Developments in accelerator mass spectrometry (AMS) method for <SUP>182</SUP>Hf

TUO Fei; HE Ming; SHEN Hong-Tao; WU Shao-Yong; HU Yue-Ming; BAO Yi-Wen; OUYANG Ying-Gen; YOU Qu-Bo; DOU Yu-Ling; JIANG Shan

Chinese Physics C> 2008, Vol. 32> Issue(S2) : 201-204

Developments in accelerator mass spectrometry (AMS) method for ¹⁸²Hf

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The present detection limit for ¹⁸²Hf at CIAE HI-13 AMS systems could not satisfy various applications (e. g. detection of a nearby supernovae signal). Therefore, techniques were developed in this work to improve the AMS measurement of ¹⁸²Hf mainly on building a new injector and using a method that based on solid-phase reaction for the preparation of HfF₄ samples from HfO₂. The experimental results show that mass resolution of the injector can reached 630, and the F^－/O－ and beam current of ¹⁸⁰HfF₅^－ for HfF₄ samples produced by dry method is about 2—3 times and 1.5 times of that by previously method, respectively.

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TUO Fei, HE Ming, SHEN Hong-Tao, WU Shao-Yong, HU Yue-Ming, BAO Yi-Wen, OUYANG Ying-Gen, YOU Qu-Bo, DOU Yu-Ling and JIANG Shan. Developments in accelerator mass spectrometry (AMS) method for ¹⁸²Hf[J]. Chinese Physics C, 2008, 32(S2): 201-204.

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Received: 2008-07-17
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

Developments in accelerator mass spectrometry (AMS) method for ¹⁸²Hf

Corresponding author: TUO Fei,

Received Date: 2008-07-17
Accepted Date: 1900-01-01
Available Online: 2008-01-03

Abstract: The present detection limit for ¹⁸²Hf at CIAE HI-13 AMS systems could not satisfy various applications (e. g. detection of a nearby supernovae signal). Therefore, techniques were developed in this work to improve the AMS measurement of ¹⁸²Hf mainly on building a new injector and using a method that based on solid-phase reaction for the preparation of HfF₄ samples from HfO₂. The experimental results show that mass resolution of the injector can reached 630, and the F^－/O－ and beam current of ¹⁸⁰HfF₅^－ for HfF₄ samples produced by dry method is about 2—3 times and 1.5 times of that by previously method, respectively.