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GAS ION SOURCE PERFORMANCE OF THE ENVIRONMICADAS AT HEKAL LABORATORY, DEBRECEN, HUNGARY

Published online by Cambridge University Press:  09 March 2021

Mihály Molnár Open the ORCID record for Mihály Molnár [Opens in a new window] ,
Marianna Mészáros ,
Róbert Janovics ,
István Major ,
Katalin Hubay ,
Botond Buró ,
Tamás Varga Open the ORCID record for Tamás Varga [Opens in a new window] ,
Titanilla Kertész Open the ORCID record for Titanilla Kertész [Opens in a new window] ,
Virág Gergely  and
Ádám Vas
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Mihály Molnár*
Affiliation:
Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Bem tér 18/C, Debrecen, H-4026, Hungary
Marianna Mészáros
Affiliation:
Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Bem tér 18/C, Debrecen, H-4026, Hungary
Róbert Janovics
Affiliation:
Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Bem tér 18/C, Debrecen, H-4026, Hungary
István Major
Affiliation:
Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Bem tér 18/C, Debrecen, H-4026, Hungary
Katalin Hubay
Affiliation:
Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Bem tér 18/C, Debrecen, H-4026, Hungary
Botond Buró
Affiliation:
Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Bem tér 18/C, Debrecen, H-4026, Hungary
Tamás Varga
Affiliation:
Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Bem tér 18/C, Debrecen, H-4026, Hungary University of Debrecen, Debrecen, H-4001, Hungary
Titanilla Kertész
Affiliation:
Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Bem tér 18/C, Debrecen, H-4026, Hungary University of Debrecen, Debrecen, H-4001, Hungary
Virág Gergely
Affiliation:
Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Bem tér 18/C, Debrecen, H-4026, Hungary University of Debrecen, Debrecen, H-4001, Hungary
Ádám Vas
Affiliation:
Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Bem tér 18/C, Debrecen, H-4026, Hungary University of Debrecen, Debrecen, H-4001, Hungary
Gergely Orsovszki
Affiliation:
Isotoptech Zrt., Debrecen, H-4026, Hungary
Anita Molnár
Affiliation:
Isotoptech Zrt., Debrecen, H-4026, Hungary University of Debrecen, Debrecen, H-4001, Hungary
Mihály Veres
Affiliation:
Isotoptech Zrt., Debrecen, H-4026, Hungary
Martin Seiler
Affiliation:
National Laboratory for Age Determination, NTNU, Trondheim, NO-7491, Norway
Lukas Wacker
Affiliation:
Laboratory for Ion Beam Physics, ETH Zürich, Zürich, CH-8093, Switzerland
A J Timothy Jull
Affiliation:
Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Bem tér 18/C, Debrecen, H-4026, Hungary University of Arizona AMS Laboratory, University of Arizona, Tucson, AZ85721USA University of Arizona, Department of Geosciences, Tucson, AZ85721USA
*
*Corresponding author. Email: molnar.mihaly@atomki.mta.hu.
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Abstract

A coupled accelerator mass spectrometer–gas interface system has been successfully operating at the Hertelendi Laboratory of Environmental Studies, Debrecen, Hungary, since 2013. Over the last 6 years more than 500 gas targets were measured below 100 µg carbon content for carbon isotopic composition. The system was tested with blanks, OxII, IAEA-C1, IAEA-C2, and IAEA-C7 standards. The performance of our instrumentation shows good agreement with other published gas-interface system data and also shows a quite good agreement with the nominal value of international standard samples. There is a measurable but quite small memory effect after modern samples, but this does not significantly affect the final results. Typical ion currents at the low energy side were between 10–15 µA with a 5% CO2 in He mixing ratio. The relative errors average ±6% for samples greater than or equal to 10 µgC sample with mean count rates of 300 counts per microgram C for OxII. The blank is comparable with other systems, which is 0.0050 ± 0.0018 F14C or 34,000–47,000 yr BP, which allows for the routine measurement of both of small environmental and archeological samples.

