The UV-visible absorption cross-sections of IONO<sub>2</sub>

The UV-visible absorption spectrum of gaseous IONO<sub>2</sub> has been measured over the wavelength range 245--415 nm using the technique of laser photolysis with time-resolved UV-visible absorption spectroscopy. IONO<sub>2</sub> was produced in situ in the gas phase by l...

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Main Authors: J. C. Mössinger, D. M. Rowley, R. A. Cox
Format: Article
Language:English
Published: Copernicus Publications 2002-01-01
Series:Atmospheric Chemistry and Physics
Online Access:http://www.atmos-chem-phys.net/2/227/2002/acp-2-227-2002.pdf
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spelling doaj-fc13b34fec5e42eca2596be251128a502020-11-25T01:59:29ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242002-01-0123227234The UV-visible absorption cross-sections of IONO<sub>2</sub>J. C. MössingerD. M. RowleyR. A. CoxThe UV-visible absorption spectrum of gaseous IONO<sub>2</sub> has been measured over the wavelength range 245--415 nm using the technique of laser photolysis with time-resolved UV-visible absorption spectroscopy. IONO<sub>2</sub> was produced in situ in the gas phase by laser flash photolysis of NO<sub>2</sub>/CF<sub>3</sub>I/N<sub>2</sub> mixtures. Post flash spectra were deconvolved to remove contributions to the observed absorption from other reactant and product species. The resulting spectrum attributed to IONO<sub>2</sub> consists of several overlapping broad absorption bands. Assuming a quantum yield of unity for IONO<sub>2</sub><sub> </sub>photolysis, model calculations show that during sunlit hours at noon, 53° N, the first order solar photolysis rate coefficient (J value) for IONO<sub>2</sub> is 4.0 x 10<sup>-2</sup> s<sup>-1</sup>.http://www.atmos-chem-phys.net/2/227/2002/acp-2-227-2002.pdf
collection DOAJ
language English
format Article
sources DOAJ
author J. C. Mössinger
D. M. Rowley
R. A. Cox
spellingShingle J. C. Mössinger
D. M. Rowley
R. A. Cox
The UV-visible absorption cross-sections of IONO<sub>2</sub>
Atmospheric Chemistry and Physics
author_facet J. C. Mössinger
D. M. Rowley
R. A. Cox
author_sort J. C. Mössinger
title The UV-visible absorption cross-sections of IONO<sub>2</sub>
title_short The UV-visible absorption cross-sections of IONO<sub>2</sub>
title_full The UV-visible absorption cross-sections of IONO<sub>2</sub>
title_fullStr The UV-visible absorption cross-sections of IONO<sub>2</sub>
title_full_unstemmed The UV-visible absorption cross-sections of IONO<sub>2</sub>
title_sort uv-visible absorption cross-sections of iono<sub>2</sub>
publisher Copernicus Publications
series Atmospheric Chemistry and Physics
issn 1680-7316
1680-7324
publishDate 2002-01-01
description The UV-visible absorption spectrum of gaseous IONO<sub>2</sub> has been measured over the wavelength range 245--415 nm using the technique of laser photolysis with time-resolved UV-visible absorption spectroscopy. IONO<sub>2</sub> was produced in situ in the gas phase by laser flash photolysis of NO<sub>2</sub>/CF<sub>3</sub>I/N<sub>2</sub> mixtures. Post flash spectra were deconvolved to remove contributions to the observed absorption from other reactant and product species. The resulting spectrum attributed to IONO<sub>2</sub> consists of several overlapping broad absorption bands. Assuming a quantum yield of unity for IONO<sub>2</sub><sub> </sub>photolysis, model calculations show that during sunlit hours at noon, 53° N, the first order solar photolysis rate coefficient (J value) for IONO<sub>2</sub> is 4.0 x 10<sup>-2</sup> s<sup>-1</sup>.
url http://www.atmos-chem-phys.net/2/227/2002/acp-2-227-2002.pdf
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