Spatial growth rate and field profiles of symmetric mode in a rod dielectric Čerenkov maser with a magnetized plasma column |
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Institution: | 1. Physics Department and Laser Research Institute of Shahid Beheshti University, Evin, Tehran, Iran;2. Institute for Studies in Theoretical Physics, 19395-3351 Tehran, Iran;3. Physics Department, Kashan University, Blvd. Ravand, Kashan, Iran |
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Abstract: | By numerically solving the exact dispersion equation, the dispersion relation of symmetrical TM waves propagating in a Čerenkov maser including a thin annular relativistic electron beam (TAREB), a strongly magnetized plasma column, and a dielectric rod is investigated. The effects of accelerating voltage, radii of TAREB and plasma column as well, on the frequency spectra and spatial growth-rate coefficient are presented. The axial electric field profiles during the wave amplification and the conditions under which the spatial growth rates are maximum are presented. |
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