Ar(+) in the terrestrial ionosphere

Details Ar(+) in the terrestrial ionosphere Ar(+) in the terrestrial ionosphere

Feb 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jgr....91.1731f&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 91, Feb. 1, 1986, p. 1731-1733.

Physics

2

Argon, Charge Exchange, Ionospheric Composition, Ionospheric Ion Density, Nitrogen Ions, Solar Terrestrial Interactions, Molecular Excitation, Positive Ions, Solar Activity Effects, Vibrational Spectra

Scientific paper

The Ar(+) densities in the terrestrial ionosphere are computed for both low and high solar activity models. The reaction N2(+)(v greater than 0) + Ar yields N2 + Ar(+) is found to be a significant source of Ar(+) nearly equal to photoionization and electron impact ionization in the high solar activity model. Peak densities of Ar(+) of 11 per cu cm near 190 km and 22 per cu cm near 220 km are predicted for the low and high solar activity models. It is suggested that a simultaneous measurement of Ar(+) and Ar densities would provide a test for the presence of vibrationally excited N2(+) in the terrestrial ionosphere.

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