Helium ions in the mid-latitude plasmasphere

Details Helium ions in the mid-latitude plasmasphere Helium ions in the mid-latitude plasmasphere

Dec 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979p%26ss...27.1441m&link_type=abstract

Planetary and Space Science, vol. 27, Dec. 1979, p. 1441-1449.

Physics

2

Helium Ions, Midlatitude Atmosphere, Plasmasphere, Solar Terrestrial Interactions, Atmospheric Chemistry, Continuity Equation, Sunspot Cycle

Scientific paper

An initial study of the behavior of He(+) ions in the mid-latitude plasmasphere is carried out by solving the time-dependent equations of continuity and momentum. Starting with a low He(+) tube content, results are obtained for a period of 8 days. In the topside ionosphere there is an upflow of He(+) during the day and downflow at night, for the sunspot maximum conditions considered. The downflow at night differs from the behavior of H(+) for these atmospheric conditions. However, little of the He(+) produced in the daytime is lost by recombination at night; it is suggested that the supply of He(+) to the mid-latitude plasmasphere is, in effect, an escape process for neutral helium.

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