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Armenian Journal of Physics=Ֆիզիկայի հայկական հանդես
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Angular Distribution of Intensive Radiation from a Charge Rotating Around a Conductive Ball
Ստեղծողը:
Grigoryan, L. Sh. ; Saharian, A. A. ; Mkrtchyan, A. H. ; Khachatryan, H. F. ; Grigoryan, M. L. ; Petrosyan, T. A. ; Harutyunyan, H. P.
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Electromagnetism ; Electron and ion optics ; Physics of elementary particles
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The angular distribution of the radiation from a relativistic charged particle uniformly rotating about a conductive ball in its equatorial plane is studied. The magnetic permittivity of the ball is assumed to be one. The work is based on the corresponding exact analytic solutions of Maxwell’s equations. The generalized Drude-Lorentz-Sommerfeld formula for the dielectric function of the conductive ball is used in numerical calculations. Earlier it was shown that localized and high-amplitude oscillations of the electromagnetic field can be generated at a given harmonic inside the ball at a certain (resonant) particle rotation frequency. Herewith, at large distances from the trajectory of the particle, these localized oscillations are accompanied by intense radiation at the same harmonic, which is many times more intense than the analogous radiation in the case when the ball is absent. The possibilities of using this phenomenon to develop sources of quasi-monochromatic electromagnetic radiation in the range from giga- to terahertz frequencies are discussed.