Document Type

Article

Publication Date

1994

Abstract

Evidence has been advanced that the rate coefficient for the reaction N + NO → N2; + O has a small positive temperature dependence at the high temperatures (900-1500 K) that prevail in the terrestrial middle and upper thermosphere by Siskind and Rusch (1992), and at the low temperatures (100-200 K) of the Martian lower thermosphere by Fox (1993). Assuming that the rate coefficient recommended by the Jet Propulsion Laboratory evaluation (DeMore et al., 1992) is accurate at 300 K, we derive here the low temperature value of the activation energy for this reaction and thus the rate coefficient that best fits the Viking 1 measured NO densities. We find that the fit is acceptable for a rate coefficient of about 1.3 × 10−10(T/300)0.5exp(−400/T) and better for a value of about 2.5 × 10−10(T/300)0.5exp(−600/T) cm3 s−1.

Comments

Copyright © 1994 by the American Geophysical Union.

The following article appeared in the Journal of Geophysical Research: Space Physics 99(A4), and may be found at http://onlinelibrary.wiley.com/doi/10.1029/93JA03299/full

Permission to Deposit an Article in an Institutional Repository:

Adopted by Council 13 December 2009.

AGU allows authors to deposit their journal articles if the version is the final published citable version of record, the AGU copyright statement is clearly visible on the posting, and the posting is made 6 months after official publication by the AGU.

DOI

10.1029/93JA03299

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