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Telecommunications and Radio Engineering
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ISSN Print: 0040-2508
ISSN Online: 1943-6009

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Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v70.i4.50
pages 353-366

TRANSITION RADIATION OF MODULATED ELECTRON BEAM TRAVERSING THE WIRE SHIELD

Yu. O. Averkov
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine
Vladimir M. Yakovenko
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkov 61085

ABSTRACT

The transition radiation of an electron beam traversing the wire shield has been investigated theoretically. The electron beam has the form of the periodical series of discrete bunches and moves along the normal to the shield. Every bunch by itself has the form of the charged-filament segment directed normal to the beam velocity. The wire shield is located in vacuum and has the form of a one-dimensional array of parallel metal wires. Two different mutual arrangements of bunches and wires, namely, the perpendicular and the parallel arrangements have been considered. The spectral energy density, the directional diagram, and the numerical estimations of the radiation power have been obtained. It has been demonstrated that the transition radiation is the series of harmonics. The harmonic frequencies are multiple of the reverse spatial period of the modulated beam. The directional diagram has maximum along the wires for the non-relativistic coherent bunches.


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