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On the Prospects of AMS 14C with Real-Time Sample Preparation and Separation

Published online by Cambridge University Press:  18 July 2016

Henrik Kjeldsen ,
Jessica Churchman ,
Philip Leach  and
Christopher Bronk Ramsey
Henrik Kjeldsen*
Affiliation:
AMS 14C Dating Centre, Department of Physics and Astronomy, University of Aarhus, 8000 Aarhus C, Denmark
Jessica Churchman
Affiliation:
University of Oxford, Research Laboratory for Archaeology and the History of Art, Dyson Perrins Building, South Parks Road, Oxford, OX1 3QY, United Kingdom
Philip Leach
Affiliation:
University of Oxford, Research Laboratory for Archaeology and the History of Art, Dyson Perrins Building, South Parks Road, Oxford, OX1 3QY, United Kingdom
Christopher Bronk Ramsey
Affiliation:
University of Oxford, Research Laboratory for Archaeology and the History of Art, Dyson Perrins Building, South Parks Road, Oxford, OX1 3QY, United Kingdom
*
Corresponding author. Email: [email protected]
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Abstract

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The performance of the CO2-accepting SO-110 ion source at Oxford Radiocarbon Accelerator Unit has been investigated in detail. The purpose was to clarify the possibilities of accelerator mass spectrometry (AMS) radiocarbon measurements with real-time separation, e.g. GC AMS or HPLC AMS. The construction of a gas test injector based on the continuous-flow technique made it possible to characterize the response of the ion source to continuous and pulsed input of CO2 gas. The source exhibited remarkably good linearity over a wide range of CO2-pulse sizes and fast rise time, but the peak shape varied and memory effects were significant. Appropriate tuning of the gas source proved to be critical.

Type
Articles
Information
Radiocarbon , Volume 50 , Issue 2 , 2008 , pp. 267 - 274
Copyright
Copyright © 2008 by the Arizona Board of Regents on behalf of the University of Arizona 

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