60MeV /u¹⁸O ion beam delivered by the Heavy Ion Research Facility in Lanzhou (HIRFL) bombarded the natural tungsten targets. The¹⁸⁶Hf was produced by multinucleon transfer reacions. The hafnium fraction was separated radiochemically from the mixture of tungsten and the reaction products. The γ activity was measured with a HPGe detector. The growth and decay of¹⁸⁶)Ta γ-rays has been observed, which indicates the (186)Hf as a parent of¹⁸⁶Ta were produced. The half-life of¹⁸⁶Hf has been determined to be (2.6±1.2)min.