On the Prospects of AMS 14C with Real-Time Sample Preparation and Separation
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CitationKjeldsen, H., Churchman, J., Leach, P., & Bronk Ramsey, C. (2008). On the prospects of AMS 14C with real-time sample preparation and separation. Radiocarbon, 50(2), 267-274.
AbstractThe performance of the CO2-accepting SO-110 ion source at Oxford Radiocarbon Accelerator Unit has been investigated in detail. The purpose was to clarify the possibilities of accelerator mass spectrometry (AMS) radiocarbon measurements with real-time separation, e.g. GC AMS or HPLC AMS. The construction of a gas test injector based on the continuous-flow technique made it possible to characterize the response of the ion source to continuous and pulsed input of CO2 gas. The source exhibited remarkably good linearity over a wide range of CO2-pulse sizes and fast rise time, but the peak shape varied and memory effects were significant. Appropriate tuning of the gas source proved to be critical.