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arXiv · 1409.0633

A preliminary study of small-mass radiocarbon sample measurement at Xi'an-AMS

Fu Yun-Chong·Zhou Wei-Jian·Du Hua·Cheng Peng·Zhao Xiao-Lei·Liu Qi·Lu Xue-Feng·Zhao Wen-nian
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Abstract

To meet the measurement demands on small-mass radiocarbon (carbon content at 10-6g level) which are becoming increasingly significant. Xi'an-AMS has made improvement to the existing method of sample loading and has upgraded the Cs sputter ion source from the original SO-110 model. In order to study the feasibility of small-mass samples in Xi'an-AMS and evaluate the radiocarbon sample preparation ability using existing routine systems of H2/Fe and Zn/Fe, the small-mass samples prepared by four different methods are tested. They are mass division method, mass dilution method, H2/Fe reduction method and Zn/Fe reduction method. The results show that carbon mass above 25ug can be prepared using the existing Zn/Fe system, but no less than 100ug is required using the existing H2/Fe system, which can be improved. This indicates Xi'an-AMS are now able to analyze small-mass radiocarbon samples.

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Fu Yun-Chong, Zhou Wei-Jian, Du Hua, Cheng Peng, Zhao Xiao-Lei, Liu Qi, Lu Xue-Feng, Zhao Wen-nian. 2014-09-02. A preliminary study of small-mass radiocarbon sample measurement at Xi'an-AMS. https://arxiv.org/abs/1409.0633

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