Depletion of the F2 region ionosphere and the protonosphere by the release of molecular hydrogen

Details Depletion of the F2 region ionosphere and the protonosphere by the release of molecular hydrogen Depletion of the F2 region ionosphere and the protonosphere by the release of molecular hydrogen

Aug 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975georl...2..341b&link_type=abstract

Geophysical Research Letters, vol. 2, Aug. 1975, p. 341-344.

Physics

5

F 2 Region, Gas Injection, Hydrogen, Ionospheric Ion Density, Proton Density (Concentration), Controlled Atmospheres, Depletion, Mathematical Models, Plasma Density

Scientific paper

Theoretical models have been used to investigate the effects of artificially injected H2 gas on plasma densities in the ionospheric F region and the overlying protonosphere. Owing to large reaction rates between H2 and ionospheric O(+) ions, plasma densities in both daytime and nighttime ionospheres can be greatly reduced by modest amounts of released H2 gas. One hundred kg of H2 released at 300-km altitude reduces local O(+) densities by more than three orders of magnitude and produces about a 5% depression in H(+) densities in the overlying protonosphere. These results suggest that it should be possible to conduct controlled chemical-modification experiments for investigation of many outstanding ionospheric and magnetospheric problems.

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