Capabilities of the new suerc 5MV AMS facility for C-14 dating

Xu, S., Anderson, R., Bryant, C., Cook, G.T. , Dougans, A., Freeman, S. , Naysmith, P. , Schnabel, C. and Scott, E.M. (2004) Capabilities of the new suerc 5MV AMS facility for C-14 dating. Radiocarbon, 46(1), pp. 59-64. (doi: 10.1017/S0033822200039357)

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Abstract

A new National Electrostatic Corporation (NEC) 5MV accelerator mass spectrometer became operational at the Scottish Universities Environmental Research Centre (SUERC) in July 2002. It has 2 Cs sputter negative ion sources: a 134-sample source (S1) for the routine measurement of all species, and a hybrid source (S2) with 40 spaces for radiocarbon measurements with either graphite or CO2 samples. A number of performance tests on graphite samples have been carried out on both sources. A precison of better than 0.3% is feasible for modern samples on a routine basis. The 14C background of the machine and the graphite preparation process blank are 0.04 ± 0.01 and 0.16 ± 0.05 pMC, respectively, indicating that 14C dating back to ~50 kyr BP is possible. The normalized 14C values for a series of reference materials agree well with the IAEA, TIRI, and FIRI consensus values. Routine measurement of 14C has been underway since May 2003. Preliminary results of performance tests on the CO2 gas ion source are also reported.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Schnabel, Dr Christoph and Dougans, Mr Andrew and Cook, Professor Gordon and Scott, Professor Marian and Naysmith, Mr Philip and Bryant, Dr Charlotte and Xu, Dr Sheng and Freeman, Professor Stewart and Anderson, Mr Robert
Authors: Xu, S., Anderson, R., Bryant, C., Cook, G.T., Dougans, A., Freeman, S., Naysmith, P., Schnabel, C., and Scott, E.M.
College/School:College of Science and Engineering > Scottish Universities Environmental Research Centre
College of Science and Engineering > School of Mathematics and Statistics > Statistics
Journal Name:Radiocarbon
Publisher:University of Arizona
ISSN:0033-8222
ISSN (Online):1945-5755

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