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The Keck Carbon Cycle AMS Laboratory, University of California, Irvine: Initial Operation and a Background Surprise

Published online by Cambridge University Press:  18 July 2016

John Southon ,
Guaciara Santos ,
Kevin Druffel-Rodriguez ,
Ellen Druffel ,
Sue Trumbore ,
Xiaomei Xu ,
Sheila Griffin ,
Shahla Ali  and
Maya Mazon
John Southon
Affiliation:
Earth System Science Department, University of California, Irvine, California 92612, USA.
Guaciara Santos
Affiliation:
Earth System Science Department, University of California, Irvine, California 92612, USA.
Kevin Druffel-Rodriguez
Affiliation:
Earth System Science Department, University of California, Irvine, California 92612, USA. Department of Chemistry, Loyola Marymount University, Seaver Hall, Los Angeles, California, USA.
Ellen Druffel
Affiliation:
Earth System Science Department, University of California, Irvine, California 92612, USA.
Sue Trumbore
Affiliation:
Earth System Science Department, University of California, Irvine, California 92612, USA.
Xiaomei Xu
Affiliation:
Earth System Science Department, University of California, Irvine, California 92612, USA.
Sheila Griffin
Affiliation:
Earth System Science Department, University of California, Irvine, California 92612, USA.
Shahla Ali
Affiliation:
Earth System Science Department, University of California, Irvine, California 92612, USA. Lamont-Doherty Earth Observatory, Columbia University, Palisades, New York, USA.
Maya Mazon
Affiliation:
Earth System Science Department, University of California, Irvine, California 92612, USA. Department of Biology, California State University, Fullerton, California, USA.
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Abstract

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A new radiocarbon accelerator mass spectrometry (AMS) laboratory for carbon cycle studies has been established at the University of California, Irvine. The 0.5MV AMS system was installed in mid-2002 and has operated routinely since October of that year. This paper briefly describes the spectrometer and summarizes lessons learned during the first year of operation. In the process of setting up the system, we identified and largely suppressed a previously unreported 14C AMS background: charge exchange tails from 14N beams derived from nitrogen-containing molecular ions produced near the entrance of the accelerator.

Type
Articles
Information
Radiocarbon , Volume 46 , Issue 1: Proceedings of the 18th International Radiocarbon Conference (Part 1 of 2), Conference Editors: Nancy Beavan Athfield, Rodger J Sparks , 2004 , pp. 41 - 49
Copyright
Copyright © 2004 by the Arizona Board of Regents on behalf of the University of Arizona 

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