Farzin M Aghamir

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The dispersion characteristics of a toroidal waveguide in the presence of a plasma column are considered. The solution of the wave equation in a toroidal waveguide is presented using an analytical approximation method. In this method, the curvature of the axis of the waveguide is considered as a disturbance parameter to the straight circular cylinder(More)
An analysis of cyclotron waves in a cylindrical waveguide containing a warm plasma column is presented. In the analysis, a non linear wave equation is derived using the linearized fluid equations along with Maxwell’s equations. The general result obtained for the annular plasma column is then reduced to be used for the case where the plasma column(More)
The dispersion characteristics of electrostatic and electromagnetic modes of an electron tube, with ion channel guiding, in a cylindrical waveguide are presented. The analysis takes into account a relativistic hollow electron beam guided by an ion channel. Dispersion relations are derived and solved numerically to study the waveguide, betatron, and space(More)
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