HIGH PRECISION LINE PARAMETERS OF N2O NEAR 1.5μm BY CAVITY RING-DOWN SPECTROSCOPY

2018 ◽  
Author(s):  
Gu-Liang Liu ◽  
An-Wen Liu ◽  
Shui-Ming Hu ◽  
Tian-Peng Hua ◽  
Peng Kang
Keyword(s):  
High Precision ◽  
Cavity Ring Down Spectroscopy ◽  
Cavity Ring Down

High-precision pressure shifting measurement technique using frequency-stabilized cavity ring-down spectroscopy

2008 ◽  
Vol 109 (3) ◽  
pp. 435-444 ◽  
Author(s):  
David J. Robichaud ◽  
Joseph T. Hodges ◽  
Daniel Lisak ◽  
Charles E. Miller ◽  
Mitchio Okumura
Keyword(s):  
High Precision ◽  
Measurement Technique ◽  
Cavity Ring Down Spectroscopy ◽  
Cavity Ring Down

scholarly journals Calibrated high-precision <sup>17</sup>O<sub>excess</sub> measurements using laser-current tuned cavity ring-down spectroscopy

2013 ◽  
Vol 6 (6) ◽  
pp. 10191-10229 ◽  
Author(s):  
E. J. Steig ◽  
V. Gkinis ◽  
A. J. Schauer ◽  
S. W. Schoenemann ◽  
K. Samek ◽  
...  
Keyword(s):  
Water Vapor ◽  
High Precision ◽  
Isotope Ratio ◽  
Isotope Ratio Mass Spectrometry ◽  
Specific Interest ◽  
Cavity Ring Down Spectroscopy ◽  
New Instrument ◽  
Current Tuning ◽  
Better Than ◽  
Cavity Ring Down

Abstract. High precision analysis of the 17O/16O isotope ratio in water and water vapor is of interest in hydrological, paleoclimate, and atmospheric science applications. Of specific interest is the parameter 17Oexcess, a measure of the deviation from a linear relationship between 17O/16O and 18O/16O ratios. Conventional analyses of 17Oexcess are obtained by fluorination of H2O to O2 that is analyzed by dual-inlet isotope ratio mass spectrometry (IRMS). We describe a new laser spectroscopy instrument for high-precision 17Oexcess measurements. The new instrument uses cavity ring-down spectroscopy (CRDS) with laser-current tuning to achieve reduced measurement drift compared with previous-generation instruments. Liquid water and water vapor samples can be analyzed with better than 8 per meg precision for 17Oexcess using integration times of less than 30 min. Calibration with respect to accepted water standards demonstrates that both the precision and the accuracy are competitive with conventional IRMS methods. The new instrument also achieves simultaneous measurements of δ18O, 17Oand δD with precision < 0.03‰, < 0.02‰ and < 0.2‰, respectively.

High Precision Cavity Ring Down Spectroscopy of 6ν3 Overtone Band of 14N216O near 775 nm

2017 ◽  
Vol 30 (5) ◽  
pp. 487-492 ◽  
Author(s):  
Xiao-qin Zhao ◽  
Jin Wang ◽  
An-wen Liu ◽  
Ze-yi Zhou ◽  
Shui-ming Hu
Keyword(s):  
High Precision ◽  
Cavity Ring Down Spectroscopy ◽  
Overtone Band ◽  
Cavity Ring Down

scholarly journals Calibrated high-precision <sup>17</sup>O-excess measurements using cavity ring-down spectroscopy with laser-current-tuned cavity resonance

2014 ◽  
Vol 7 (8) ◽  
pp. 2421-2435 ◽  
Author(s):  
E. J. Steig ◽  
V. Gkinis ◽  
A. J. Schauer ◽  
S. W. Schoenemann ◽  
K. Samek ◽  
...  
Keyword(s):  
Water Vapor ◽  
High Precision ◽  
Isotope Ratio ◽  
Isotope Ratio Mass Spectrometry ◽  
Cavity Resonance ◽  
Specific Interest ◽  
Cavity Ring Down Spectroscopy ◽  
New Instrument ◽  
Better Than ◽  
Cavity Ring Down

Abstract. High-precision analysis of the 17O / 16O isotope ratio in water and water vapor is of interest in hydrological, paleoclimate, and atmospheric science applications. Of specific interest is the parameter 17O excess (Δ17O), a measure of the deviation from a~linear relationship between 17O / 16O and 18O / 16O ratios. Conventional analyses of Δ17O of water are obtained by fluorination of H2O to O2 that is analyzed by dual-inlet isotope ratio mass spectrometry (IRMS). We describe a new laser spectroscopy instrument for high-precision Δ17O measurements. The new instrument uses cavity ring-down spectroscopy (CRDS) with laser-current-tuned cavity resonance to achieve reduced measurement drift compared with previous-generation instruments. Liquid water and water-vapor samples can be analyzed with a better than 8 per meg precision for Δ17O using integration times of less than 30 min. Calibration with respect to accepted water standards demonstrates that both the precision and the accuracy of Δ17O are competitive with conventional IRMS methods. The new instrument also achieves simultaneous analysis of δ18O, Δ17O and δD with precision of < 0.03‰, < 0.02 and < 0.2‰, respectively, based on repeated calibrated measurements.

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