Radiocarbon positive-ion mass spectrometry

Freeman, S. P.H.T. , Shanks, R. P. , Donzel, X. and Gaubert, G. (2015) Radiocarbon positive-ion mass spectrometry. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 361, pp. 229-232. (doi:10.1016/j.nimb.2015.04.034)

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Abstract

Proof-of-principle of a new mass spectrometric technique for radiocarbon measurement is demonstrated. Interfering nitrogen and hydrocarbon molecules are largely eliminated in a charge-exchange cell operating on non-metallic gas. The positive-to-negative ion conversion is the reverse of that conventionally used in accelerator mass spectrometry (AMS) and is compatible with plasma ion sources that may be significantly more efficient and capable of greater output than are AMS sputter ion sources. The Nanogan electron cyclotron resonance (ECR) ion source employed exhibited no sample memory and the >50 kyrs age range of AMS was reproduced. A bespoke prototype new instrument is now required to optimise the plasma and cell physics and to realise hypothetical performance gains over AMS.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Shanks, Dr Richard and Freeman, Professor Stewart
Authors: Freeman, S. P.H.T., Shanks, R. P., Donzel, X., and Gaubert, G.
College/School:College of Science and Engineering > Scottish Universities Environmental Research Centre
Journal Name:Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Publisher:Elsevier B.V.
ISSN:0168-583X
ISSN (Online):1872-9584
Copyright Holders:Copyright © 2015 The Authors
First Published:First published in Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Publisher Policy:Reproduced under a Creative Commons License

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