Experiments on the nonlinear evolution of surface waves in an open plasma waveguide

Grozev, D.; Shivarova, A.; Tanev, Stoyan

doi:10.1017/s0022377800015737

Cited by 25 publications

(13 citation statements)

References 23 publications

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“…Such bounded plasma allows the propagation of various kinds of surface waves (SWs) along the interface (Trivelpiece & Gould 1959;Allis, Buchsbaum & Bers 1963;Mcbride & Kaw 1970;Vladimirov & Yu 1993;Cramer & Vladimirov 1996).The SW is one of the important phenomena in atomic spectroscopy (Hubert et al 1996), plasma diagnostics, (Shivarov, Stoychev & Russeva 1975) laser fusion and corona (Buti 1985;Aliev & Brodin 1990) as well as in various astrophysical situations such cornet tails downstream from the nucleus bounded and separated from the surrounding regions (Aroj, Rozina & Jamil 2016), white dwarf stars magnetars (Glenzer et al 2007) and the interface of a plasmon (Ritchie 1957;Trivelpiece & Gould 1959) etc. In addition, plasma surface waves (Moisan, Shivarova & Trivelpiece 1982;Grozev, Shivarova & Tanev 1991;Margot & Moisan 1993;Zhelyazkov & Atanassov 1995) were found to be in good agreement between the theoretical estimations and the available experimental data.…”

Section: Introductionsupporting

confidence: 66%

Gravitating–radiative magnetohydrodynamic surface waves

et al. 2020

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Radiative-magnetohydrodynamic (RMHD) equations along with a full set of Maxwell's equations are followed to formulate the charged surface waves at the interface of an incompressible, radiative, magnetized dusty plasma and vacuum, while assuming that the characteristic wave frequency is much smaller than the ion gyrofrequency, having an equilibrium background state. It is found that the separation of charges on the surface is followed by thermal motion, which further leads to a negative pressure gradient normal to the surface, hence the plasma–vacuum interface is under tension due to two different types of oppositely directed pressures. The dusty plasma RMHD set of equations admits a linear dispersion relation of surface Jeans instability of an incompressible dusty plasma, which exhibits a strong coupling between the electron surface charge and dust surface mass densities and we conclude that the surface densities of both electrons and dust as well as the dust inertia play major roles in the gravitational collapse of the surface of astrophysical objects such as stars, galaxies etc. Further, the growth rate of radiative surface waves is found to be function of both the temperature inhomogeneity, appearing due to thermal radiation heat flux, as well as the thermal radiation pressure. The present findings of charged surface waves may seek application at the astroscales.

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Section: Introductionsupporting

confidence: 66%

Gravitating–radiative magnetohydrodynamic surface waves

et al. 2020

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“…Tearing of the continuous wave train into wave packets (envelope soliton) is the final stage of the modulational instability, which starts from perturbations and modulations of the wave field amplitudes. Modulational instability of SWs and a tendency of their evolution into bright envelope solitons has experimentally been shown in dc discharge plasmas [330]. It has been supposed that weak cubic nonlinearity of an ionization type is in the basis of the observations.…”

Section: Modulation-type Of Instabilities Of the Dischargesmentioning

confidence: 93%

Travelling-wave-sustained discharges

Schlüter

Shivarova

2007

Physics Reports

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“…Such waves have previously been considered in connection with layered structures [9,10,12,16], open plasma wave guides [17,18], and fusion plasmas [19].…”

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confidence: 99%

“…[12] that certain layered dielectric structures give rise to peculiar reflection phenomena, provided surface waves [7,8,13,14,15] can be excited. Such waves have previously been considered in connection with layered structures [9,10,12,16], open plasma wave guides [17,18], and fusion plasmas [19].…”

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confidence: 99%

Anomalous reflection and excitation of surface waves in metamaterials

et al. 2007

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We consider reflection of electromagnetic waves from layered structures with various dielectric and magnetic properties, including metamaterials. Assuming periodic variations in the permittivity, we find that the reflection is in general anomalous. In particular, we note that the specular reflection vanishes and that the incident energy is totally reflected in the backward direction, when the conditions for resonant excitation of leaking surface waves are fulfilled. [1,2,3,4,5,6,7,8,9,10], it is necessary to reconsider many well known problems, accounting also for metamaterials. Due to their extraordinary properties, lefthanded materials are believed to become highly important in various technological applications [1,2]. The first examples of metamaterials had their left-handed properties in the microwave range, and then later for infrared waves [11]. Recently materials showing anomalous refractive behaviour have been constructed also in the optical regime [2].It has previously been shown in Ref.[12] that certain layered dielectric structures give rise to peculiar reflection phenomena, provided surface waves [7,8,13,14,15] can be excited. Such waves have previously been considered in connection with layered structures [9,10,12,16], open plasma wave guides [17,18], and fusion plasmas [19].In the present paper, we consider the reflective properties of a dielectric and magnetic medium with arbitrary permittivity and permeability, which is covered by a dielectric layer. We show that for a homogeneous medium, we have the familiar specular reflection independently of the material parameters. However, with periodic variations in the dielectric permittivity, as can be found in nature [20,21] and constructed in laboratories [1, 2, 11], we find that the incident energy can be completely converted into a backscattered energy flux, a phenomenon which is associated with the resonant excitation of leaking surface waves. The necessary conditions for obtaining backward reflection will be deduced, and possible applications of this peculiar mirror effect are consequently pointed out.Homogeneous media We first consider a semi-infinite (z > z 0 , region a) material with arbitrary relative permittivity ε a and permeability µ a . Specifically we will allow these constants to have arbitrary signs, such that for example metamaterials with negative signs of both ε and µ are included as special cases. This material is assumed to be covered by a dielectric layer with arbitrary permittivity ε b and µ b = 1 in the region 0 < z < z 0 (region b), whereas we have vacuum at z < 0. Fur-

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Experiments on the nonlinear evolution of surface waves in an open plasma waveguide

Cited by 25 publications

References 23 publications

Gravitating–radiative magnetohydrodynamic surface waves

Gravitating–radiative magnetohydrodynamic surface waves

Travelling-wave-sustained discharges

Anomalous reflection and excitation of surface waves in metamaterials

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