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Photodissociation cross sections of ClOOCl at 248.4 and 266 nm
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Image of FIG. 1.
FIG. 1.

Intensity profiles of the molecular beams showing the photo-depletion signals at . Red and black lines are the molecular beam signals before and after laser irradiation; the blue line is the difference. The laser delay time and spot size were the same for ClOOCl and .

Image of FIG. 2.
FIG. 2.

Comparison of the available absolute cross sections of ClOOCl at 248.4 nm (this work with 1 sigma error bars and Refs. 2, 10, 11, and 13 with the quoted error bars).

Image of FIG. 3.
FIG. 3.

Depletion signals of and ClOOCl at various laser fluence . The laser fluence (linear to the laser pulse energy) was homogenously attenuated by a dielectric-coated optics.

Image of FIG. 4.
FIG. 4.

Normalized molecular beam signals at different ionic masses recorded under nearly identical experimental conditions. The data at 248.4 nm and 200 K are shown. Dotted lines: laser off. Solid lines: laser on and the differences .

Image of FIG. 5.
FIG. 5.

Comparison of a few relative spectra of ClOOCl which are scaled to the measured cross section at 248.4 nm of this work. The temperatures for the data are: 195 K [Huder et al. (Ref. 12)], 193 K [Pope et al. (Ref. 8)], 223 K [McKeachie et al. (Ref. 14)], 4–6 K in a neon matrix [von Hobe et al. (Ref. 16)], 200 K (Ref. 15), and 183–245 K [Bloss et al. (Ref. 35)].


Generic image for table
Table I.

Summary of the measured photodissociation cross sections of ClOOCl at 248.4 and 266 nm.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Photodissociation cross sections of ClOOCl at 248.4 and 266 nm