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Cavity ring-down spectroscopy with an automated control feedback system for investigating nitrate radical surface chemistry reactions
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10.1063/1.4739768
/content/aip/journal/rsi/83/8/10.1063/1.4739768
http://aip.metastore.ingenta.com/content/aip/journal/rsi/83/8/10.1063/1.4739768

Figures

Image of FIG. 1.
FIG. 1.

Flow diagram of the surface chemistry reactant air delivery and experiment system (SCRADES).

Image of FIG. 2.
FIG. 2.

Log plots of ring-down traces for τ empty (no NO3 ) and (124 ppt NO3 ) with linear fit.

Image of FIG. 3.
FIG. 3.

Drift of τ empty over a 72 h period with mean ring-down time (140.3 μs) bracketed by standard deviation (±1.6).

Image of FIG. 4.
FIG. 4.

Percent loss of NO3 between the CRDS cavity and the experiment chamber based on N2 flow through the N2O5 trap. Error bars represent the standard deviations from five separate experiments at each flow rate.

Image of FIG. 5.
FIG. 5.

Calculated ideal NO3 concentration to be measured by CRDS based on N2 flow through N2O5 trap (green). Actual NO3 concentration measured by CRDS (red). Calculated NO3 concentration in experiment chamber (blue).

Tables

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Table I.

Results of CRDS τ empty (no NO3 ) drift experiments.

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/content/aip/journal/rsi/83/8/10.1063/1.4739768
2012-08-09
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Cavity ring-down spectroscopy with an automated control feedback system for investigating nitrate radical surface chemistry reactions
http://aip.metastore.ingenta.com/content/aip/journal/rsi/83/8/10.1063/1.4739768
10.1063/1.4739768
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