Keywords

AMSgas interface systemgas ion sourceMICADASradiocarbon
Type
Research Article
Information
Radiocarbon , Volume 63 , Issue 2 , April 2021 , pp. 499 - 511
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Copyright
© The Author(s), 2021. Published by Cambridge University Press for the Arizona Board of Regents on behalf of the University of Arizona

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References

REFERENCES

Fahrni, SM, Wacker, L, Synal, HA, Szidat, S. 2013. Improving a gas ion source for 14C AMS. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 294:320–327.CrossRefGoogle Scholar
Gottschalk, J, Szidat, S, Michel, E, Mazaud, A, Salazar, G, Battaglia, M, Lippold, J, Jaccard, SL. 2018. Radiocarbon measurements of small-size foraminiferal samples with the mini carbon dating system (MICADAS) at the University of Bern: implications for paleoclimate reconstructions. Radiocarbon 60(2):469–491.CrossRefGoogle Scholar
Hanke, UM, Wacker, L, Haghipour, N, Schmidt, MWI, Eglinton, TI, McIntyre, CP. 2017. Comprehensive radiocarbon analysis of benzene polycarboxylic acids (BPCAs) derived from pyrogenic carbon in environmental samples. Radiocarbon 59(4):1103–1116.CrossRefGoogle Scholar
Hoffmann, H, Friedrich, R, Kromer, B, Fahrni, S. 2017. Status report: Implementation of gas measurements at the MAMS 14C AMS facility in Mannheim, Germany, Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms. 410:184–187.CrossRefGoogle Scholar
Janovics, R, Futó, I, Molnár, M. 2018. Sealed tube combustion method with MnO2 for AMS 14C measurement. Radiocarbon 60(5):1347–1355.CrossRefGoogle Scholar
Le Clercq, M, van der Plicht, J. 1998. New 14C reference materials with activities of 15 and 50 pMC. Radiocarbon 40(1):295–297.CrossRefGoogle Scholar
Mann, WB. 1983. An international reference material for radiocarbon dating. Radiocarbon 25(2):519–527.CrossRefGoogle Scholar
Maruccio, L, Quarta, G, Braione, E, Calcagnile, L. 2017. Measuring stable carbon and nitrogen isotopes by IRMS and 14C by AMS on samples with masses in the microgram range: Performances of the system installed at CEDAD-University of Salento. International Journal of Mass Spectrometry 421:1–7.CrossRefGoogle Scholar
Molnár, M, Rinyu, L, Veres, M, Seiler, M, Wacker, L, Synal, HA. 2013a. EnvironMICADAS: a mini 14C AMS with enhanced gas ion source. Radiocarbon 55(2):338–344.CrossRefGoogle Scholar
Molnár, M, Janovics, R, Major, I, Orsovszki, J, Gönczi, R, Veres, M, Jull, A. 2013b. Status report of the new AMS 14C sample preparation lab of the Hertelendi Laboratory of Environmental Studies (Debrecen, Hungary). Radiocarbon 55(2):665–676.CrossRefGoogle Scholar
Rinyu, L, Orsovszki, G, Futó, I, Veres, M, Molnár, M. 2015. Application of zinc sealed tube graphitization on sub-milligram samples using EnvironMICADAS. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 361: 406–413.CrossRefGoogle Scholar
Rozanski, K. 1991. Consultant’s group meeting on 14C reference materials for radiocarbon laboratories. Internal report.Google Scholar
Stuiver, M. 1983. Business meeting: international agreements and the use of the new oxalic acid standard. Radiocarbon 25(2):793–795.CrossRefGoogle Scholar
Stuiver, M, Polach, H. 1977. Discussion of 14C data. Radiocarbon 19(3):355–363.CrossRefGoogle Scholar
Synal, HA, Stocker, M, Suter, M. 2007. MICADAS: A new compact radiocarbon AMS system. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 259(1):7–13.CrossRefGoogle Scholar
Szidat, S, Salazar, GA, Vogel, E, Battaglia, M, Wacker, L, Synal, HA, Türler, A. 2014. 14C analysis and sample preparation at the new Bern Laboratory for the Analysis of Radiocarbon with AMS (LARA). Radiocarbon 56(2):561–566.CrossRefGoogle Scholar
Tuna, T, Fagault, Y, Bonvalot, L, Capano, M, Bard, E. 2018. Development of small CO2 gas measurements with AixMICADAS. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 437:93–97.CrossRefGoogle Scholar
Wacker, L, Bonani, G, Friedrich, M, Hajdas, I, Kromer, B, Němec, M, Ruff, M, Suter, M, Synal, HA, Vockenhuber, C. 2010a. MICADAS: routine and high-precision radiocarbon dating. Radiocarbon 52(2):252–262.CrossRefGoogle Scholar
Wacker, L, Christl, M, Synal, HA. 2010b. Bats: a new tool for AMS data reduction. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 268(7–8):976–979.CrossRefGoogle Scholar
Welte, C, Hendriks, L, Wacker, L, Haghipour, N, Eglinton, TI, Günther, D, Synal, HA. 2018. Towards the limits: analysis of microscale 14C samples using EA-AMS. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 437:66–74.CrossRefGoogle Scholar