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Proceedings Paper

XUV Cherenkov and diffraction radiation from femtosecond electron bunch
Author(s): D. Yu. Sergeeva; A. A. Tishchenko; M. N. Strikhanov
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Paper Abstract

Absorption in the medium, i.e. an imaginary part of the dielectric permittivity, can lead to arising of Cherenkov radiation at high frequencies – X-Ray and XUV. In this paper X-Ray Diffraction radiation from a bunch of ultra-relativistic electrons moving near an absorbing target is investigated theoretically. In these conditions the Cherenkov radiation arises even when trajectories of the particles does not cross the target. The spatial distribution of the radiation usually represents the cone with the axis in forward direction with thickness proportional to the imaginary part of dielectric permittivity. In this paper it is shown that taking into account the refraction and reflection of the waves at the surface of the target leads to essential changes in spatial distribution of radiation. We give analytical description of the XUV Cherenkov and diffraction radiation from the bunch of charged particles. We show that the spatial distribution of radiation is not symmetrical in relation to the top face of the target.

Paper Details

Date Published: 12 May 2015
PDF: 13 pages
Proc. SPIE 9509, Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources, 95090R (12 May 2015); doi: 10.1117/12.2182408
Show Author Affiliations
D. Yu. Sergeeva, National Research Nuclear Univ. MEPhI (Russian Federation)
A. A. Tishchenko, National Research Nuclear Univ. MEPhI (Russian Federation)
M. N. Strikhanov, National Research Nuclear Univ. MEPhI (Russian Federation)


Published in SPIE Proceedings Vol. 9509:
Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources
Dino A. Jaroszynski, Editor(s)

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