Laser based 14C counting, an alternative to AMS in biological studies

D. E. Murnick, Ozgur Dogru, Erhan Ilkmen

Research output: Contribution to journalArticle

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Accelerator mass spectrometry (AMS) has been developed over the past 25 years as an effective method to count 14C atoms. An alternative 14C measurement technique, suitable for routine laboratory use, combining the optogalvanic effect with laser assisted isotope ratio analysis (LARA) is now being extended from its current use for precision analysis of 13CO2 to similar analysis of 14CO2. The analyzer uses a unique resonance between a specific molecular transition in the molecule 14CO2 and the narrow band output of a laser based on the same molecular transition. Isobaric background is not an issue as in AMS, and the sample is not consumed in analysis so that long averaging times with small samples is possible.

Original languageEnglish (US)
Pages (from-to)786-789
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Issue number1
Publication statusPublished - Jun 1 2007


All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation


  • Accelerator mass spectrometry
  • Carbon 14 tracers
  • Laser based isotope analysis

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