Open AccessCollisional and resonance absorption of electromagnetic waves in a weakly collisional, inhomogeneous magnetoplasma slab
Author(s) -
Fuad Rawwagah,
Manal Al-Ali,
A. AlKhateeb,
M. S. Bawa’aneh
Publication year - 2020
Publication title -
advanced electromagnetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.242
H-Index - 15
ISSN - 2119-0275
DOI - 10.7716/aem.v9i2.1466
Subject(s) - collisionality , atomic physics , physics , electron cyclotron resonance , cyclotron , electromagnetic electron wave , plasma , electromagnetic radiation , magnetic field , electron , fourier transform ion cyclotron resonance , cyclotron resonance , wave propagation , computational physics , ion , optics , tokamak , quantum mechanics
Absorbance of normally incident electromagnetic wave on a cold, weakly collisional, and inhomogeneous magnetoplasma slab is investigated. The plasma density is Budden-like sinusoidal profile, where the inhomogeniety is treated as a multilayered system of homogeneous sub-cells within the transfer matrix technique. For incident wave frequencies much above the ion cyclotron frequency, only right hand circularly polarized waves are relevant for wave propagation parallel to a static magnetic field. Calculations are performed in normalized parameters, that make the results suitable for many applications including atmospheric and laboratory plasmas. The presence of the dc-magnetic field leads to the formation of two absorption bands explained by plasma collisional dissipation and electron cyclotron resonance in the low frequency branch of the $R$-wave below the electron cyclotron frequency. The transmittance shows the emergence of the low frequency electron cyclotron wave, which becomes a Whistler mode at very low frequency. More detailed discussion on the effect of plasma collisionality, inhomogeneity, and dc-magnetic field on the propagation characteristics is given at the relevant place within the body of the manuscript.