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14C MICROSAMPLE ANALYSIS WITH ECHoMICADAS FACILITIES: CURRENT STATE OF PLAY

Published online by Cambridge University Press:  20 September 2024

François Thil Open the ORCID record for François Thil [Opens in a new window] ,
Nadine Tisnérat-Laborde ,
Christine Hatté Open the ORCID record for Christine Hatté [Opens in a new window] ,
Elias Kader ,
Claude Noury ,
Martine Paterne ,
Brian Phouybanhdyt  and
Lukas Wacker Open the ORCID record for Lukas Wacker [Opens in a new window]
François Thil*
Affiliation:
Laboratoire des Sciences du Climat et de l’Environnement, IPSL/LSCE, CEA CNRS UVSQ, Université Paris-Saclay, F-91191, Gif Sur Yvette, France
Nadine Tisnérat-Laborde
Affiliation:
Laboratoire des Sciences du Climat et de l’Environnement, IPSL/LSCE, CEA CNRS UVSQ, Université Paris-Saclay, F-91191, Gif Sur Yvette, France
Christine Hatté
Affiliation:
Laboratoire des Sciences du Climat et de l’Environnement, IPSL/LSCE, CEA CNRS UVSQ, Université Paris-Saclay, F-91191, Gif Sur Yvette, France Division of Geochronology and Environmental Sciences, Institute of Physics, Silesian University of Technology, 44-100 Gliwice, Poland
Elias Kader
Affiliation:
Laboratoire des Sciences du Climat et de l’Environnement, IPSL/LSCE, CEA CNRS UVSQ, Université Paris-Saclay, F-91191, Gif Sur Yvette, France
Claude Noury
Affiliation:
Laboratoire des Sciences du Climat et de l’Environnement, IPSL/LSCE, CEA CNRS UVSQ, Université Paris-Saclay, F-91191, Gif Sur Yvette, France
Martine Paterne
Affiliation:
Laboratoire des Sciences du Climat et de l’Environnement, IPSL/LSCE, CEA CNRS UVSQ, Université Paris-Saclay, F-91191, Gif Sur Yvette, France
Brian Phouybanhdyt
Affiliation:
Laboratoire des Sciences du Climat et de l’Environnement, IPSL/LSCE, CEA CNRS UVSQ, Université Paris-Saclay, F-91191, Gif Sur Yvette, France
Lukas Wacker
Affiliation:
Ion Beam Physics, Department of Physics, ETH Zürich, HPK H29, Otto-Stern-Weg 5, 8093 Zürich, Switzerland
*
*Corresponding author. Email: francois.thil@lsce.ipsl.fr
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Abstract

In 2015, a new accelerator mass spectrometry facility (AMS), the ECHoMICADAS (Environnement, Climat, Homme, MIni CArbon DAting System), was installed in the Laboratoire des Sciences du Climat et de l’Environnement (LSCE). Equipped with a hybrid source, it allows the analysis of solid or gas samples for 14C measurement. Here, we summarize the equipment surrounding the Gas Interface System (GIS), namely the elemental analyzer (EA), the carbonate handling system (CHS2) and the ampoule cracker. We describe our model of sample contamination, taking into account the cross and the constant contaminations, and then describe how these contaminations were handled in the data processing. Both contaminant corrections are applied before the phases of blank subtraction and standard normalization, making it possible to use the standard, blank and sample ratios without contaminant during these phases. We finally present our results on normalization standards (N=118), blanks (N=125) and reference materials (N=117) for different measurement protocols and for sample masses between 3 and 300 µgC.

Keywords

14C datingcarbonate handling systemcontaminant correctionelemental analyzergas interface system

Information

Type
Conference Paper
Information
Radiocarbon , Volume 66 , Issue 5: 24th Radiocarbon and 10th 14C & Archaeology, Zurich, Sept. 11–16, 2022 Proceedings Part 1 of 2 , October 2024 , pp. 1379 - 1394
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Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of University of Arizona

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Footnotes

Selected Papers from the 24th Radiocarbon and 10th Radiocarbon & Archaeology International Conferences, Zurich, Switzerland, 11–16 Sept. 2022

References

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