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

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FU Yun-Chong, ZHOU Wei-Jian, DU Hua, CHENG Peng, ZHAO Xiao-Lei, LIU Qi, LU Xue-Feng and ZHAO Wen-Nian. A preliminary study of small-mass radiocarbon sample measurement at Xi'an-AMS[J]. Chinese Physics C, 2015, 39(3): 036202. doi: 10.1088/1674-1137/39/3/036202
FU Yun-Chong, ZHOU Wei-Jian, DU Hua, CHENG Peng, ZHAO Xiao-Lei, LIU Qi, LU Xue-Feng and ZHAO Wen-Nian. A preliminary study of small-mass radiocarbon sample measurement at Xi'an-AMS[J]. Chinese Physics C, 2015, 39(3): 036202.  doi: 10.1088/1674-1137/39/3/036202 shu
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Received: 2014-05-26
Revised: 1900-01-01
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A preliminary study of small-mass radiocarbon sample measurement at Xi'an-AMS

    Corresponding author: FU Yun-Chong,

Abstract: To meet the measurement demands on small-mass radiocarbon (carbon content at 10-6 g level) which are becoming increasingly significant, Xi'an-AMS has made improvements 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 the mass division method, mass dilution method, H2/Fe reduction method and Zn/Fe reduction method. The results show that carbon mass above 25 μg can be prepared using the existing Zn/Fe system, but no less than 100 μg 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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