Dispersion relation of azimuthal electromagnetic surface waves on a magnetized plasma column in a dielectric lined slow-wave waveguide

Jazi, B.; Mehdian, H.

doi:10.1088/0741-3335/46/3/006

Cited by 18 publications

(33 citation statements)

References 25 publications

(51 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…27 Therefore, the graphs of the growth rate (51) for this traveling wave tube in the presence of the annular relativistic electron beam for the zero-order Hartree harmonic (n ¼ 0) were plotted in Figs. [8][9][10]. In all of theses graphs related to the growth rate, there is a single point with a fixed operating frequency and wave number for a given configuration of the traveling wave tube.…”

Section: Non-equilibrium Tm Modesmentioning

confidence: 99%

“…2,4,5 It is obvious that the problem of electron beamplasma interaction becomes simpler if a plasma column is placed inside a cylindrical metallic waveguide of smooth walls. 1, [6][7][8][9] Furthermore, it has been found experimentally that injecting plasma into the microwave apparatus can enhance the interaction efficiency and the output power much more than the vacuum case. 10 In this way, a device filled with plasma may serve as a source of microwave radiation.…”

mentioning

confidence: 99%

See 1 more Smart Citation

The dispersion relation and excitation of transverse magnetic mode electromagnetic waves in rippled-wall waveguide with a plasma rod and an annular dielectric

Nejati¹,

Shokri²

2012

Physics of Plasmas

View full text Add to dashboard Cite

Section: Non-equilibrium Tm Modesmentioning

confidence: 99%

mentioning

confidence: 99%

The dispersion relation and excitation of transverse magnetic mode electromagnetic waves in rippled-wall waveguide with a plasma rod and an annular dielectric

Nejati¹,

Shokri²

2012

Physics of Plasmas

View full text Add to dashboard Cite

“…In Equations (14)- (17) In the mathematical analysis of the Mathieu equations, q is known as the intensity parameter [17,18]. Recall that in cross-section, the field Equations (25) and (26) and their hybrid solutions (14)- (17) are comparable with the field equations and their solutions presented in [22,23].…”

Section: Waves In Random and Complex Mediamentioning

confidence: 99%

“…These waves have been investigated previously [22][23][24][25] in long cylindrical metallic waveguides with circular cross-section. In the limit of waveguides with circular 10 B. Jazi et al…”

Section: 2mentioning

confidence: 99%

Propagation of electromagnetic waves in elliptical waveguides made of materials with anisotropic Hermitian dielectric tensors

Jazi

Abdoli-Arani

Rahmani

et al. 2010

Waves in Random and Complex Media

View full text Add to dashboard Cite

This paper studies the generalized equations of electromagnetic fields and their solutions in long waveguides with several regions made of materials with Hermitian dielectric tensors and elliptical cross-sections. The special conditions under which the quadratic homogeneous equations of the hybrid modes can be reduced to second-order equations are presented. IntroductionIt is well known that the dispersion relation of electromagnetic waves in a waveguide essentially depends on its geometrical dimensions, and the dielectric permittivity and permeability coefficients of its materials [1-3]. There are waveguides with different cross-sections, made of different materials and different configurations. Many years ago these instruments with elliptical cross-sections were used as accelerators of charged particles [4], were used for microwave heating [5], and were also used as transmission lines [6]. Recently an elliptical waveguide made of metamaterials in which the phase velocity and energy flow of an electromagnetic wave can be antiparallel has also been investigated [7]. In [4][5][6][7], it was assumed that the waveguides were made of solid materials with isotropic scaler dielectric permittivity and permeability. The propagation characteristics of ferrite-filled elliptical waveguides have been investigated as an anisotropic problem only in [8,9], where the anisotropic properties refer to the permeability tensor. Recently, ideal stability of an elliptical plasma column [10] and propagation of charge-space and slow waves in elliptical waveguides [11,12] have been investigated. Furthermore, the theory of the equilibrium and stability of a high-intensity beam and the attenuation characteristics of elliptic waveguides have been analysed in [13] and [14], respectively. In the other words, plasma waveguides with elliptical cross-section are a new application of elliptic waveguides. Generally, there are two methods for investigating wave propagation in a material. In the first method, the perturbed values of the macroscopic quantities of the system are matched with the governing fundamental electromagnetic equations of the system [15]. In the second method, the perturbed values of the microscopic

show abstract

“…6 Due to their special properties, the surface waves have already been the subject of many theoretical, experimental, and numerical researches. [7][8][9][10][11][12][13][14][15] These waves can be excited on a sufficiently dense plasma and essentially depend on the plasma properties. The surface waves propagation characteristics in dense plasmas are also affected by quantum effects.…”

mentioning

confidence: 99%

Theoretical study of the surface waves in semi-bounded quantum collisional plasmas

et al. 2012

View full text Add to dashboard Cite

The propagation of surface waves on a semi-bounded quantum plasma is investigated taking into account the collisional effects. The quantum hydrodynamic model includes Bohm's quantum force, Fermi-Dirac statistical, and collisional corrections are used to derive the dispersion relation of these waves. It is shown that the collisions play a significant role on the decay of surface wave amplitude. Furthermore, the surface waves can be unstable in the presence of collisional effects. It is also indicated that the growth rate of the surface wave instability increases with the increase of collisional and quantum effects, especially in the high wavenumber region. V C 2012 American Institute of Physics. [http://dx.

show abstract

Dispersion relation of azimuthal electromagnetic surface waves on a magnetized plasma column in a dielectric lined slow-wave waveguide

Cited by 18 publications

References 25 publications

The dispersion relation and excitation of transverse magnetic mode electromagnetic waves in rippled-wall waveguide with a plasma rod and an annular dielectric

The dispersion relation and excitation of transverse magnetic mode electromagnetic waves in rippled-wall waveguide with a plasma rod and an annular dielectric

Propagation of electromagnetic waves in elliptical waveguides made of materials with anisotropic Hermitian dielectric tensors

Theoretical study of the surface waves in semi-bounded quantum collisional plasmas

Contact Info

Product

Resources

About