Numerical analysis of THz radiation wave using upper hybrid wave wiggler

3rd International Conference on Communication Systems

无线电电子学

Malik, Pratibha^1 ; Sharma, Suresh C.^1 ; Panwar, Jyotsna^1 ; Sharma, Rinku^1

Department of Applied Physics, Delhi Technological University, Bawana Road, Shahbad Daulatpur, Delhi

110042, India^1

关键词: Coherent terahertz radiation;    Dispersion relations;    Nonlinear interactions;    Ponderomotive forces;    Radiation frequencies;    Relativistic electron beam;    Static magnetic fields;    Terahertz radiation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/331/1/012021/pdf
DOI  :  10.1088/1757-899X/331/1/012021

来源: IOP

【 摘 要 】

A theory for upper hybrid wave induced by relativistic electron beam in magnetized plasma emits tuneable and coherent terahertz radiation. The nonlinear interaction with REB is used to generate terahertz radiation. The enhancement in the amplitude of THz wave is also observed when pre-bunched REB is used. The ponderomotive force applied on beam electrons due to radiation wave and upper wave wiggler modifies the dispersion relation. By solving the dispersion relation, we have derived the growth rate of the radiation wave. Numerical studies indicate that by increasing the beam energy the growth rate of the radiation wave decreases, while it increases with wiggler frequency. Besides this, the growth rate of the radiation wave increases with beam density and decreases with radiation frequency and static magnetic field.