Amplification of a surface electromagnetic wave by running over plasma surface ultrarelativistic electron bunch as a new scheme for generation of Teraherz radiation

2012/10/02 by S. P. Sadykova, Sadykova, S. P., A. A. Rukhadze +5
Engineering · Physics and Astronomy · #FOS: Physical sciences #Gyrotron and Vacuum Electronics Research #Laser Design and Applications #Plasma Diagnostics and Applications #Plasma Physics (physics.plasm-ph) #physics.plasm-ph

paper · pdf · doi:10.48550/arxiv.1210.0610

5 pages, 2 figures

openalex publication_date 2012/10/02 · arxiv created 2012/11/12 · arxiv updated 2012/11/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The amplification of a surface electromagnetic wave by means of ultrarelativistic monoenergetic electron bunch running over the flat plasma surface in absence of a magnetic field is studied theoretically. It is shown that when the ratio of electron bunch number density to plasma electron number density multiplied by a powered to 5 relativity factor is much higher than 1, i.e γ⁵ n_b/n_p>> 1, the saturation field of the surface electromagnetic wave induced by trapping of bunch electrons gains the magnitude: E_x=B_y≈ 0.16 (ω_p m c)/(e) ((2n_b)/(γ² n_p))^1/7 and does not approache the surface electromagnetic wave front breakdown threshold in plasma. The surface electromagnetic wave saturation energy density in plasma can exceed the electron bunch energy density. Here, we discuss the possibility of generation of superpower Teraherz radiation on a basis of such scheme.

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