Physics
Scientific paper
Jan 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980p%26ss...28...41f&link_type=abstract
Planetary and Space Science, vol. 28, Jan. 1980, p. 41-46. NSF-supported research.
Physics
6
Atmospheric Chemistry, Mars Atmosphere, Nitrogen Atoms, Atomic Recombination, Chemical Reactions, Dissociation, Electron Impact, Escape Velocity, Isotope Separation, Photodissociation, Photoionization, Quantitative Analysis, Upper Atmosphere, Mars, Nitrogen, Escape Flux, Photodissociation, Photoionization, Nitrogen/Nitrogen, Isotopic Ratios, Altitude, Production Rate, Atmosphere, Electrons, Viking Probes, Oxides, Wavelengths, Ionization, Isotopes, Dissociation, Impacts, Chemistry
Scientific paper
Quantitative calculations of the escape rate of nitrogen by photodissociation and photoionization, by photoelectron impact processes, by chemical reactions and by dissociative recombination are reported. It is shown that the predicted present escape rate of 200,000 atoms per sq. cm per second is consistent with the measured (N-15)(N-14) isotope ratio. A minumum of 4.0 x 10 to the 22nd per sq. cm per second is obtained for the initial reservoir of N2. The production rates of N(S-4) and N(D-2) atoms in the atmosphere are obtained and the altitude profile of N(D-2) is calculated.
Dalgarno Alexander
Fox Lewis J.
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