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Memory Effects in an AMS System: Catastrophe and Recovery

Published online by Cambridge University Press:  18 July 2016

J S Vogel ,
J R Southon  and
D E Nelson
J S Vogel
Affiliation:
Department of Archaeology, Simon Fraser University, Burnaby, BC V5A 1S6 Canada
J R Southon
Affiliation:
Department of Archaeology, Simon Fraser University, Burnaby, BC V5A 1S6 Canada
D E Nelson
Affiliation:
Department of Archaeology, Simon Fraser University, Burnaby, BC V5A 1S6 Canada
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Abstract

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A sample with a 14C concentration estimated to be greater than 30,000 Modern was inadvertently graphitized and measured in an AMS system. No measurable contamination of the cesium sputter ion source was observed. Simple cleaning procedures removed the contamination from the sample preparation system, with the exception of the reaction vessel in which the sample was graphitized. Sample cross-contamination factors were estimated for all of the preparation and measurement procedures.

Information

Type
Articles
Information
Radiocarbon , Volume 32 , Issue 1 , 1990 , pp. 81 - 83
Copyright
Copyright © 1990 The American Journal of Science 

References

Slota, PJ Jr and Taylor, RE 1986 AMS 14C analysis of samples from archaeological contexts: pretreatment and target preparation. University of California AMS conf Proc. Livermore, Inst Geophysics Planetary Physics.Google Scholar
Vogel, JS, Nelson, DE and Southon, JR 1987 14C background levels in an accelerator mass spectrometry system. Radiocarbon 29 (3): 323–333.CrossRefGoogle Scholar
Vogel, JS, Southon, JR and Nelson, DE 1987 Catalyst and binder effects in the use of filamentous graphite for AMS. Nuclear Instruments & Methods B29: 50–56.Google Scholar