Electron Acceleration by Microwave Radiation Inside a Rectangular Waveguide

Abstract

Electron dynamics in the fields associated with a transverse magnetic (TM) wave propagating inside a rectangular waveguide is analytically studied. The relativistic momentum and energy equations for an electron are solved, which was injected initially along the propagation direction of the microwave. Expressions of the acceleration gradient and deflection angle are obtained. In principle, it is shown that the electron can be accelerated in this condition and there is no deflection when the electron is injected from the centre of the waveguide front. However, it is found that the acceleration gradient and deflection angle depend strongly on the parameters of the microwave (intensity, frequency, etc.) and the dimensions of the waveguide.

Optimum point of acceleration of an electron inside the collisional plasma-filled elliptical waveguide

“…d 2 ζ Mohamed and Gouda 2011). Substituting the values of the field components of the mode in 2.12-2.21 into 5.7, associated with the above assumption, one can obtain dζ dδ 2 = 2π 2 e 2 E 2 0 γ k 4 e,s m 2 e c 2 (v g − v z ) 2 G 2 e,s (ξ, η)…”

“…For the sake of simplicity, it is assumed that both ζ and v z (in the case of the microwave) are slowly varying, i.e. Mohamed and Gouda 2011). Substituting the values of the field components of the mode in 2.12-2.21 into 5.7, associated with the above assumption, one can obtain dζ dδ…”

“…In addition to wakefield generation in a plasma-filled rectangular waveguide (see Aria and Malik 2008) and analytical calculations of wakefield generated by microwave pulses in a plasma-filled waveguide for electron acceleration (see Malik 2008), numerical studies on wakefield excited by Gaussian-like microwave pulse in a plasma-filled waveguide (see Aria and Malik 2009) have worked. Furthermore, the electron acceleration by microwave radiation inside a rectangular waveguide has been investigated (see Mohamed and Gouda 2011). Abdoli-Arani et al (2012) have studied the acceleration of an electron inside the circular and elliptical waveguides by microwave radiation.…”

Influence of electron–ion collisions in plasma on the electron energy gain using the TE11mode inside an elliptical waveguide

“…However, it is well known that the importance of electron accelerators is dominated by the achievable accelerating gradient. Recently many studies about particle acceleration have been performed [1][2][3][4][5][6][7][8][9][10][11][12]. The energy gain and dynamics of an electron in fields associated with a transverse magnetic (TM) electromagnetic wave propagating inside rectangular [1], cylindrical and elliptical [2,3] waveguides has been studied.…”

Electron energy gain in the transverse electric mode of a coaxial waveguide filled with plasma by microwave radiation

“…[24] Furthermore, the electron acceleration by microwave radiation inside a rectangular waveguide has been investigated. [25] It can be noted that most of the investigations, including the direct acceleration scheme, make use of short-pulse high-intensity lasers. However, it would be of significant interest to use microwaves in place of such high-intensity lasers.…”