NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Positive ion chemistry of the D and E regions.A comparison of ion-molecule reaction rates implied by E- and F-region chemistry and measured in the laboratory shows on the whole good agreement except that the ionospheric analysis demands stronger temperature dependences. In the daytime D region, it is claimed that the reconciliation of positive ion densities with production rates and laboratory rate constants would best be achieved if (1) ionization of O2(1 delta g) and hydration of O4(+) in competition with the reduction of O4(+) to O2(+) by O were the dominant source of hydrates between 85 and 77 km, (2) ionization of NO by solar Lyman alpha followed by hydration was the dominant source of hydrates below 77 km, and (3) for some reason, Lyman alpha did not ionize NO effectively at pressures below those prevailing at 75 km.
Document ID
19720038694
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Donahue, T. M.
(Pittsburgh, University Pittsburgh, Pa., United States)
Date Acquired
August 6, 2013
Publication Date
January 1, 1972
Subject Category
Chemistry
Accession Number
72A22360
Funding Number(s)
CONTRACT_GRANT: NSF GA-18224
CONTRACT_GRANT: NGR-39-011-113
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available