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Article
Reversed Cherenkov transition radiation of charge entering anisotropic medium
The electromagnetic field of a charge crossing the interface between vacuum and an electrically anisotropic dispersive medium in which reversed Cherenkov transition radiation (RCTR) is generated has been theor...
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Article
Selective screening of waveguide modes by a system of two grids with square cells
The problem of selective screening of waveguide modes with the help of a filter consisting of two metal grids with square cells is analyzed. The filter has perfect contacts at conductors’ crosses. The investig...
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Article
Using anisotropic dispersive materials for high-precision determination of the energy of charged particles
Vavilov-Cherenkov radiation (VCR) generated by a charged particle moving in a waveguide filled with an anisotropic dispersive material is considered. It is shown that, for a certain character of dispersion and...
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Article
Determining the energy of charged particles moving in a waveguide filled with an anisotropic dispersive medium
Generation of the Vavilov-Cherenkov radiation (VCR) by a charged particle moving in a waveguide filled with an anisotropic dispersive medium whose principal axis is parallel to the waveguide axis is considered...
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Article
Vavilov-Cherenkov radiation in active biresonant media
The radiation of a charged particle moving in a dispersive medium with two resonance frequencies is theoretically studied. It is shown that such a medium can amplify the generated electromagnetic waves, provid...
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Article
Radiated power of oscillators traveling in a moving medium
We consider the radiation from oscillating electric and magnetic dipoles moving with constant velocity directed parallel or antiparallel to the velocity of the surrounding medium. It is assumed that the medium...
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Article
Energy losses of dipoles traveling relative to a moving medium
We consider the radiation from nonoscillating dipoles traveling with constant velocity directed parallel or antiparallel to the velocity of a homogeneous transparent moving medium. It is assumed that the mediu...
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Article
Amplification of the radiation of a bunch of charged particles moving in a waveguide lined with an active dielectric medium
The radiation of a bunch of charged particles moving along the axis of a cylindrical waveguide lined with a resonant dispersive dielectric medium is theoretically studied. Conditions necessary for the amplific...
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Article
Energy characteristics of radiation from an oscillating dipole moving in a dielectric medium with resonant dispersion
Radiation produced by oscillations of an electric dipole moving along its dipole moment through an insulator with the resonance-type dispersion is considered. The total power of radiation and the power density...
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Article
Influence of a Dielectric on the Radiated Energy of a Charge Moving in a Vacuum Channel
We study the radiation from a charged particle moving along the axis of a vacuum channel in a dielectric with resonance frequency dispersion. In particular, it is shown that the maximum of the spectral density...
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Article
Radiation of a charge moving in a waveguide with a resonantly dispersive dielectric layer
The radiation of an ultrarelativistic point charged particle moving along the axis of a cylindrical waveguide containing a layer of resonantly dispersive dielectric medium is studied theoretically. It is shown...
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Article
Energy characteristics of radiation of oscillating dipoles moving in a nondispersive medium and a cold plasma
We consider radiation of moving oscillating electric and magnetic dipoles, whose moments are oriented along their velocity. We have derived general expressions for field components and radiation power, which a...
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Article
Radiation of a charge moving in a waveguide filled with a dielectric medium possessing resonance dispersion
The radiation of a point charged particle moving along the axis of a round waveguide filled with a dielectric medium possessing resonance dispersion is theoretically studied. It is shown that the dispersion si...
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Article
Energy Characteristics of Wave Fields Radiated from Elementary Oscillators in a Nondispersive Medium Moving with Subluminal Velocity
We study the energy characteristics of fields radiated from electric, magnetic, and toroidal dipoles in a nondispersive medium moving with velocity lower than the speed of light in this medium. The angular dep...
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Article
Features of Radiation Fields of Some Sources in a Subluminal Flow of a Nondispersive Medium
We study radiation fields of various dipole sources as well as of a source of bisphere type moving in a nondispersive medium with velocity less than the speed of light in this medium. In particular, it is show...
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Article
Diffraction of electromagnetic waves by a half-plane located in a moving cold plasma
Diffraction of plane electromagnetic waves by a conductive half-plane located in a parallel flow of cold plasma is studied. The velocity of the plasma motion and the propagation direction of the incident wave ...
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Article
Diffraction of electromagnetic waves by a half-plane which is permeable to a stream of cold plasma
Diffraction of plane electromagnetic waves by a conducting half-plane located in an orthogonal stream of cold plasma is studied. It is assumed that the half-plane has almost no mechanical effect on the particl...
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Article
Diffraction of electromagnetic waves by a nonconducting half-plane in a hot plasma
The diffraction of transverse and longitudinal plane waves by a thin nonconducting perfectly rigid half-plane in a hot plasma is examined. The general solution of the problem and asymptotic formulas for the fa...
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Article
Electromagnetic-wave diffraction by slot in faster-than-light flow of nondispersive medium
Plane-wave diffraction by a slot in an ideally conducting shield in a moving nondispersive medium is examined. The main diffraction characteristics are determined for the case of faster-than-light motion of th...
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Article
Radiation of a charge intersecting a system of thin parallel wires
