Theory and observation of a dynamically evolving negative ion plasma

Details Theory and observation of a dynamically evolving negative ion plasma Theory and observation of a dynamically evolving negative ion plasma

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.8273m&link_type=abstract

Journal of Geophysical Research, vol. 87, Oct. 1, 1982, p. 8273-8285.

Physics

20

F Region, Incoherent Scattering, Ionospheric Ion Density, Plasma Chemistry, Plasma Dynamics, Heavy Ions, Ion Production Rates, Ionospheric Electron Density, Ionospheric F-Scatter Propagation, Negative Ions, Oxygen Ions, Plasma Diffusion

Scientific paper

The study described here examines the full range of negative-ion chemistry in the upper ionosphere by using current reaction rate data to investigate the many chemical paths SF6-type injections might take in an F region environment. Special attention is given to the conditions required to create heavy negative ions that persist long enough to affect the dynamical properties of the F region. The ambipolar diffusion characteristics of a three-component plasma are described, and estimates are given of the incoherent scatter spectra obtained from such a plasma. Model calculations using a first-order chemical code are defined and tested in order to investigate the actual types of negative-ion plasma capable of being created under nighttime conditions.

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