Cavity Ring Down
A gas chromatograph for quantification of peroxycarboxylic nitric anhydrides calibrated by thermal dissociation cavity ring-down spectroscopy
... by gas chromatography (PAN-GC) coupled to electron cap- ture detection. Calibration of a PAN-GC remains a chal- lenge, because the response factors differ for each of the PANs, and because their synthesis in sufficiently ...
21
Cavity ring-down UV spectroscopy of the C2Σ+-X2Π electronic transition of CH
... A pulsed high voltage discharge molecular source was used to create a planar, supersonically expanding plasma that proved to be a good source of rotationally and vibrationally highly excited CH radicals. The high ...
16
Frequency Stabilized Cavity Ring Down Spectroscopy of O₂ and CO₂ to Support Atmospheric Remote Sensing
... quantitative measurements (relative uncertainties in intensity measurements from 4.4% to 11%) of nine ultraweak transitions in the N O, P O, R S, and T S branches with line intensities ranging from 3×10 −30 to 2×10 −29 ...
167
High-Resolution Study of the O₂ A-Band using Frequency Stabilized Cavity Ring-Down Spectroscopy
... the cavity mode position (<500 kHz), which is itself dependent on the frequency stability of the reference laser (<100 kHz) instead of the probe laser linewidth (>1 ...the cavity is inherently ...
174
H 2S interference on CO2 isotopic measurements using a Picarro G1101-i cavity ring-down spectrometer
... Chen, H., Winderlich, J., Gerbig, C., Hoefer, A., Rella, C. W., Crosson, E. R., Van Pelt, A. D., Steinbach, J., Kolle, O., Beck, V., Daube, B. C., Gottlieb, E. W., Chow, V. Y., Santoni, G. W., and Wofsy, S. C.: ...
8
Evaluation of a cavity ring-down spectrometer for in situ observations of 13 CO 2
... The core of our setup consists of a commercially available cavity ring-down spectrometer (CRDS) (G1101-i + , Picarro, Santa Clara, USA). This instrument has a built-in wavelength monitor as well as ...
8
Simultaneous measurement of NO and NO2 by a dual-channel cavity ring-down spectroscopy technique
... 2004), cavity ring-down spec- troscopy (CRDS) (Castellanos et ...2016), cavity-enhanced absorption spectroscopy (CEAS) (Wu et ...2005), cavity-attenuated phase shift spec- troscopy ...
14
Cavity ring-down spectroscopy sensor development for high-time-resolution measurements of gaseous elemental mercury in ambient air
... 2.1 Cavity ring-down spectroscopy – overview of theory Pulsed cavity ring-down spectroscopy is an absorption tech- nique that uses high-reflectivity mirrors positioned at both ...
13
Negligible influence of livestock contaminants and sampling system on ammonia measurements with cavity ring-down spectroscopy
... of cavity ring-down spectroscopy (CRDS) from Picarro, as an alterna- tive to PAS, has been tested with respect to method valida- tion under laboratory and field ...
14
Comprehensive laboratory and field testing of cavity ring-down spectroscopy analyzers measuring H 2O, CO2 , CH 4and CO
... Abstract. To develop an accurate measurement network of greenhouse gases, instruments in the field need to be sta- ble and precise and thus require infrequent calibrations and a low consumption of consumables. For about ...
26
Quantification of peroxynitric acid and peroxyacyl nitrates using an ethane-based thermal dissociation peroxy radical chemical amplification cavity ring-down spectrometer
... by cavity ring-down spectroscopy in the ambient temper- ature (NO 2 ; green) and heated (NO 2 + 6PAN; purple) channels with the PERCA heater ...
19
Cavity ring-down spectroscopy sensor for detection of hydrogen chloride
... continuous-wave cavity ring-down spectroscopy (cw-CRDS) is employed to achieve path lengths significantly longer than those from conventional multi-pass ...
13
Calibrated high-precision 17 O-excess measurements using cavity ring-down spectroscopy with laser-current-tuned cavity resonance
... new cavity ring-down laser absorption spectrometer that provides both high-precision and high-relative-accuracy measurements of 1 17 ...optical cavity of the instrument, data averaging over ...
15
Diode laser-based cavity ring-down instrument for NO 3,N2O5 , NO, NO 2and O3 from aircraft
... based on cavity ring-down spectroscopy using a pulsed dye laser and a Nd:YAG laser to pump the dye laser. Diode lasers, which are available at wavelengths near the 662 nm absorp- tion maximum of the ...
14
Development and application of evanescent wave cavity ring down spectroscopy as a probe of biologically relevant interfaces
... the ring-down time from each transient was calculated with the fast Fourier transform method 1 using custom- written LabVIEW ...Typical ring-down times were between 50 ns and 800 ns. A typical ...
212
High-precision measurements of nitrous oxide and methane in air with cavity ring-down spectroscopy at 7.6 µm
... ity ring-down spectroscopy (CRDS) (Banik et ...integrated cavity output spectroscopy (ICOS) (O’Keefe, 1998), and noise immune cavity enhanced optical hetero- dyne molecular spectroscopy ...
11
Accurate measurements of carbon monoxide in humid air using the cavity ring-down spectroscopy (CRDS) technique
... that will be observed. This study applies to the CRDS in- struments manufactured by Picarro Inc. that determine the CO mole fractions of air sample in a pressure- ( ∼ 186 mbar) and temperature- ( ∼ 45 ◦ C) controlled ...
10
A cavity ring down/cavity enhanced absorption device for measurement of ambient NO
... as ring down profiles are measured over very short timescales (200 µs) and the analysis does not consider the first few µs in which light of inappropriate wavelengths is rejected from the ...the ...
13
A five-channel cavity ring-down spectrometer for the detection of NO 2, NO3 ,N 2O5 , total peroxy nitrates and total alkyl nitrates
... ference. The cavity mirrors (Advanced Thin Films, 1 in. di- ameter, 1 m radius of curvature) have a nominal reflectivity of 0.999985 and result in ring-down times (at atmospheric pres- sure of dry ...
16
High-accuracy continuous airborne measurements of greenhouse gases (CO 2and CH4 ) using the cavity ring-down spectroscopy (CRDS) technique
... the cavity pressure for sev- eral short periods during BARCA ...the cavity pressure for short periods have diminished to an insignificant level during later ...
12