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Mass-dependent and non-mass-dependent isotope effects in ozone photolysis: Resolving theory and experiments
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10.1063/1.2363984
/content/aip/journal/jcp/125/18/10.1063/1.2363984
http://aip.metastore.ingenta.com/content/aip/journal/jcp/125/18/10.1063/1.2363984

Figures

Image of FIG. 1.
FIG. 1.

Total ozone loss rate in UV photolysis experiments without using a range of lamp flux values in the model, compared with the observed loss rate in CB03 experiments.

Image of FIG. 2.
FIG. 2.

Modeled rates of ozone formation and loss over time in CB03 bulb experiments (a) in UV light without , (b) in UV light with of , and (c) in visible light. The initial ozone concentration is for (a) and (b) and is for (c). Note the difference in the and scales for (c).

Image of FIG. 3.
FIG. 3.

Triple isotope plot of ozone composition in experiments (stars) and selected model scenarios (as labeled). The experimental data points have been converted to the and scale and adjusted for differences in the initial isotopic composition (less than 3‰). A linear fit to the experimental data has a slope of 0.64, while the average slopes of the model predictions range from 0.70 to 0.92 (see Table II).

Image of FIG. 4.
FIG. 4.

Change in “slope” of the ozone fractionation as is added, comparing the experimental results of CB03 with several model scenarios (as labeled).

Image of FIG. 5.
FIG. 5.

Scenario 3AD combines isotope effects in reactions (2.2), (2.3), and (2.7a) for (a) the experiments without and (b) the experiments with . The stars are CB03 data with 10% error bars shown in (b). The sensitivity of the modeled slopes in (b) to the choice of “final” time is discussed in the text.

Image of FIG. 6.
FIG. 6.

Change in of ozone over time in the CB03 visible light experiments and in all model scenarios. The experimental data points have been adjusted for differences in the initial isotopic composition (less than 2‰), and the initial composition for all model runs was derived from the data.

Tables

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Table I.

Isotope effects in all model scenarios for the UV photolysis experiments with and without .

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Table II.

Isotope effects in all model scenarios for the visible photolysis experiments and the resulting slope of the triple isotope plot.

Generic image for table
Table III.

A comparison of all model scenarios for the UV experiments without .

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/content/aip/journal/jcp/125/18/10.1063/1.2363984
2006-11-08
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Mass-dependent and non-mass-dependent isotope effects in ozone photolysis: Resolving theory and experiments
http://aip.metastore.ingenta.com/content/aip/journal/jcp/125/18/10.1063/1.2363984
10.1063/1.2363984
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