AMS Measurement Technology for <sup>182</sup>Hf

LI Zhen-yu; JIANG Shan; HE Ming; DONG Ke-jun; HU Hao; ZHENG Guo-wen; LI Heng; WANG Xiao-bo; XIE Lin-bo; LIN De-yu; DOU Liang; WU Shao-yong; YOU Qu-bo; BAO Yi-wen

doi:10.7538/yzk.2013.47.02.0172

Atomic Energy Science and Technology > 2013 > 47(2): 172-177. > DOI: 10.7538/yzk.2013.47.02.0172

LI Zhen-yu, JIANG Shan, HE Ming, DONG Ke-jun, HU Hao, ZHENG Guo-wen, LI Heng, WANG Xiao-bo, XIE Lin-bo, LIN De-yu, DOU Liang, WU Shao-yong, YOU Qu-bo, BAO Yi-wen. AMS Measurement Technology for ¹⁸²Hf[J]. Atomic Energy Science and Technology, 2013, 47(2): 172-177. DOI: 10.7538/yzk.2013.47.02.0172

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AMS Measurement Technology for ¹⁸²Hf

1.
Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
2.
College of Physics Science and Technology, Guangxi University, Nanning 530004, China
3.
College of Ocean and Earth Sciences, Xiamen University, Xiamen 361005, China

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In order to improve the accuracy of AMS measurement for ¹⁸²Hf/¹⁸⁰Hf, a series of improvement and innovations of measurement technique and method were taken, such as chemical synthesis of ¹⁸²Hf free samples, technique of monitoring off-axis current simultaneously, testing the stability of accelerator system, performing the alternate measurement, modified deduction method of ¹⁸²W, testing the measurement method with simulated samples and real rock samples, and testing the reliability of measurement results. The experimental results show that the relative uncertainty is about 12% for the simulated samples to the order of 1×10^-10(¹⁸²Hf/¹⁸⁰Hf), which satisfies the requirement of measurements for real rock samples. The reason of big uncertainty with the rock sample mainly lies in the high content of W in the rock sample.
- ¹⁸²Hf,
- rock sample,
- AMS,
- nuclear environment engineering

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