Title :
Three-dimensional FDTD simulation of electromagnetic wave transformation in a dynamic inhomogeneous magnetized plasma
Author :
Lee, Joo Hwa ; Kalluri, Dikshitulu K.
Author_Institution :
Electromagn. & Complex Media Res., Massachusetts Univ., Lowell, MA, USA
fDate :
7/1/1999 12:00:00 AM
Abstract :
A three-dimensional (3-D) finite-difference time domain (FDTD) algorithm is developed to study the transformation of an electromagnetic wave by a dynamic (time-varying) inhomogeneous magnetized plasma medium. The current density vector is positioned at the center of the Yee cube to accommodate the anisotropy of the plasma medium due to the presence of a static magnetic field. An appropriate time-stepping algorithm is used to obtain accurate solutions for arbitrary values of the collision frequency and the electron cyclotron frequency. The technique is illustrated by calculating the frequency shifts in a cavity due to a switched magnetoplasma medium with a time varying and space-varying electron density profile
Keywords :
current density; electron density; finite difference time-domain analysis; inhomogeneous media; plasma electromagnetic wave propagation; Yee cube; anisotropy; cavity; collision frequency; current density vector; dynamic inhomogeneous magnetized plasma; electromagnetic wave transformation; electron cyclotron frequency; electron density profile; finite-difference time domain; frequency shifts; inhomogeneous magnetized plasma medium; static magnetic field; switched magnetoplasma medium; three-dimensional FDTD simulation; time-stepping algorithm; Electromagnetic scattering; Electrons; Finite difference methods; Frequency; Magnetic anisotropy; Perpendicular magnetic anisotropy; Plasma density; Plasma simulation; Plasma waves; Time domain analysis;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
