Measurement of the angular characteristics of transition radiation in near and far zones

Kalinin, B. N.; Naumenko, G. A.; Потылицын, А. П.; Saruev, G.A.; Сухих, Л.; Cha, V. A.

doi:10.1134/s0021364006150021

Cited by 44 publications

(30 citation statements)

References 9 publications

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“…In the case under consideration the telescope angular resolution is 2.6°. According to the paper [12], the spectral-angular characteristics of radiation detected in this scheme are in a good agreement with the radiation characteristics in the far-field region. The emitted radiation from the target was detected using DP-20M detector.…”

Section: Methodssupporting

confidence: 72%

Coherent diffraction and Cherenkov radiation of relativistic electrons from a dielectric target in the millimeter wavelength range

Bleko

Konkov

Soboleva

2015

Nuclear Instruments and Methods in Physics Research Section B:

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Section: Methodssupporting

confidence: 72%

Coherent diffraction and Cherenkov radiation of relativistic electrons from a dielectric target in the millimeter wavelength range

Bleko

Konkov

Soboleva

2015

Nuclear Instruments and Methods in Physics Research Section B:

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“…is the longitudinal form-factor of the bunch. In this experiment, 8 10 e N ∼ , therefore the bunch coherence amplifies the radiation by 8 orders of magnitude, making it easily observable. Shadowing is achieved by the reflection of the pseudo-photons by a half-plane mirror or their absorption in a half-plane screen.…”

Section: Principle Of the Experimentsmentioning

confidence: 77%

"Shadowing" of the electromagnetic field of relativistic charged particles

Naumenko¹,

Artru²,

Потылицын³

et al. 2010

J. Phys.: Conf. Ser.

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In radiation processes such as a transition radiation, diffraction radiation, etc. based on relativistic electrons passing through or near an opaque screen, the electron self-field is partly shadowed after the screen over a distance of the order of the formation length γ 2 λ. This effect has been investigated on coherent diffraction radiation (DR) by electron bunches. Absorbing and conductive half-plane screens were placed at various distances L before a standard DR source (inclined half-plane mirror). The radiation intensity was reduced when the screen was at small L and on the same side as the mirror. No reduction was observed when the screen was on the opposite side. It is worth noting that absorbing and conductive half-plane screens produce the same shadowing effect. The shadowing effect is responsible for a bound on the intensity of Smith-Purcell radiation.

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“…Therefore the most advanced method to measure a degree of circular polarization of TR in the noted range is the use of optical systems. For example, in work [18] the authors proposed to use a parabolic telescope to exclude the effect of pre-wave zone. The parabolic telescope is a system which is basically a parabolic mirror with a detector placed into the focus of a mirror.…”

Section: Discussionmentioning

confidence: 99%

Transition radiation of electrons with a nonzero orbital angular momentum

2014

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Several experimental groups have recently obtained the so called vortex electrons (electrons with orbital angular momentum (OAM) of ℓ ≤ 100h) with energies of ∼ 300 keV. The gyromagnetic ratio of such electrons becomes proportional to the OAM value, which leads to the corresponding increase of the electron magnetic moment. In this paper we investigate the transition radiation from the "charge + magnetic moment" system using the theory of classical electrodynamics. The circular polarization of optical transition radiation amounts up to ∼ 70%, which allows to use this effect for the independent measurement of the electron orbital momentum value.

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Measurement of the angular characteristics of transition radiation in near and far zones

Cited by 44 publications

References 9 publications

Coherent diffraction and Cherenkov radiation of relativistic electrons from a dielectric target in the millimeter wavelength range

Coherent diffraction and Cherenkov radiation of relativistic electrons from a dielectric target in the millimeter wavelength range

"Shadowing" of the electromagnetic field of relativistic charged particles

Transition radiation of electrons with a nonzero orbital angular momentum

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