Evanescent wave-cavity ring-down spectroscopy
Development and application of evanescent wave cavity ring down spectroscopy as a probe of biologically relevant interfaces
... folded cavity arrangement by Simon Neil in Oxford did not determine any preferred orientation for surface adsorbed porphyrin molecules under similar conditions to those used here (see Section ...
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Development and application of evanescent wave cavity ring down spectroscopy for studies of electrochemical and interfacial processes
... increased up to 606 Hz, which opens up the possibility to study fast interfacial kinetics such as dissolution, polymerisation and crystal growth. The advantages of EW-CRDS compared to other surface sensitive techniques ...
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Application of continuous-wave cavity ring-down spectroscopy to laminar flames
... the ring-down events recorded are from the TEM 00 mode ...32 ring-down events were taken for each wavelength increment of the 1535 nm laser and also for the 1547 nm mea- ...individual ...
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Cavity ring-down spectroscopy sensor for detection of hydrogen chloride
... static cavity, significant intra- cavity power is built ...the cavity and the laser, though that approach is not used ...the cavity, an acousto-optic modulator is triggered to quickly ex- ...
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Cavity ring-down UV spectroscopy of the C2Σ+-X2Π electronic transition of CH
... Abstract Rotationally resolved spectra of the C 2 Σ + -X 2 Π electronic system of the CH radical were measured using cavity ring-down spectroscopy in supersonically expanding, planar ...
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Simultaneous measurement of NO and NO2 by a dual-channel cavity ring-down spectroscopy technique
... background cavity loss measurements of τ 0 when the target gases are not inside the ...The ring-down times when the sam- pled air pass through the activated carbon device were deter- mined to be ...
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Investigation of Aerosol Optical and Chemical Properties Using Humidity Controlled Cavity Ring-Down Spectroscopy
... 36 2. Materials and Methods A schematic of the experimental block diagram for measuring the optical extinction of laboratory-generated aerosol is shown in Figure 2-1. Particles were generated from aqueous solutions, ...
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Negligible influence of livestock contaminants and sampling system on ammonia measurements with cavity ring-down spectroscopy
... Photoacoustic spectroscopy (PAS) is often used to measure NH 3 concen- trations, but recent research shows interference from com- pounds typically present in livestock production and during agricultural ...of ...
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Frequency Stabilized Cavity Ring Down Spectroscopy of O₂ and CO₂ to Support Atmospheric Remote Sensing
... frequency-stabilized cavity ring-down spectrometer located at the National Institute of Standards and Technology (NIST) in Gaithersburg, ...reflective cavity ring-down mirrors ...
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High-Resolution Study of the O₂ A-Band using Frequency Stabilized Cavity Ring-Down Spectroscopy
... frequency-stabilized cavity ring-down spectroscopy (FS-CRDS) to measure lineshape parameters (line strengths, widths, pressure-induced shifts, and collisional narrowing) for the 18 ≤ J′ ≤ 32 ...
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A cavity ring down/cavity enhanced absorption device for measurement of ambient NO
... appropriate wave- lengths can be combined with the large absorption cross sec- tion of NO 3 close to 660 nm to make cavity based detection methods a powerful tool for ambient NO 3 /N 2 O 5 measure- ...
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High-precision measurements of nitrous oxide and methane in air with cavity ring-down spectroscopy at 7.6 µm
... It is worth mentioning that in the measurement results pre- sented in Figs. 7 and 8, the effect of temperature fluctuation is not eliminated, as the measurement sensitivity of CRDS experimental setup without temperature ...
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Intercomparison of two cavity ring-down spectroscopy analyzers for atmospheric 13 CO 212 CO 2measurement
... Figure 1. Schematic setup of the laboratory and ambient measure- ments of two Picarro CO 2 δ 13 C analyzers. and 148 Torr, respectively. The observed stability of tem- perature over 24 h was 45.0 ± 0.0024 and 45.0 ± ...
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A gas chromatograph for quantification of peroxycarboxylic nitric anhydrides calibrated by thermal dissociation cavity ring-down spectroscopy
... The response factors of the PAN-GC were sufficiently sta- ble between days, such that conventional calibration plots, i.e., plots of PAN-GC peak areas against 6 PN mixing ratios, could b[r] ...
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Accurate measurements of carbon monoxide in humid air using the cavity ring-down spectroscopy (CRDS) technique
... Abstract. Accurate measurements of carbon monoxide (CO) in humid air have been made using the cavity ring-down spectroscopy (CRDS) technique. The measurements of CO mole fractions are ...
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Calibrated high-precision 17 O-excess measurements using cavity ring-down spectroscopy with laser-current-tuned cavity resonance
... the cavity, and the wave- length monitor is used for feedback to the laser-frequency control electronics, thus allowing for rapid tuning to a target ...tical cavity is kept constant during the ...
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System for 13 C–CO 2andx CO 2analysis of discrete gas samples by cavity ring-down spectroscopy
... Durability of the gas-tight syringes used for sample de- livery was excellent, although regular monitoring and main- tenance was important to ensure smooth sample evacuation during the measurement process. Excessive ...
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Cavity Ring Down Spectroscopy: History, Fundamentals, and Applications. Brian LaFranchi 4/29/03 Chemistry 226
... laser cavity and the ring-down ...laser cavity quality) and the ring-down cavity (transmitted linewidth, mirror spacing, and mechanical ...absorption spectroscopy, ...
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Detection of triacetone triperoxide by thermal decomposition peroxy radical chemical amplification coupled to cavity ring-down spectroscopy
... In this paper, we describe a thermal dissociation peroxy radical chemical amplification cavity ring-down spectrometer (TD-PERCA-CRDS) for detection of TATP vapor, which was generated b[r] ...
Cavity ring-down spectroscopy sensor development for high-time-resolution measurements of gaseous elemental mercury in ambient air
... Pulsed cavity ring-down spectroscopy and other methods to measure GEM ...2.1 Cavity ring-down spectroscopy – overview of theory Pulsed cavity ...
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