Physics – Atomic Physics
Scientific paper
Nov 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979georl...6..881z&link_type=abstract
Geophysical Research Letters, vol. 6, Nov. 1979, p. 881-884.
Physics
Atomic Physics
7
Atmospheric Physics, Atomic Recombination, Ion Recombination, Metastable Atoms, Oxygen Ions, Positive Ions, Quenching (Atomic Physics), Atomic Excitations, Charge Transfer, D Region, Gas Dissociation, Gas Mixtures, Oxygen Atoms, Oxygen Plasma, Oxygen Tension, Plasma Spectra, Radio Frequency Discharge, Temperature Dependence
Scientific paper
The rate coefficient for the quenching of metastable O(1S) atoms by O2 was measured as a function of temperature from 250 to 550 K. The resulting Arrhenius expression correlates well with previous laboratory work. It is suggested that the much larger value of the rate coefficient inferred from an analysis of artificial auroral experiment, Precede, may be explained by overestimation of the contribution of O(1S) production from O2(+) dissociative recombination. The possibility that O(1S) atoms are produced only by the dissociative recombination of vibrationally excited O2(+) ions is examined; such excited ions would not exist in the Precede experiment because of the rapid cooling of the ions by resonant charge transfer processes.
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