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Measurement of the rate coefficient for collisional removal of by
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10.1063/1.2110227
/content/aip/journal/jcp/123/19/10.1063/1.2110227
http://aip.metastore.ingenta.com/content/aip/journal/jcp/123/19/10.1063/1.2110227

Figures

Image of FIG. 1.
FIG. 1.

Excitation spectra of mixture near 193 nm, following photodissociation at 266 nm. The features associated with ground-state levels , 1, and 2 are marked. Data for removal by O atoms were taken for excitation of via the and triplets of the (7, 1) band at 193.05 nm. Fluorescence from the (7, 19) band was detected by a filtered photomultiplier tube (PMT) at .

Image of FIG. 2.
FIG. 2.

LIF signal as a function of the delay time in a mixture with 94 Torr and 150 mTorr for the probe-laser on resonance with the feature at 193.05 nm (open circles) and off resonance at 193.00 nm (open triangles). The bottom curve shows the difference between the on- and off-resonance scans (closed circles). Each point is an average of 56 laser shots.

Image of FIG. 3.
FIG. 3.

number density as a function of delay time for two different mixtures ( and ). The data for the latter mixture is identical to that shown in Fig. 2. Each point is an average of 56 laser shots. The number density scale is calibrated using the signal from thermal before firing the pump laser. Open arrows indicate the predicted signal intensity after ozone photodissociation. Closed arrows indicate the range of estimated number density for thermal after relaxation. The magnitude of the estimated temperature jump is presented in Table I. The solid lines correspond to single-exponential fits that yield the decay constants.

Tables

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Table I.

Experimental results for removal rate coefficient.

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Table II.

Experimental results for relaxation, isotopic exchange, and the recombination high-pressure limit (300 K).

Generic image for table
Table III.

Comparison of relaxation by O atoms for at 300 K.

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/content/aip/journal/jcp/123/19/10.1063/1.2110227
2005-11-11
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Measurement of the rate coefficient for collisional removal of O2(XΣg−3,υ=1) by O(P3)
http://aip.metastore.ingenta.com/content/aip/journal/jcp/123/19/10.1063/1.2110227
10.1063/1.2110227
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