Physics
Scientific paper
Sep 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992p%26ss...40.1197d&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 40, no. 9, p. 1197-1201.
Physics
5
D Region, Frequency Stability, Low Frequencies, Plasmas (Physics), Cyclotron Radiation, Earth Ionosphere, Ionospheric Propagation, Particle Collisions, Plasma Pinch, Radio Transmission
Scientific paper
Using a three-fluid model a linear local analysis of neutral induced low-frequency (NILF) mode instability in an inhomogeneous weakly ionized plasma in a magnetic field is carried out. It is concluded that this novel instability, electromechanical in nature, is seeded by the neutrals and is driven by electromechanical coupling through the frictional force between the plasma and neutral fluids. The condition for the onset of the instability requires a finite neutral diffusion flow. The NILF mode can provide a physical mechanism to understand the nature and cause of the observed irregularities in the D-region of the earth's ionosphere. However, its general application in any weakly ionized plasma with an ambient magnetic field is not restricted.
Das A. C.
Dwivedi C. B.
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