Radiation From a Charge Circulating Inside a Waveguide With Dielectric Filling

Kotanjyan, A. S.; Saharian, A. A.

doi:10.1142/s0217732302007272

Cited by 20 publications

(19 citation statements)

References 4 publications

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“…where the coefficients D (p) m are defined by formulae (17). The case ω 0 = 0 for a fixed ρ 0 corresponds to a charge moving with constant velocity v on a straight line ρ = ρ 0 parallel to the cylinder axis.…”

Section: Spectral-angular Distribution Of the Radiation Intensitymentioning

confidence: 99%

“…This term dominates the contribution coming from other terms in Eqs. (15), (17) by the factor γ 1 . It can be seen that the radiation intensity as a function on ϑ has sharp peaks at the points ϑ = ϑ l corresponding to the zeros of the Bessel function J m (λ 0 ρ 1 ), i.e.…”

Section: Helical Undulatormentioning

confidence: 99%

“…A similar problem for the case of the cylindrical symmetry has been considered in Refs. [12,15,16,17,18]. In Ref.…”

Section: Introductionmentioning

confidence: 99%

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Synchrotron radiation from a charge moving along a helical orbit inside a dielectric cylinder

Saharian¹,

Kotanjyan²

2005

J. Phys. A: Math. Gen.

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The radiation emitted by a charged particle moving along a helical orbit inside a dielectric cylinder immersed into a homogeneous medium is investigated. Expressions are derived for the electromagnetic potentials, electric and magnetic fields, and for the spectral-angular distribution of radiation in the exterior medium. It is shown that under the Cherenkov condition for dielectric permittivity of the cylinder and the velocity of the particle image on the cylinder surface, strong narrow peaks are present in the angular distribution for the number of radiated quanta. At these peaks the radiated energy exceeds the corresponding quantity for a homogeneous medium by some orders of magnitude. The results of numerical calculations for the angular distribution of radiated quanta are presented and they are compared with the corresponding quantities for radiation in a homogeneous medium. The special case of relativistic charged particle motion along the direction of the cylinder axis with non-relativistic transverse velocity (helical undulator) is considered in detail. Various regimes for the undulator parameter are discussed. It is shown that the presence of the cylinder can increase essentially the radiation intensity.

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Section: Spectral-angular Distribution Of the Radiation Intensitymentioning

confidence: 99%

Section: Helical Undulatormentioning

confidence: 99%

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Synchrotron radiation from a charge moving along a helical orbit inside a dielectric cylinder

Saharian¹,

Kotanjyan²

2005

J. Phys. A: Math. Gen.

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“…where n ρ is the unit vector of the cylindrical surface. By making use of formulas (12), (15), and (16), we obtain…”

Section: Spectral-angular Distribution Of the Radiation Intensitymentioning

confidence: 99%

Radiation from an oscillator uniformly moving along the axis of a dielectric cylinder

Saharian

Kotanjyan

2004

Nuclear Instruments and Methods in Physics Research Section B:

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The radiation generated by a charged longitudinal oscillator moving with a constant drift velocity along the axis of a dielectric cylinder immersed in a homogeneous medium is investigated. For an arbitrary oscillation law a formula is derived for the spectral-angular distribution of this radiation. Under the Cherenkov condition for the dielectric permittivity of the external medium and oscillator drift velocity this formula contains two summands. The first one corresponds to the radiation with a continuous spectrum which propagates at the Cherenkov angle of the external medium. The second one describes the radiation which has a discrete spectrum for a given angle of propagation. The corresponding frequencies are multiples of the Doppler-shifted oscillation frequency. The results of numerical calculations for the angular distribution of the radiated quanta are presented and they are compared with the corresponding quantities for the radiation in a homogeneous medium. It is shown that the presence of the cylinder can increase essentially the radiation intensity. PACS number(s): 41.60.-m, 41.60.Bq *

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“…Wellknown examples are Cherenkov, transition, and diffraction radiations. In a series of papers [3][4][5][6][7][8][9][10][11] the synchrotron radiation is considered from a charge rotating around a dielectric ball/cylinder enclosed by a homogeneous medium. It has been shown that the superposition between the synchrotron and Cherenkov radiations leads to interesting effects: under the Cherenkov condition for the material of the ball/cylinder and the particle velocity, strong narrow peaks appear in the radiation intensity.…”

Section: Introductionmentioning

confidence: 99%

Epitaxial Growth and Magnetic Properties of Ferromagnetic Fe₃N on Si(111) by Molecular Beam Epitaxy Using AlN/3C–SiC Intermediate Layers

Yamaguchi

Yui

Ichikawa

et al. 2006

jjap

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c-Axis-oriented hexagonal Fe 3 N films were epitaxially grown on Si(111) substrates by molecular beam epitaxy using AlN/ 3C-SiC intermediate layers. It was found that the magnetic moments of Fe 3 N epitaxial film faced parallel to the film plane, and that the saturation magnetization per Fe atom was approximately 1.8 B at room temperature, where B is the Bohr magneton. The nitrogen composition in Fe x N (2 < x < 3), and thus its magnetic properties, could be controlled even after the growth by irradiation of a radical nitrogen beam.

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Radiation From a Charge Circulating Inside a Waveguide With Dielectric Filling

Cited by 20 publications

References 4 publications

Synchrotron radiation from a charge moving along a helical orbit inside a dielectric cylinder

Synchrotron radiation from a charge moving along a helical orbit inside a dielectric cylinder

Radiation from an oscillator uniformly moving along the axis of a dielectric cylinder

Epitaxial Growth and Magnetic Properties of Ferromagnetic Fe₃N on Si(111) by Molecular Beam Epitaxy Using AlN/3C–SiC Intermediate Layers

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Radiation From a Charge Circulating Inside a Waveguide With Dielectric Filling

Cited by 20 publications

References 4 publications

Synchrotron radiation from a charge moving along a helical orbit inside a dielectric cylinder

Synchrotron radiation from a charge moving along a helical orbit inside a dielectric cylinder

Radiation from an oscillator uniformly moving along the axis of a dielectric cylinder

Epitaxial Growth and Magnetic Properties of Ferromagnetic Fe3N on Si(111) by Molecular Beam Epitaxy Using AlN/3C–SiC Intermediate Layers

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Epitaxial Growth and Magnetic Properties of Ferromagnetic Fe₃N on Si(111) by Molecular Beam Epitaxy Using AlN/3C–SiC Intermediate Layers