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Title: Measurements of carbon-14 with cavity ring-down spectroscopy

Journal Article · · Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms
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  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Accelerator Mass Spectrometry (AMS) is the most sensitive method for quantitation of 14C in biological samples. This technology has been used in a variety of low dose, human health related studies over the last 20 years when very high sensitivity was needed. AMS helped pioneer these scientific methods, but its expensive facilities and requirements for highly trained technical staff have limited their proliferation. Quantification of 14C by cavity ring-down spectroscopy (CRDS) offers an approach that eliminates many of the shortcomings of an accelerator-based system and would supplement the use of AMS in biomedical research. Our initial prototype, using a non-ideal wavelength laser and under suboptimal experimental conditions, has a 3.5-modern, 1-σ precision for detection of milligram-sized, carbon-14-elevated samples. Furthermore, these results demonstrate proof of principle and provided a starting point for the development of a spectrometer capable of biologically relevant sensitivities.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1409931
Report Number(s):
LLNL-CONF-740906; PII: S0168583X15005315
Journal Information:
Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms, Vol. 361, Issue C; Conference: Presented at: Accelerator Mass Spectrometry 13, Aix en Provence (France), 14-20 Aug 2014; ISSN 0168-583X
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 16 works
Citation information provided by
Web of Science

References (9)

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Intracavity Optogalvanic Spectroscopy. An Analytical Technique for 14 C Analysis with Subattomole Sensitivity journal July 2008
Evaluation of Intracavity Optogalvanic Spectroscopy for Radiocarbon Measurements journal June 2013
The v 3 band of 14 C 16 O 2 molecule measured by optical-frequency-comb-assisted cavity ring-down spectroscopy journal September 2011
Molecular Gas Sensing Below Parts Per Trillion: Radiocarbon-Dioxide Optical Detection journal December 2011
The HITRAN 2008 molecular spectroscopic database journal June 2009
Model-based, closed-loop control of PZT creep for cavity ring-down spectroscopy journal July 2014
A b i n i t i o calculations of the spectral shapes of CO 2 isolated lines including non-Voigt effects and comparisons with experiments journal January 2013
The line shape problem in the near-infrared spectrum of self-colliding CO[sub 2] molecules: Experimental investigation and test of semiclassical models journal January 2009

Cited By (7)

Laser-based radiocarbon detection in the laboratory: How soon? journal August 2019
A cavity ring-down spectrometer for study of biomedical radiocarbon-labeled samples journal July 2018
Intracavity optogalvanic detection of 14 C using a stabilized 14 CO 2 laser journal September 2019
Spectroscopic detection of radiocarbon dioxide at parts-per-quadrillion sensitivity journal January 2016
Radiocarbon Tracers in Toxicology and Medicine: Recent Advances in Technology and Science journal May 2019
The HITRAN 2004 molecular spectroscopic database journal December 2005
The HITRAN2016 molecular spectroscopic database journal December 2017

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