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High-Current 14C Measurements on an HVE 1MV AMS System

Published online by Cambridge University Press:  09 February 2016

Matthias Klein ,
A Gottdang  and
D J W Mous
Matthias Klein
Affiliation:
High Voltage Engineering Europa B.V., PO Box 99, 3800 AB Amersfoort, the Netherlands. Email: info@highvolteng.com
A Gottdang
Affiliation:
High Voltage Engineering Europa B.V., PO Box 99, 3800 AB Amersfoort, the Netherlands. Email: info@highvolteng.com
D J W Mous
Affiliation:
High Voltage Engineering Europa B.V., PO Box 99, 3800 AB Amersfoort, the Netherlands. Email: info@highvolteng.com
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Abstract

High radiocarbon sample throughput is an increasingly important requirement of accelerator mass spectrometry (AMS) systems, which in turn requires high source output. To accomplish this, HVE AMS systems use a model SO-110B ion source, which can run at outputs of more than 200 μA 12C. It is known that high source output may compromise precision. To quantify this effect, we have tested an HVE 1MV AMS system for the influence of medium (100 μA) and high (200 μA) source outputs on the precision. These early measurements indicate for a 200 μA 12C source output, equivalent to a ≃1 kHz 14C count rate for Ox II samples, a 13C/12C precision of 1% and a 14C/12C precision of 3% can be obtained.

Type
Articles
Information
Radiocarbon , Volume 55 , Issue 2: Proceedings of the 21st International Radiocarbon Conference (Part 1 of 2) , 2013 , pp. 224 - 230
Copyright
Copyright © 2013 by the Arizona Board of Regents on behalf of the University of Arizona 

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