Soft-x-ray Cherenkov radiation generated by a charged particle moving near a finite-size screen

Shevelev, M.; Konkov, A. S.; Aryshev, Alexander

doi:10.1103/physreva.92.053851

Cited by 20 publications

(12 citation statements)

References 45 publications

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“…A good thermal conductivity coefficient is another property that metals tend to possess and is helpful for PSLs intended for use in high power sources. The interactions between charged particle beams and periodic structures, that can be one, two, or three dimensional provide a very fruitful research area [15,16]. Structures used to excite Smith-Purcell radiation share many of the same modeling [16], constructional and measurement challenges as the present work.…”

Section: Two Dimensional (2d) Periodic Surface Lattice (Psl)mentioning

confidence: 84%

Electron beam excitation of coherent sub-terahertz radiation in periodic structures manufactured by 3D printing

Phipps

MacLachlan

Robertson

et al. 2017

Nuclear Instruments and Methods in Physics Research Section B:

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For the creation of novel coherent sub-THz sources excited by electron beams there is a requirement to manufacture intricate periodic structures to produce and radiate electromagnetic fields. The specification and the measured performance is reported of a periodic structure constructed by additive manufacturing and used successfully in an electron beam driven sub-THz radiation source. Additive manufacturing, or “3D printing”, is promising to be quick and cost-effective for prototyping these periodic structures

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Section: Two Dimensional (2d) Periodic Surface Lattice (Psl)mentioning

confidence: 84%

Electron beam excitation of coherent sub-terahertz radiation in periodic structures manufactured by 3D printing

Phipps

MacLachlan

Robertson

et al. 2017

Nuclear Instruments and Methods in Physics Research Section B:

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“…The X-ray VC radiation from other materials was also observed [65,66]. The use of X-ray VC radiation for diagnostics of particle beams can be found in [67,68]. Notice that the angular momentum of radiated twisted photons in all the considered examples can be shifted to larger values by employing the addition rule valid for the radiation produced by helically microbunched beams of charged particles [31,33,44,69,70].…”

Section: Introductionmentioning

confidence: 94%

Generation of twisted photons by undulators filled with dispersive medium

Bogdanov,

Kazinski,

Lazarenko

2020

Preprint

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The radiation of twisted photons by undulators filled with a homogeneous dielectric dispersive medium is considered. The general formulas for the average number of radiated twisted photons are obtained. The radiation of undulators in the dipole regime and the radiation of the helical and planar wigglers are studied in detail. It is shown that the selection rules for radiation of twisted photons established for undulators in a vacuum also holds for undulators filled with a dielectric medium. In the case of a medium with plasma permittivity the lower undulator harmonics do not form. This fact can be used for generation of twisted photons with nonzero orbital angular momentum on the lowest admissible harmonic. The use of the effect of inverse radiation polarization for generation of twisted photons with larger orbital angular momentum is described. The influence of the anomalous Doppler effect on the projection of the total angular momentum of radiated twisted photons is investigated. The parameters of the undulator and the charged particles are found such that the produced radiation, in particular, the Vavilov-Cherenkov radiation, is a pure source of twisted photons with definite nonzero orbital angular momentum. The developed theory is used to describe the radiation of twisted photons by beams of electrons and protons in the undulators filled with helium. We also consider the radiation of X-ray twisted photons by electrons in the undulator filled with xenon. The parameters are chosen so as to be achievable at the present experimental facilities.

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“…Radiation of charged particles moving in presence of dielectric objects ("targets") of complicated form is of interests for various applications [1][2][3][4][5]. As an example, one can mention a new method of bunch diagnostics which requires calculation of Cherenkov radiation outside dielectric object [2].…”

Section: Introductionmentioning

confidence: 99%

Cherenkov Radiation from a Hollow Conical Targets: Off-Axis Charge Motion

Tyukhtin,

Galyamin,

Vorobev

2021

Preprint

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Cherenkov radiation (CR) generated by a charge moving through a hollow conical target made of dielectric material is analyzed. We consider two cases: the charge moves from the base of the cone to its top ("straight" cone) or from the top to the base ("inverted" cone). Unlike previous works, a nonzero shift of the charge trajectory from the symmetry axis is taken into account which leads to generation of nonsymmetrical radiation. The most interesting effect is the phenomenon of "Cherenkov spotlight" which has been reported earlier for axially symmetrical problems. This effect allows essential enhancement of the CR intensity in the far-field region by proper selection of the target's parameters and charge velocity. Here we describe the influence of charge shift on CR far-field patterns paying the main attention to the "Cherenkov spotlight" regime. Influence of variation of the charge speed on this phenomenon is also investigated.

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Soft-x-ray Cherenkov radiation generated by a charged particle moving near a finite-size screen

Cited by 20 publications

References 45 publications

Electron beam excitation of coherent sub-terahertz radiation in periodic structures manufactured by 3D printing

Electron beam excitation of coherent sub-terahertz radiation in periodic structures manufactured by 3D printing

Generation of twisted photons by undulators filled with dispersive medium

Cherenkov Radiation from a Hollow Conical Targets: Off-Axis Charge Motion

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