Waves in Bounded Magnetized Plasmas

Ivanov, S. T.

doi:10.1007/978-94-017-0633-9_17

Cited by 6 publications

(2 citation statements)

References 33 publications

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“…Such surface waves are classified as hybrid EH-modes and HE-modes, and these modes appear as some superposition of longitudinal and transverse waves. By analogy with [31] we classify hybrid modes depending on the magnitudes ratio between the longitudinal electric and magnetic fields components (𝑃 𝑥 and 𝑃 𝑧 components for the polar and Faraday geometries, respectively). For instance, for the polar geometry, it is supposed that the wave has the EH-type if 𝐸 𝑥 > 𝐻 𝑥 and the HE-type if 𝐻 𝑥 > 𝐸 𝑥 .…”

Section: Dispersion Features Of Bulk and Surface Polaritons For Parti...mentioning

confidence: 99%

Modal Phenomena of Surface and Bulk Polaritons in Magnetic- Semiconductor Superlattices

Tuz¹,

Fedorin²,

Fesenko³

2018

Surface Waves - New Trends and Developments

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We discuss peculiarities of bulk and surface polaritons propagating in a composite magnetic-semiconductor superlattice influenced by an external static magnetic field. Three particular configurations of magnetization, namely, the Voigt, polar, and Faraday geometries, are considered. In the long-wavelength limit, involving the effective medium theory, the proposed superlattice is described as an anisotropic uniform medium defined by the tensors of effective permittivity and effective permeability. The study is carried out in the frequency band where the characteristic resonant frequencies of underlying constitutive magnetic and semiconductor materials of the superlattice are different but closely spaced. The effects of mode crossing and anti-crossing in dispersion characteristics of both bulk and surface polaritons are revealed and explained with an assistance of the concept of Morse critical points from the catastrophe theory.

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Section: Dispersion Features Of Bulk and Surface Polaritons For Parti...mentioning

confidence: 99%

Modal Phenomena of Surface and Bulk Polaritons in Magnetic- Semiconductor Superlattices

Tuz¹,

Fedorin²,

Fesenko³

2018

Surface Waves - New Trends and Developments

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“…The dispersion properties of TG modes in homogeneous (µ = 0) collisionless (ν/ω = 0) plasma columns and their dependence on the external magnetic field (i.e. with varying e /ω) are well known [9,13,14,21]. An example is depicted in figure 1(a), shown by the broken curve, in the case of e /ω = 0.5.…”

Section: Uniform Plasmas At Low Collision Frequency and The Effects O...mentioning

confidence: 99%

Effects of plasma-density inhomogeneity and collisions and their relation to maintenance of waveguide discharges by Trivelpiece-Gould modes: II. Numerical analysis

Schlüter¹,

Shivarova²,

Tarnev³

2001

Plasma Sources Sci. Technol.

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The effects of collisions and radial inhomogeneity of the plasma density on the behaviour of the azimuthally-symmetric Trivelpiece-Gould modes (including the waveguide resonance and the wave resonance absorption at the upper hybrid frequency) are treated in this study in terms of their relation to gas-discharge production in an external magnetic field. Numerical solutions for the wave-field patterns and for the propagation properties of the waves are presented and their changes are discussed with a varying averaged plasma density, for various plasma-density profiles. First modifications due to collisions in homogeneous plasmas are presented for different values of the external magnetic field. Then, for a given magnetic field, the combined effects of collisions and Bessel-type radial profiles of the plasma density are emphasized. After which, for a given profile, the influence is discussed of varying the magnetic field. It became evident that, for low collision frequencies and a cyclotron frequency less than the wave frequency, the plasma-density profile shape has a strong impact on the results and that the wave properties, as the average density is varied for dominantly diffusive charged particle losses, are badly represented by wave properties in uniform plasmas. The behaviour discussed here should be useful in understanding the structure of diffusion-controlled discharges maintained in the fields of propagating Trivelpiece-Gould modes.

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