| Authors | سعید زاهدی,بهرام جزی,زینب رحمانی نوش آبادی,شیما کعب عمیر |
|---|---|
| Journal | IEEE T PLASMA SCI |
| Page number | 72 |
| Volume number | 46 |
| IF | 1.052 |
| Paper Type | Full Paper |
| Published At | 2018-01-11 |
| Journal Grade | Scientific - research |
| Journal Type | Electronic |
| Journal Country | Iran, Islamic Republic Of |
| Journal Index | ISI |
Abstract
In this paper, a novel waveguide made of a hollow long metallic cylindrical column with a transverse anisotropy dielectric rod (TADR) is studied. The dispersion relation of hybrid electromagnetic waves is obtained in this structure, and its diagram variations will be investigated. The effects of dielectric permittivity coefficients of TADR on the dispersion relation of slow waves is studied. The mechanism of wave generation and its amplification phenomena by a thin annular relativistic electron beam are investigated for hybrid modes. Also, the graphs of operating frequency and the graphs of growth rate will be presented for the waves during the electron beam injection. The computations have done for terahertz hybrid waves.
tags: Cherenkov radiation, electron beam, instability, operating frequency, slow-wave waveguide, terahertz waves, time growth rate, transverse anisotropy dielectric rod (TADR).