Physics
Scientific paper
Nov 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977jgr....82.5441d&link_type=abstract
Journal of Geophysical Research, vol. 82, Nov. 10, 1977, p. 5441-5451.
Physics
2
Geomagnetic Tail, Ionospheric Composition, Lunar Atmosphere, Plasma Interactions, Argon, Atmospheric Models, Earth Ionosphere, Gas Density, Hydrostatics, Magnetohydrodynamics, Neon, Plasma Density
Scientific paper
The paper presents calculations of the densities and energies of the various constituents of the lunar ionosphere during the time that the moon is in the geomagnetic tail; the surface concentrations of neon and argon are calculated from a theoretical model to be 3,900 and 1,700, respectively. It is found that a hydrostatic model of the ionospheric plasma is inadequate because the gravitational potential energy of the plasma is considerably smaller than its thermal energy. A hydrodynamic model, comparable to that used to describe the solar wind, is developed to obtain plasma densities and flow velocities as functions of altitude. The electromagnetic properties of the quiescent ionosphere are then investigated, and it is concluded that plasma effects on lunar induction can be neglected for quiescent conditions in the geomagnetic tail lobes.
Barker W. A.
Clark Michael
Daily W. D.
Dyal Palmer
Parkin Curtis W.
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