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A geodesic finite-difference time-domain model of magnetized plasma


Please use this identifier to cite or link to this item: http://hdl.handle.net/1928/21003

A geodesic finite-difference time-domain model of magnetized plasma

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Title: A geodesic finite-difference time-domain model of magnetized plasma
Author: Schlegel, Ryan
Advisor(s): Simpson, Jamesina
Gilmore, Mark
Committee Member(s): Graham, Edward, Jr
Lester, Luke
Department: University of New Mexico. Dept. of Electrical and Computer Engineering
Subject: geodesic
finite-difference time-domain
cold plasma
electromagnetic wave propagation
LC Subject(s): Magnetospheric radio wave propagation--Computer simulation.
Low temperature plasmas--Computer simulation.
Geodesic flows-- Computer simulation.
Time-domain analysis.
Finite differences.
Degree Level: Masters
Abstract: Electromagnetic wave propagation in the Earth-ionosphere cavity presents an interesting challenge for simulations. Three-dimensional latitude-longitude finite-difference time-domain (FDTD) models accounting for the bathymetry, topography and ionosphere have been developed and applied towards a number of applications previously. However, to date most of these models treat the ionosphere as a simple, isotropic exponential conductivity profile. Only recently has a latitude-longitude FDTD model been developed that treats the ionosphere as a magnetized cold plasma. This opens the door to modeling electromagnetic phenomena at higher frequencies and higher altitudes by accommodating more physics. Further, a geodesic (hexagonal-pentagonal) FDTD model that is more efficient, is easier to implement, and executes faster than latitude-longitude models has been recently developed. In this thesis, the magnetized cold plasma global latitude-longitude algorithm is adapted and implemented for the first time in a geodesic FDTD model of the Earth-ionosphere cavity.
Graduation Date: July 2012
URI: http://hdl.handle.net/1928/21003

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