The effect of different collision operators on EISCAT's standard data analysis model

Details The effect of different collision operators on EISCAT's standard data analysis model The effect of different collision operators on EISCAT's standard data analysis model

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jatp...55..567g&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 55, no. 4-5, p. 567-571.

Mathematics

2

Eiscat Radar System (Europe), Fokker-Planck Equation, Particle Collisions, Radar Data, Operators (Mathematics), Radar Cross Sections, Standards

Scientific paper

The Dougherty and Farley (1961) and Dougherty (1962, 1963) model (the 'standard' model) of incoherent scattering is modified for use in a case of a collisional plasma without external forces. In one analysis, the BGK collision term in its density conservative form is replaced by a BGK collision term in its density, momentum, and energy conservative form, as was done by Stubbe (1985). In a second analysis, the standard model is modified by using the generalized Fokker-Planck collision term (Hernandez, 1987) in a kinetic and hydrodynamic description. It is shown that the alternative BGK model and the Fokker-Planck model are very similar, whereas these models differ substantially from the original standard model.

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