Speaker
Prof.
Alpik Mkrtchyan
(Institute of Applied Problems of Physics NAS RA)
Description
The radiation generated by a rectilinearly and uniformly moving train of fine bunches of charged particles is investigated. It is assumed that the particles cross a ball made of conductive, dielectric or composite material passing through its center. The obtained numerical results are based on the corresponding exact analytical solutions of Maxwell equations [1,2].
It is shown that there may be peaks in the emission spectrum of particles at some “specific frequencies” with the wavelengths of the order of ball radius. The values of the spectral density of radiated energy at these specific frequencies may be many times larger than the values of that quantity at adjacent frequencies. The peaks in the spectrum of radiation generated by the particles disappear if one replaces the ball by a plane-parallel plate made of the same materials, with a thickness equal to the diameter of the ball. A visual explanation of this phenomenon is given.
References
1. S.R. Arzumanyan, L.Sh. Grigoryan and A.A. Saharian, Izv. Nats. Akad. Nauk Arm., Fiz. (Engl. Transl.: J. Contemp. Phys.) 30 (1995) 99.
2. S.R. Arzumanyan, J. Phys.: Conf. Ser. 357 (2012) 012008.
Primary authors
Prof.
Alpik Mkrtchyan
(Institute of Applied Problems of Physics NAS RA)
Dr
Artak Mkrtchyan
(Institute of Applied Problems of Physics NAS RA)
Prof.
Levon Grigoryan
(Institute of Applied Problems in Physics)
Dr
Petr Aleksandrov
(National Research Center “Kurchatov Institute”)
Co-authors
Ms
Anush Sargsyan
(Institute of Applied Problems of Physics NAS RA, 25 Hr. Nersessian St.,Yerevan, Armenia)
Dr
Hrant Khachatryan
(Institute of Applied Problems in Physics)
