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

Developments in accelerator mass spectrometry (AMS) method for¹⁸²Hf

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Abstract：
The present detection limit for¹⁸²Hf 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 of¹⁸²Hf mainly on building a new injector and using a method that based on solid-phase reaction for the preparation of HfF₄samples from HfO₂. The experimental results show that mass resolution of the injector can reached 630, and the F^－/O－ and beam current of¹⁸⁰HfF₅^－for HfF₄samples 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 for¹⁸²Hf

Corresponding author:TUO Fei,

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

Abstract:The present detection limit for¹⁸²Hf 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 of¹⁸²Hf mainly on building a new injector and using a method that based on solid-phase reaction for the preparation of HfF₄samples from HfO₂. The experimental results show that mass resolution of the injector can reached 630, and the F^－/O－ and beam current of¹⁸⁰HfF₅^－for HfF₄samples produced by dry method is about 2—3 times and 1.5 times of that by previously method, respectively.