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Title: Spectroscopic quantification of extremely rare molecular species in the presence of interfering optical absorption

Optical spectrometer apparatus, systems, and methods for analysis of carbon-14 including a resonant optical cavity configured to accept a sample gas including carbon-14, an optical source configured to deliver optical radiation to the resonant optical cavity, an optical detector configured to detect optical radiation emitted from the resonant cavity and to provide a detector signal; and a processor configured to compute a carbon-14 concentration from the detector signal, wherein computing the carbon-14 concentration from the detector signal includes fitting a spectroscopic model to a measured spectrogram, wherein the spectroscopic model accounts for contributions from one or more interfering species that spectroscopically interfere with carbon-14.
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Issue Date:
OSTI Identifier:
Lawrence Livermore National Security, LLC LLNL
Patent Number(s):
Application Number:
Contract Number:
Resource Relation:
Patent File Date: 2015 May 18
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
Country of Publication:
United States

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  • DOI: 10.1007/BF00899738

A new accelerator mass spectrometry system for 14C-quantification of biochemical samples
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  • Ognibene, Ted J.; Bench, Graham; Brown, Tom A.
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  • Rothman, L. S.; Gordon, I. E.; Babikov, Y.
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journal, February 1995
  • Zalicki, Piotr; Zare, Richard N.
  • The Journal of Chemical Physics, Vol. 102, Issue 7, p. 2708-2717
  • DOI: 10.1063/1.468647

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