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“Shadowing” of the electromagnetic field of relativistic charged particles

G. Naumenko X. Artru 1 A. Potylistsyn Yu. Popov L. Sukhikh M. Shevelev
1 Théorie
IP2I Lyon - Institut de Physique des 2 Infinis de Lyon
Abstract : 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 γ2λ. 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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Submitted on : Thursday, December 17, 2009 - 11:25:53 AM
Last modification on : Thursday, February 6, 2020 - 4:28:09 PM
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G. Naumenko, X. Artru, A. Potylistsyn, Yu. Popov, L. Sukhikh, et al.. “Shadowing” of the electromagnetic field of relativistic charged particles. VIII International Symposium on Radiation from Relativistic Electrons in Periodic Structures (RREPS-2009), 2009, Zvenigorod, Russia. pp.012004, ⟨10.1088/1742-6596/236/1/012004⟩. ⟨in2p3-00441754⟩

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