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1 Bern Workshop on C analyses with MICADAS (Department of Chemistry and Biochemistry, University of Bern) 13.-15.09.2017
ABSTRACT BOOKLET
Technical developments and improvements of radiocarbon analyses (Session chair: Sönke Szidat)
Keynote: Challenges in Radiocarbon analysis: Small samples and accurate dating Lukas Wacker 1
Lukas Wacker
[email protected] 1 Hans-Arno Synal 1. Laboratory of Ion Beam Physics, ETH Zurich, Switzerland Accelerator Mass Spectrometry (AMS) is mostly used to determine 14C/12C ratios for radiocarbon dating, because it allows determining efficiently 14C without isobaric or molecular background of relatively small samples. While for many years these measurements were performed on large tandem accelerators at energies of 3 – 6 MV, this has changed over the last 15 years. Radiocarbon measurements are now preferably carried out on compact AMS systems at energies 1 mg CaCO3) obtained with conventional accelerator mass spectrometry (AMS) with those of small foraminifer samples (
