Preparation of <SUP>182</SUP>Hf AMS Standard Sample and Test on HI-13 Tandem AMS

YIN Xin-Yi; HE Ming; DONG Ke-Jun; QIU Jiu-Zi; WU Shao-Yong; ZHANG Jin-Song; ZHANG Chun-Hua; ZHENG Yun; GUAN Yong-Jing; JIANG Shan

Chinese Physics C> 2007, Vol. 31> Issue(10) : 978-981

Preparation of ¹⁸²Hf AMS Standard Sample and Test on HI-13 Tandem AMS

Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China2 Nuclear Power Institute of China, Sichuan, Jiajiang 610005, China

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The preparation and accelerator mass spectrometry (AMS) measurements of a series of ¹⁸²Hf AMS calibration standards are described in this paper. The preparation consists of five processes, the synthesis of the initial ¹⁸²Hf/¹⁸⁰Hf standard sample by double neutron capture reaction of ¹⁸⁰Hf, the accurate measurement of this standard for isotopic ratio with thermal ionization mass spectrometry (TIMS), the chemical separation of isobaric interference ¹⁸²W, the sequential dilution of the initial standard, and the preparation of HfF₄. The value of ¹⁸²Hf/¹⁸⁰Hf in the initial ¹⁸²Hf/¹⁸⁰Hf standard was obtained with TIMS to be (1.63±0.01)×10^－6. Chemical separation and purification procedures were developed and applied in the preparation of all ¹⁸²Hf/¹⁸⁰Hf standards for the removal of major isobaric interference nuclide ¹⁸²W. As a result, three ¹⁸²Hf AMS standards with ¹⁸²Hf/¹⁸⁰Hf ratios of (1.63±0.01)×10^－6, (3.22±0.26)×10^－8, (3.45±0.32)×10^－10 were obtained. AMS measurements of these standard samples were performed and good linearity was obtained in a plot of AMS results vs nominal values for ¹⁸²Hf/¹⁸⁰Hf ranging from 1.63×10^－6 to 3.45×10^－10.

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YIN Xin-Yi, HE Ming, DONG Ke-Jun, QIU Jiu-Zi, WU Shao-Yong, ZHANG Jin-Song, ZHANG Chun-Hua, ZHENG Yun, GUAN Yong-Jing and JIANG Shan. Preparation of ¹⁸²Hf AMS Standard Sample and Test on HI-13 Tandem AMS[J]. Chinese Physics C, 2007, 31(10): 978-981.

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Received: 2006-11-28
Revised: 2007-03-19

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沈阳化工大学材料科学与工程学院沈阳 110142

Preparation of ¹⁸²Hf AMS Standard Sample and Test on HI-13 Tandem AMS

Corresponding author: YIN Xin-Yi,

Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China2 Nuclear Power Institute of China, Sichuan, Jiajiang 610005, China

Received Date: 2006-11-28

Accepted Date: 2007-03-19

Available Online: 2007-10-05

Abstract: The preparation and accelerator mass spectrometry (AMS) measurements of a series of ¹⁸²Hf AMS calibration standards are described in this paper. The preparation consists of five processes, the synthesis of the initial ¹⁸²Hf/¹⁸⁰Hf standard sample by double neutron capture reaction of ¹⁸⁰Hf, the accurate measurement of this standard for isotopic ratio with thermal ionization mass spectrometry (TIMS), the chemical separation of isobaric interference ¹⁸²W, the sequential dilution of the initial standard, and the preparation of HfF₄. The value of ¹⁸²Hf/¹⁸⁰Hf in the initial ¹⁸²Hf/¹⁸⁰Hf standard was obtained with TIMS to be (1.63±0.01)×10^－6. Chemical separation and purification procedures were developed and applied in the preparation of all ¹⁸²Hf/¹⁸⁰Hf standards for the removal of major isobaric interference nuclide ¹⁸²W. As a result, three ¹⁸²Hf AMS standards with ¹⁸²Hf/¹⁸⁰Hf ratios of (1.63±0.01)×10^－6, (3.22±0.26)×10^－8, (3.45±0.32)×10^－10 were obtained. AMS measurements of these standard samples were performed and good linearity was obtained in a plot of AMS results vs nominal values for ¹⁸²Hf/¹⁸⁰Hf ranging from 1.63×10^－6 to 3.45×10^－10.

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Preparation of 182Hf AMS Standard Sample and Test on HI-13 Tandem AMS

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Preparation of ¹⁸²Hf AMS Standard Sample and Test on HI-13 Tandem AMS

Preparation of ¹⁸²Hf AMS Standard Sample and Test on HI-13 Tandem AMS