Identification of deuterium ions in the ionosphere of Venus

Details Identification of deuterium ions in the ionosphere of Venus Identification of deuterium ions in the ionosphere of Venus

Oct 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983georl..10..965h&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 10, Oct. 1983, p. 965-968.

Physics

28

Atmospheric Chemistry, Deuterons, Ionospheric Ion Density, Planetary Evolution, Planetary Ionospheres, Venus Atmosphere, Abundance, Chemical Equilibrium, Hydrogen Ions, Isotopic Enrichment, Mass Spectroscopy, Pioneer Venus 1 Spacecraft, Venus, Ionosphere, Ions, Deuterium, Analysis, Abundance, Concentrations, Mass Spectrometer, Pvo, Pioneer Venus Orbiter, Turbopause, Enrichment, Chemistry, Hydrogen, Density, Mass, Regions, Calculations, Altitude

Scientific paper

The dominant mass 2 ion in the ionosphere of Venus is identified as D+ through analysis of the height variation of [mass 2 ion]/[H+] measured in the chemical equilibrium region by the ion mass spectrometer on the Pioneer Venus Orbiter. This result leads to [D]/[H] = (2.2±0.6)×10-2 at the turbopause, which agrees with the ratio measured in the lower atmosphere by the large probe mass spectrometer. The 100-fold deuterium enrichment supports previous suggestions that Venus has lost at least 0.3 percent of a terrestrial ocean.

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