GAS ION SOURCE PERFORMANCE of the ENVIRONMICADAS at HEKAL LABORATORY, DEBRECEN, HUNGARY

Mihály Molnár, Marianna Mészáros, Róbert Janovics, István Major, Katalin Hubay, Botond Buró, Tamás Varga, Titanilla Kertész, Virág Gergely, Ádám Vas, Gergely Orsovszki, Anita Molnár, Mihály Veres, Martin Seiler, Lukas Wacker, A. J. Timothy Jull

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

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 g 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 A with a 5% CO2 in He mixing ratio. The relative errors average ±6% for samples greater than or equal to 10 gC 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.

Original languageEnglish (US)
Pages (from-to)499-511
Number of pages13
JournalRadiocarbon
Volume63
Issue number2
DOIs
StatePublished - Apr 2021

Keywords

  • AMS
  • MICADAS
  • gas interface system
  • gas ion source
  • radiocarbon

ASJC Scopus subject areas

  • Archaeology
  • General Earth and Planetary Sciences

Fingerprint

Dive into the research topics of 'GAS ION SOURCE PERFORMANCE of the ENVIRONMICADAS at HEKAL LABORATORY, DEBRECEN, HUNGARY'. Together they form a unique fingerprint.

Cite this