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Determination of O_2 (a¹Δg) and O_2 (b¹Σ^+g) yields in the reaction O + ClO → Cl + O_2 : Implications for photochemistry in the atmosphere of Venus

Leu, Ming-Taun and Yung, Yuk L. (1987) Determination of O_2 (a¹Δg) and O_2 (b¹Σ^+g) yields in the reaction O + ClO → Cl + O_2 : Implications for photochemistry in the atmosphere of Venus. Geophysical Research Letters, 14 (9). pp. 949-952. ISSN 0094-8276. https://resolver.caltech.edu/CaltechAUTHORS:20140915-133858164

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Abstract

A discharge flow apparatus with chemiluminescence detector has been used to study the reaction O + ClO → Cl + O2^*, where O_2^* = O_2(a^¹Δ_g) or O_2(b^¹Σ^+g). The measured quantum yields for producing O-2(a6¹Δ-g) and O-2(b6¹Σ^+_g) in the above reaction are less than 2.5 × 10^(−2) and equal to (4.4 ± 1.1) × 10^(−4), respectively. The observed O_2(a^¹Δ_g) airglow of Venus cannot be explained in the context of standard photochemistry using our experimental results and those reported in recent literature. The possibility of an alternative source of O atoms derived from SO_2 photolysis in the mesosphere of Venus is suggested.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1029/GL014i009p00949DOIArticle
http://onlinelibrary.wiley.com/doi/10.1029/GL014i009p00949/abstractPublisherArticle
ORCID:
AuthorORCID
Yung, Yuk L.0000-0002-4263-2562
Alternate Title:Determination of O2 (a¹Δg) and O2 (b¹Σ^+g) yields in the reaction O + ClO → Cl + O2 : Implications for photochemistry in the atmosphere of Venus
Additional Information:© 1987 by the American Geophysical Union. Received April 21, 1987; revised June 11, 1987; accepted July 6, 1987. Paper number 7L6572. We thank W. A. Traub, W. B. DeMore, M. Allen, J. P. Pinto, L. W. Esposito, D. V. Michelangeli, and L. D. Travis for helpful discussions. This research was performed at the Jet Propulsion Laboratory, California Institute of Technology, under contract with NASA. YLY was supported as a guest investigator on the Pioneer-Venus Project under contract NAG 2267 to the California Institute of Technology.
Funders:
Funding AgencyGrant Number
NASANAG 2267
Issue or Number:9
Record Number:CaltechAUTHORS:20140915-133858164
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140915-133858164
Official Citation:Determination of O2 (a¹Δg) and O2 (b¹Σ^+g) yields in the reaction O + ClO → Cl + O2 : Implications for photochemistry in the atmosphere of Venus (pages 949–952) Ming-Taun Leu and Yuk L. Yung DOI: 10.1029/GL014i009p00949
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:49719
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:15 Sep 2014 21:00
Last Modified:09 Mar 2020 13:19

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