Title :
Excitation of electromagnetic waves by a current source in the inhomogeneous lossy magnetoplasma
Author :
Singh, Kalpana ; Singh, R.P.
Author_Institution :
Dept. of Astrophys., Radboud Univ., Nijmegen, Netherlands
Abstract :
The excitation of nonmonochromatic signals by source current and their longitudinal propagation in an inhomogeneous magnetoplasma is studied. Three types of excitation source current are considered for the study. The inhomogeneity of magneto-ionic medium is taken with respect to the variation in plasma density and strength of the magnetic field. The effect of interparticle collisions on the amplitude of the signal is studied. Properties of the excited signals are discussed in different frequency ranges in terms of charge per unit length of the excitation source and the distance of propagation of the signal.
Keywords :
plasma collision processes; plasma density; plasma electromagnetic wave propagation; plasma magnetohydrodynamics; plasma transport processes; current source; electromagnetic wave excitation; inhomogeneous lossy magnetoplasma; interparticle collisions; magnetic field strength; magneto-ionic medium inhomogeneity; nonmonochromatic signal excitation; plasma density; Electromagnetic propagation; Electromagnetic scattering; Frequency; Ionosphere; Laplace equations; Magnetic fields; Magnetic losses; Magnetosphere; Plasma waves; Transient response; Current source; Laplace transforms; left circularly polarized (LCP) mode; magnetoplasma; right circularly polarized (RCP) mode;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2005.860107