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Performance Evaluation of the New AMS System at Accium BioSciences

Published online by Cambridge University Press:  18 July 2016

Ugo Zoppi ,
James Crye ,
Qi Song  and
Ali Arjomand
Ugo Zoppi*
Affiliation:
Accium BioSciences, Inc., 550 17th Avenue, Suite 550, Seattle, Washington 98122, USA
James Crye
Affiliation:
Accium BioSciences, Inc., 550 17th Avenue, Suite 550, Seattle, Washington 98122, USA
Qi Song
Affiliation:
Accium BioSciences, Inc., 550 17th Avenue, Suite 550, Seattle, Washington 98122, USA
Ali Arjomand
Affiliation:
Accium BioSciences, Inc., 550 17th Avenue, Suite 550, Seattle, Washington 98122, USA
*
Corresponding author. Email: [email protected]
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Abstract

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A new compact accelerator mass spectrometry (AMS) system dedicated to the measurement of radiocarbon has been commissioned at the Accium BioSciences headquarters in Seattle. The entire facility (including ancillary laboratories for the preparation of graphite targets) has been designed to handle samples with a wide range of 14C concentrations. In this paper, we discuss the technical details of the new facility and present performance test results demonstrating state-of-the-art capabilities. In particular, modern samples can be readily measured with 0.3% precision and accuracy, machine background levels are consistently in the low 10-16 (14C/12C), and chemical background is approximately equivalent to a fraction of modern of 0.004. In addition, when 100-times-modern samples were processed, no increase in background was observed, either during sample processing or during AMS measurement. This corresponds to a dynamic range for 14C analysis of 6 orders of magnitude.

Type
Technical Report
Information
Radiocarbon , Volume 49 , Issue 1 , 2007 , pp. 171 - 180
Copyright
Copyright © 2007 by the Arizona Board of Regents on behalf of the University of Arizona 

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