NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
The production and escape of nitrogen atoms on MarsUpdated rate coefficients and a revised ionosphere-thermosphere model are used to compute the production rates and densities of odd nitrogen species in the Martian atmosphere. Computed density profiles for N(4S), N(2D), N(2P), and NO are presented. The model NO densities are found to be about a factor of 2-3 less than those measured by the Viking 1 mass spectrometer. Revised values for the escape rates of N atoms from dissociative recombination and ionospheric reactions are also computed. Dissociative recombination is found to be comparable in importance to photodissociation at low solar activity, but it is still the most important escape mechanism for N-14 at high solar activity.
Document ID
19930046757
Document Type
Reprint (Version printed in journal)
Authors
Fox, J. L. (New York State Univ. Stony Brook, United States)
Date Acquired
August 16, 2013
Publication Date
February 25, 1993
Publication Information
Publication: Journal of Geophysical Research
Volume: 98
Issue: E2
ISSN: 0148-0227
Subject Category
LUNAR AND PLANETARY EXPLORATION
Funding Number(s)
CONTRACT_GRANT: NAGW-2958
CONTRACT_GRANT: NAGW-665
CONTRACT_GRANT: NAGW-2238
Distribution Limits
Public
Copyright
Other